/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-industry-pattern/array_ptr_single_elem_init-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:01:25,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:01:25,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:01:25,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:01:25,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:01:25,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:01:25,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:01:25,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:01:25,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:01:25,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:01:25,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:01:25,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:01:25,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:01:25,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:01:25,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:01:25,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:01:25,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:01:25,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:01:25,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:01:25,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:01:25,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:01:25,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:01:25,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:01:25,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:01:25,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:01:25,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:01:25,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:01:25,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:01:25,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:01:25,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:01:25,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:01:25,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:01:25,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:01:25,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:01:25,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:01:25,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:01:25,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:01:25,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:01:25,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:01:25,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:01:25,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:01:25,894 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 04:01:25,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:01:25,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:01:25,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:01:25,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:01:25,935 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:01:25,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:01:25,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:01:25,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:01:25,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:01:25,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:01:25,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:01:25,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:01:25,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:01:25,937 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:01:25,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:01:25,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:01:25,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:01:25,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:01:25,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:01:25,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:01:25,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:01:25,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:01:25,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:01:25,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:01:25,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:01:25,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:01:25,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:01:25,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:01:25,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:01:25,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:01:26,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:01:26,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:01:26,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:01:26,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:01:26,368 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:01:26,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_ptr_single_elem_init-2.i [2020-10-29 04:01:26,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b67b68e/94e107f014454b3c898768bbba85f76a/FLAG2b6355f50 [2020-10-29 04:01:27,247 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:01:27,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_ptr_single_elem_init-2.i [2020-10-29 04:01:27,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b67b68e/94e107f014454b3c898768bbba85f76a/FLAG2b6355f50 [2020-10-29 04:01:27,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60b67b68e/94e107f014454b3c898768bbba85f76a [2020-10-29 04:01:27,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:01:27,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:01:27,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:01:27,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:01:27,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:01:27,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:01:27" (1/1) ... [2020-10-29 04:01:27,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fc00c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:01:27, skipping insertion in model container [2020-10-29 04:01:27,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:01:27" (1/1) ... [2020-10-29 04:01:27,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:01:27,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:01:27,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:01:27,838 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:01:27,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:01:27,883 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:01:27,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:01:27 WrapperNode [2020-10-29 04:01:27,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:01:27,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:01:27,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:01:27,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:01:27,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:01:27" (1/1) ... [2020-10-29 04:01:27,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:01:27" (1/1) ... [2020-10-29 04:01:27,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:01:27" (1/1) ... [2020-10-29 04:01:27,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:01:27" (1/1) ... [2020-10-29 04:01:27,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:01:27" (1/1) ... [2020-10-29 04:01:27,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:01:27" (1/1) ... [2020-10-29 04:01:27,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:01:27" (1/1) ... [2020-10-29 04:01:27,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:01:27,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:01:27,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:01:27,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:01:27,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:01:27" (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 04:01:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:01:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:01:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:01:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:01:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:01:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:01:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:01:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 04:01:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 04:01:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:01:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:01:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:01:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:01:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:01:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:01:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:01:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:01:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:01:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:01:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:01:28,404 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:01:28,405 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 04:01:28,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:01:28 BoogieIcfgContainer [2020-10-29 04:01:28,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:01:28,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:01:28,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:01:28,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:01:28,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:01:27" (1/3) ... [2020-10-29 04:01:28,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2a9d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:01:28, skipping insertion in model container [2020-10-29 04:01:28,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:01:27" (2/3) ... [2020-10-29 04:01:28,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2a9d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:01:28, skipping insertion in model container [2020-10-29 04:01:28,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:01:28" (3/3) ... [2020-10-29 04:01:28,465 INFO L111 eAbstractionObserver]: Analyzing ICFG array_ptr_single_elem_init-2.i [2020-10-29 04:01:28,518 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:01:28,528 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:01:28,544 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:01:28,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:01:28,582 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:01:28,582 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:01:28,582 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:01:28,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:01:28,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:01:28,583 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:01:28,583 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:01:28,604 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-29 04:01:28,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 04:01:28,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:28,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:28,614 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:28,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:28,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1680670433, now seen corresponding path program 1 times [2020-10-29 04:01:28,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:28,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670518615] [2020-10-29 04:01:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:28,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:29,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:29,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 04:01:29,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:01:29,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-29 04:01:29,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:29,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:29,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:01:29,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:01:29,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 04:01:29,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 04:01:29,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:29,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:29,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:29,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:29,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:29,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:01:29,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:29,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:29,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:29,317 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 04:01:29,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670518615] [2020-10-29 04:01:29,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:01:29,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:01:29,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690635965] [2020-10-29 04:01:29,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:01:29,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:29,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:01:29,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:01:29,365 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-10-29 04:01:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:29,567 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2020-10-29 04:01:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:01:29,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-29 04:01:29,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:29,578 INFO L225 Difference]: With dead ends: 62 [2020-10-29 04:01:29,578 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 04:01:29,582 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 04:01:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 04:01:29,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-10-29 04:01:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 04:01:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-29 04:01:29,663 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 16 [2020-10-29 04:01:29,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:29,664 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-29 04:01:29,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:01:29,664 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-29 04:01:29,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 04:01:29,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:29,667 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:29,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:01:29,668 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:29,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:29,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1691183649, now seen corresponding path program 1 times [2020-10-29 04:01:29,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:29,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4746660] [2020-10-29 04:01:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:29,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:29,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:30,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:31,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:31,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 04:01:31,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:01:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1427 [2020-10-29 04:01:31,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:31,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:31,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:01:31,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 04:01:31,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:01:31,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:31,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:31,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:31,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:31,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:31,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:01:31,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:31,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:01:31,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4746660] [2020-10-29 04:01:31,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:31,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:01:31,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890363665] [2020-10-29 04:01:31,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:01:31,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:31,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:01:31,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:01:31,221 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states. [2020-10-29 04:01:31,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:31,407 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2020-10-29 04:01:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:01:31,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-29 04:01:31,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:31,409 INFO L225 Difference]: With dead ends: 60 [2020-10-29 04:01:31,409 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 04:01:31,412 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 04:01:31,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 04:01:31,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-10-29 04:01:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 04:01:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-10-29 04:01:31,429 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2020-10-29 04:01:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:31,431 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-10-29 04:01:31,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:01:31,431 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-10-29 04:01:31,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 04:01:31,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:31,433 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:31,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:01:31,434 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:31,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:31,440 INFO L82 PathProgramCache]: Analyzing trace with hash -803454921, now seen corresponding path program 2 times [2020-10-29 04:01:31,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:31,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795323210] [2020-10-29 04:01:31,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:31,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:31,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:32,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:32,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:36,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:36,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 04:01:36,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:01:36,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 04:01:36,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:36,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:01:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:01:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:36,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:36,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:36,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:36,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:01:36,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:36,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:36,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:01:36,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795323210] [2020-10-29 04:01:36,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:36,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:01:36,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558718837] [2020-10-29 04:01:36,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:01:36,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:36,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:01:36,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:01:36,579 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 6 states. [2020-10-29 04:01:36,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:36,731 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-10-29 04:01:36,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:01:36,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-29 04:01:36,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:36,733 INFO L225 Difference]: With dead ends: 72 [2020-10-29 04:01:36,733 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 04:01:36,734 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 04:01:36,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 04:01:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-10-29 04:01:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 04:01:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2020-10-29 04:01:36,744 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 32 [2020-10-29 04:01:36,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:36,745 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2020-10-29 04:01:36,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:01:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2020-10-29 04:01:36,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 04:01:36,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:36,747 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:36,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:01:36,747 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:36,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:36,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1387868639, now seen corresponding path program 3 times [2020-10-29 04:01:36,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:36,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361765032] [2020-10-29 04:01:36,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:36,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:36,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:36,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:36,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:36,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:41,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:41,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:41,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 04:01:41,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:01:41,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:01:41,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:41,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:01:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:01:41,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:41,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:41,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:41,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:41,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:01:41,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:41,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 04:01:41,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361765032] [2020-10-29 04:01:41,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:41,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:01:41,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382698816] [2020-10-29 04:01:41,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:01:41,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:41,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:01:41,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:01:41,911 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 6 states. [2020-10-29 04:01:42,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:42,093 INFO L93 Difference]: Finished difference Result 95 states and 120 transitions. [2020-10-29 04:01:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:01:42,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-29 04:01:42,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:42,094 INFO L225 Difference]: With dead ends: 95 [2020-10-29 04:01:42,095 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 04:01:42,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:01:42,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 04:01:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-10-29 04:01:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 04:01:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-29 04:01:42,121 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 40 [2020-10-29 04:01:42,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:42,121 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-29 04:01:42,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:01:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-29 04:01:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 04:01:42,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:42,125 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:42,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:01:42,126 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:42,127 INFO L82 PathProgramCache]: Analyzing trace with hash -999429343, now seen corresponding path program 1 times [2020-10-29 04:01:42,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:42,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613928092] [2020-10-29 04:01:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:42,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:42,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:42,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:42,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 04:01:42,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:01:42,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-29 04:01:42,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:42,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:01:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 04:01:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:01:42,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:42,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:42,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:42,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:42,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:42,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:42,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:42,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:42,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 04:01:42,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613928092] [2020-10-29 04:01:42,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:42,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:01:42,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846734698] [2020-10-29 04:01:42,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:01:42,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:42,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:01:42,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:01:42,687 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 7 states. [2020-10-29 04:01:42,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:42,887 INFO L93 Difference]: Finished difference Result 94 states and 114 transitions. [2020-10-29 04:01:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:01:42,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-29 04:01:42,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:42,889 INFO L225 Difference]: With dead ends: 94 [2020-10-29 04:01:42,890 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 04:01:42,891 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 04:01:42,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 04:01:42,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-10-29 04:01:42,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 04:01:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2020-10-29 04:01:42,908 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 40 [2020-10-29 04:01:42,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:42,909 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2020-10-29 04:01:42,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:01:42,909 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2020-10-29 04:01:42,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 04:01:42,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:42,913 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:42,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:01:42,914 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:42,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:42,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1956259913, now seen corresponding path program 2 times [2020-10-29 04:01:42,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:42,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32837727] [2020-10-29 04:01:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:42,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:43,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:43,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 04:01:43,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:01:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-29 04:01:43,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:43,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:43,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:01:43,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:43,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:01:43,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:01:43,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:43,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:43,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:43,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:43,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:43,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:43,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:43,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:43,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-29 04:01:43,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32837727] [2020-10-29 04:01:43,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:43,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:01:43,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022252347] [2020-10-29 04:01:43,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:01:43,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:43,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:01:43,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:01:43,710 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand 8 states. [2020-10-29 04:01:43,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:43,903 INFO L93 Difference]: Finished difference Result 108 states and 131 transitions. [2020-10-29 04:01:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 04:01:43,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-10-29 04:01:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:43,905 INFO L225 Difference]: With dead ends: 108 [2020-10-29 04:01:43,906 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 04:01:43,906 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 04:01:43,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 04:01:43,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2020-10-29 04:01:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 04:01:43,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-10-29 04:01:43,926 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 48 [2020-10-29 04:01:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:43,926 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-10-29 04:01:43,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:01:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-10-29 04:01:43,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 04:01:43,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:43,932 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:43,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:01:43,933 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:43,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:43,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1039248287, now seen corresponding path program 3 times [2020-10-29 04:01:43,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:43,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007402097] [2020-10-29 04:01:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:43,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:43,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:44,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:44,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 04:01:44,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:01:44,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 933 [2020-10-29 04:01:44,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:44,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:44,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:01:44,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:44,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:01:44,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:44,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:44,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:44,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:44,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:44,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:44,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:01:44,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:44,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:44,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 04:01:45,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007402097] [2020-10-29 04:01:45,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:45,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:01:45,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961048841] [2020-10-29 04:01:45,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:01:45,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:45,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:01:45,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:01:45,009 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 9 states. [2020-10-29 04:01:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:45,254 INFO L93 Difference]: Finished difference Result 122 states and 148 transitions. [2020-10-29 04:01:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:01:45,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-29 04:01:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:45,256 INFO L225 Difference]: With dead ends: 122 [2020-10-29 04:01:45,256 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 04:01:45,257 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 04:01:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 04:01:45,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2020-10-29 04:01:45,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 04:01:45,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2020-10-29 04:01:45,275 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 56 [2020-10-29 04:01:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:45,276 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2020-10-29 04:01:45,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:01:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2020-10-29 04:01:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 04:01:45,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:45,283 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:45,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:01:45,284 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:45,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:45,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1111730057, now seen corresponding path program 4 times [2020-10-29 04:01:45,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:45,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955060330] [2020-10-29 04:01:45,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:45,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:45,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:46,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:46,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 04:01:46,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:01:46,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1258 [2020-10-29 04:01:46,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:46,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:01:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:01:46,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:46,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:46,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:46,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:46,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:46,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:46,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:46,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:46,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:46,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:46,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:46,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 04:01:46,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955060330] [2020-10-29 04:01:46,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:46,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:01:46,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627341743] [2020-10-29 04:01:46,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:01:46,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:46,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:01:46,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:01:46,738 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand 10 states. [2020-10-29 04:01:46,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:46,984 INFO L93 Difference]: Finished difference Result 136 states and 165 transitions. [2020-10-29 04:01:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:01:46,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-10-29 04:01:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:46,987 INFO L225 Difference]: With dead ends: 136 [2020-10-29 04:01:46,987 INFO L226 Difference]: Without dead ends: 105 [2020-10-29 04:01:46,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:01:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-29 04:01:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2020-10-29 04:01:47,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 04:01:47,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 120 transitions. [2020-10-29 04:01:47,007 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 120 transitions. Word has length 64 [2020-10-29 04:01:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:47,008 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 120 transitions. [2020-10-29 04:01:47,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:01:47,011 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 120 transitions. [2020-10-29 04:01:47,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 04:01:47,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:47,013 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:47,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:01:47,015 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:47,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:47,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2113172063, now seen corresponding path program 5 times [2020-10-29 04:01:47,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:47,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792301235] [2020-10-29 04:01:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:48,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:48,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 04:01:48,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:01:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1634 [2020-10-29 04:01:48,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:48,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:01:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 04:01:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:48,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:48,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:48,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:48,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:48,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:48,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:48,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:48,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:48,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:48,797 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-29 04:01:48,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792301235] [2020-10-29 04:01:48,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:48,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:01:48,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146588841] [2020-10-29 04:01:48,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:01:48,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:48,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:01:48,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:01:48,800 INFO L87 Difference]: Start difference. First operand 97 states and 120 transitions. Second operand 11 states. [2020-10-29 04:01:49,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:49,044 INFO L93 Difference]: Finished difference Result 150 states and 182 transitions. [2020-10-29 04:01:49,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:01:49,045 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-10-29 04:01:49,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:49,046 INFO L225 Difference]: With dead ends: 150 [2020-10-29 04:01:49,047 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 04:01:49,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:01:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 04:01:49,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 108. [2020-10-29 04:01:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-29 04:01:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 134 transitions. [2020-10-29 04:01:49,056 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 134 transitions. Word has length 72 [2020-10-29 04:01:49,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:49,056 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 134 transitions. [2020-10-29 04:01:49,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:01:49,056 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 134 transitions. [2020-10-29 04:01:49,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 04:01:49,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:49,058 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:49,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:01:49,058 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:49,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:49,059 INFO L82 PathProgramCache]: Analyzing trace with hash -945813193, now seen corresponding path program 6 times [2020-10-29 04:01:49,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:49,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128031196] [2020-10-29 04:01:49,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:49,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:49,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:51,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:51,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 04:01:51,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:01:51,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2179 [2020-10-29 04:01:51,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:51,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:01:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 04:01:51,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:51,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:51,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:51,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:51,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:51,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:01:51,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:51,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:51,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:51,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 04:01:51,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128031196] [2020-10-29 04:01:51,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:51,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:01:51,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131561099] [2020-10-29 04:01:51,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:01:51,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:51,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:01:51,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:01:51,407 INFO L87 Difference]: Start difference. First operand 108 states and 134 transitions. Second operand 12 states. [2020-10-29 04:01:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:51,673 INFO L93 Difference]: Finished difference Result 164 states and 199 transitions. [2020-10-29 04:01:51,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:01:51,673 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-29 04:01:51,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:51,675 INFO L225 Difference]: With dead ends: 164 [2020-10-29 04:01:51,675 INFO L226 Difference]: Without dead ends: 127 [2020-10-29 04:01:51,676 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 04:01:51,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-29 04:01:51,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-10-29 04:01:51,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 04:01:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 148 transitions. [2020-10-29 04:01:51,684 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 148 transitions. Word has length 80 [2020-10-29 04:01:51,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:51,684 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 148 transitions. [2020-10-29 04:01:51,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:01:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 148 transitions. [2020-10-29 04:01:51,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 04:01:51,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:51,686 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:51,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:01:51,686 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:51,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:51,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1175033569, now seen corresponding path program 7 times [2020-10-29 04:01:51,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:51,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362579757] [2020-10-29 04:01:51,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:51,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:54,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:54,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 04:01:54,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:01:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2649 [2020-10-29 04:01:54,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:54,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:01:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 04:01:54,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:54,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:54,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:54,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:54,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:54,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:54,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:54,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:54,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:01:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-29 04:01:54,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362579757] [2020-10-29 04:01:54,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:54,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:01:54,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494940373] [2020-10-29 04:01:54,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:01:54,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:54,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:01:54,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:01:54,534 INFO L87 Difference]: Start difference. First operand 119 states and 148 transitions. Second operand 13 states. [2020-10-29 04:01:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:54,854 INFO L93 Difference]: Finished difference Result 178 states and 216 transitions. [2020-10-29 04:01:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:01:54,855 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-29 04:01:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:54,856 INFO L225 Difference]: With dead ends: 178 [2020-10-29 04:01:54,856 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 04:01:54,857 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 04:01:54,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 04:01:54,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2020-10-29 04:01:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-29 04:01:54,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2020-10-29 04:01:54,863 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 88 [2020-10-29 04:01:54,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:54,863 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2020-10-29 04:01:54,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:01:54,864 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2020-10-29 04:01:54,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 04:01:54,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:54,865 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:54,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:01:54,865 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:54,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:54,866 INFO L82 PathProgramCache]: Analyzing trace with hash 485288439, now seen corresponding path program 8 times [2020-10-29 04:01:54,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:54,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360696932] [2020-10-29 04:01:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:54,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:57,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:57,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 04:01:57,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:01:57,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2955 [2020-10-29 04:01:57,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:57,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 04:01:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:01:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 04:01:57,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:58,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:58,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:58,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:58,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:58,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:01:58,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:58,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:58,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-29 04:01:58,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360696932] [2020-10-29 04:01:58,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:58,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:01:58,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141833298] [2020-10-29 04:01:58,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:01:58,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:58,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:01:58,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:01:58,047 INFO L87 Difference]: Start difference. First operand 130 states and 162 transitions. Second operand 14 states. [2020-10-29 04:01:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:58,542 INFO L93 Difference]: Finished difference Result 192 states and 233 transitions. [2020-10-29 04:01:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:01:58,543 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 96 [2020-10-29 04:01:58,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:58,545 INFO L225 Difference]: With dead ends: 192 [2020-10-29 04:01:58,546 INFO L226 Difference]: Without dead ends: 149 [2020-10-29 04:01:58,547 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 04:01:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-29 04:01:58,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2020-10-29 04:01:58,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-29 04:01:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 176 transitions. [2020-10-29 04:01:58,561 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 176 transitions. Word has length 96 [2020-10-29 04:01:58,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:58,562 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 176 transitions. [2020-10-29 04:01:58,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:01:58,562 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 176 transitions. [2020-10-29 04:01:58,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 04:01:58,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:58,564 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:01:58,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:01:58,565 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:58,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:58,566 INFO L82 PathProgramCache]: Analyzing trace with hash -2069073887, now seen corresponding path program 9 times [2020-10-29 04:01:58,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:58,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334659788] [2020-10-29 04:01:58,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:00,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:00,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 04:02:00,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:00,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1934 [2020-10-29 04:02:00,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:00,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:02:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 04:02:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:00,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:00,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:00,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:00,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:00,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:00,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:02:00,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:00,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:00,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:00,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:00,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:00,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:02:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-29 04:02:00,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334659788] [2020-10-29 04:02:00,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:00,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:02:00,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867302820] [2020-10-29 04:02:00,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:02:00,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:00,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:02:00,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:02:00,754 INFO L87 Difference]: Start difference. First operand 141 states and 176 transitions. Second operand 15 states. [2020-10-29 04:02:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:01,149 INFO L93 Difference]: Finished difference Result 206 states and 250 transitions. [2020-10-29 04:02:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:02:01,150 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 104 [2020-10-29 04:02:01,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:01,153 INFO L225 Difference]: With dead ends: 206 [2020-10-29 04:02:01,153 INFO L226 Difference]: Without dead ends: 160 [2020-10-29 04:02:01,154 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 04:02:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-29 04:02:01,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2020-10-29 04:02:01,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-29 04:02:01,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 190 transitions. [2020-10-29 04:02:01,164 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 190 transitions. Word has length 104 [2020-10-29 04:02:01,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:01,165 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 190 transitions. [2020-10-29 04:02:01,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:02:01,166 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 190 transitions. [2020-10-29 04:02:01,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 04:02:01,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:01,170 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:01,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:02:01,170 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:01,171 INFO L82 PathProgramCache]: Analyzing trace with hash -595658057, now seen corresponding path program 10 times [2020-10-29 04:02:01,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:01,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752388646] [2020-10-29 04:02:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:01,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:03,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:03,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 04:02:03,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:03,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-29 04:02:03,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:03,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:02:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 04:02:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:03,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:03,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:03,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:03,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:02:03,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:03,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:03,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:03,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:03,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-29 04:02:03,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752388646] [2020-10-29 04:02:03,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:03,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:02:03,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700318673] [2020-10-29 04:02:03,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:02:03,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:03,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:02:03,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:02:03,555 INFO L87 Difference]: Start difference. First operand 152 states and 190 transitions. Second operand 16 states. [2020-10-29 04:02:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:04,174 INFO L93 Difference]: Finished difference Result 220 states and 267 transitions. [2020-10-29 04:02:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 04:02:04,175 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 112 [2020-10-29 04:02:04,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:04,178 INFO L225 Difference]: With dead ends: 220 [2020-10-29 04:02:04,179 INFO L226 Difference]: Without dead ends: 171 [2020-10-29 04:02:04,181 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 04:02:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-29 04:02:04,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 163. [2020-10-29 04:02:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-29 04:02:04,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 204 transitions. [2020-10-29 04:02:04,194 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 204 transitions. Word has length 112 [2020-10-29 04:02:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:04,195 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 204 transitions. [2020-10-29 04:02:04,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:02:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 204 transitions. [2020-10-29 04:02:04,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 04:02:04,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:04,197 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:04,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:02:04,198 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:04,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:04,204 INFO L82 PathProgramCache]: Analyzing trace with hash 697833825, now seen corresponding path program 11 times [2020-10-29 04:02:04,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:04,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055260934] [2020-10-29 04:02:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:04,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:04,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:07,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:07,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 04:02:07,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:07,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3255 [2020-10-29 04:02:07,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:07,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:07,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:02:07,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 04:02:07,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:07,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:07,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:07,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:07,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:07,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:07,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:07,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:07,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:07,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-29 04:02:07,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055260934] [2020-10-29 04:02:07,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:07,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:02:07,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627881541] [2020-10-29 04:02:07,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:02:07,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:07,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:02:07,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:02:07,803 INFO L87 Difference]: Start difference. First operand 163 states and 204 transitions. Second operand 17 states. [2020-10-29 04:02:08,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:08,370 INFO L93 Difference]: Finished difference Result 234 states and 284 transitions. [2020-10-29 04:02:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 04:02:08,371 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 120 [2020-10-29 04:02:08,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:08,372 INFO L225 Difference]: With dead ends: 234 [2020-10-29 04:02:08,373 INFO L226 Difference]: Without dead ends: 182 [2020-10-29 04:02:08,373 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 04:02:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-29 04:02:08,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 174. [2020-10-29 04:02:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-29 04:02:08,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 218 transitions. [2020-10-29 04:02:08,382 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 218 transitions. Word has length 120 [2020-10-29 04:02:08,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:08,382 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 218 transitions. [2020-10-29 04:02:08,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:02:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 218 transitions. [2020-10-29 04:02:08,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 04:02:08,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:08,384 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:08,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:02:08,385 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:08,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:08,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1875756169, now seen corresponding path program 12 times [2020-10-29 04:02:08,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:08,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899950527] [2020-10-29 04:02:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:08,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:11,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:11,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 04:02:11,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:11,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2709 [2020-10-29 04:02:11,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:11,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 04:02:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 04:02:11,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:11,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:11,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:11,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:11,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:11,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:11,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:11,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:11,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:11,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:11,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:11,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:11,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-29 04:02:11,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899950527] [2020-10-29 04:02:11,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:11,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 04:02:11,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883509754] [2020-10-29 04:02:11,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 04:02:11,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:11,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 04:02:11,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:02:11,420 INFO L87 Difference]: Start difference. First operand 174 states and 218 transitions. Second operand 18 states. [2020-10-29 04:02:11,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:11,958 INFO L93 Difference]: Finished difference Result 248 states and 301 transitions. [2020-10-29 04:02:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 04:02:11,958 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 128 [2020-10-29 04:02:11,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:11,960 INFO L225 Difference]: With dead ends: 248 [2020-10-29 04:02:11,960 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 04:02:11,961 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 04:02:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 04:02:11,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 185. [2020-10-29 04:02:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-29 04:02:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 232 transitions. [2020-10-29 04:02:11,975 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 232 transitions. Word has length 128 [2020-10-29 04:02:11,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:11,976 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 232 transitions. [2020-10-29 04:02:11,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 04:02:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 232 transitions. [2020-10-29 04:02:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 04:02:11,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:11,977 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:11,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:02:11,978 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:11,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:11,978 INFO L82 PathProgramCache]: Analyzing trace with hash -714042719, now seen corresponding path program 13 times [2020-10-29 04:02:11,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:11,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272062850] [2020-10-29 04:02:11,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:12,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:12,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:15,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:15,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 04:02:15,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:15,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3195 [2020-10-29 04:02:15,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:15,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:15,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:02:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 04:02:15,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:15,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:15,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:15,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:15,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:15,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:02:15,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:15,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:15,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:15,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-29 04:02:15,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272062850] [2020-10-29 04:02:15,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:15,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:02:15,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960957274] [2020-10-29 04:02:15,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:02:15,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:15,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:02:15,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:02:15,524 INFO L87 Difference]: Start difference. First operand 185 states and 232 transitions. Second operand 19 states. [2020-10-29 04:02:16,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:16,026 INFO L93 Difference]: Finished difference Result 262 states and 318 transitions. [2020-10-29 04:02:16,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:02:16,027 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 136 [2020-10-29 04:02:16,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:16,030 INFO L225 Difference]: With dead ends: 262 [2020-10-29 04:02:16,030 INFO L226 Difference]: Without dead ends: 204 [2020-10-29 04:02:16,031 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 04:02:16,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-29 04:02:16,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 196. [2020-10-29 04:02:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-29 04:02:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 246 transitions. [2020-10-29 04:02:16,039 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 246 transitions. Word has length 136 [2020-10-29 04:02:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:16,040 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 246 transitions. [2020-10-29 04:02:16,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:02:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 246 transitions. [2020-10-29 04:02:16,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 04:02:16,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:16,042 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:16,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 04:02:16,042 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:16,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:16,043 INFO L82 PathProgramCache]: Analyzing trace with hash -320689097, now seen corresponding path program 14 times [2020-10-29 04:02:16,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:16,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654392059] [2020-10-29 04:02:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:16,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:19,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:19,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 04:02:19,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:19,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3869 [2020-10-29 04:02:19,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:19,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:02:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 04:02:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:20,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:20,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:20,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:20,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:20,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:20,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:20,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:20,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-29 04:02:20,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654392059] [2020-10-29 04:02:20,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:20,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 04:02:20,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706278699] [2020-10-29 04:02:20,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 04:02:20,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:20,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 04:02:20,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:02:20,295 INFO L87 Difference]: Start difference. First operand 196 states and 246 transitions. Second operand 20 states. [2020-10-29 04:02:20,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:20,821 INFO L93 Difference]: Finished difference Result 276 states and 335 transitions. [2020-10-29 04:02:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 04:02:20,822 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 144 [2020-10-29 04:02:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:20,823 INFO L225 Difference]: With dead ends: 276 [2020-10-29 04:02:20,824 INFO L226 Difference]: Without dead ends: 215 [2020-10-29 04:02:20,830 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 04:02:20,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-29 04:02:20,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2020-10-29 04:02:20,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-29 04:02:20,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 260 transitions. [2020-10-29 04:02:20,845 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 260 transitions. Word has length 144 [2020-10-29 04:02:20,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:20,846 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 260 transitions. [2020-10-29 04:02:20,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 04:02:20,846 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 260 transitions. [2020-10-29 04:02:20,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 04:02:20,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:20,848 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:20,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 04:02:20,848 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:20,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:20,849 INFO L82 PathProgramCache]: Analyzing trace with hash 500816865, now seen corresponding path program 15 times [2020-10-29 04:02:20,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:20,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159918865] [2020-10-29 04:02:20,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:20,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:21,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:25,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:25,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 04:02:25,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:25,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4438 [2020-10-29 04:02:25,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:25,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:02:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 04:02:25,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:25,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:25,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:25,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:25,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:25,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:25,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:25,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:25,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:25,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:25,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:25,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-10-29 04:02:25,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159918865] [2020-10-29 04:02:25,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:25,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:02:25,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359948738] [2020-10-29 04:02:25,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:02:25,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:25,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:02:25,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:02:25,667 INFO L87 Difference]: Start difference. First operand 207 states and 260 transitions. Second operand 21 states. [2020-10-29 04:02:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:26,272 INFO L93 Difference]: Finished difference Result 290 states and 352 transitions. [2020-10-29 04:02:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:02:26,272 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 152 [2020-10-29 04:02:26,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:26,274 INFO L225 Difference]: With dead ends: 290 [2020-10-29 04:02:26,274 INFO L226 Difference]: Without dead ends: 226 [2020-10-29 04:02:26,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:02:26,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-29 04:02:26,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 218. [2020-10-29 04:02:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-29 04:02:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 274 transitions. [2020-10-29 04:02:26,300 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 274 transitions. Word has length 152 [2020-10-29 04:02:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:26,302 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 274 transitions. [2020-10-29 04:02:26,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:02:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 274 transitions. [2020-10-29 04:02:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 04:02:26,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:26,309 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:26,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 04:02:26,309 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:26,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:26,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1838396169, now seen corresponding path program 16 times [2020-10-29 04:02:26,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:26,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823634277] [2020-10-29 04:02:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:31,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:31,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 04:02:31,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:31,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4920 [2020-10-29 04:02:31,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:31,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:02:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 04:02:31,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:31,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:31,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:31,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:31,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:31,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:02:31,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:31,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:31,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-10-29 04:02:31,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823634277] [2020-10-29 04:02:31,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:31,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 04:02:31,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004227578] [2020-10-29 04:02:31,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 04:02:31,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:31,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 04:02:31,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:02:31,671 INFO L87 Difference]: Start difference. First operand 218 states and 274 transitions. Second operand 22 states. [2020-10-29 04:02:32,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:32,312 INFO L93 Difference]: Finished difference Result 304 states and 369 transitions. [2020-10-29 04:02:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 04:02:32,313 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 160 [2020-10-29 04:02:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:32,315 INFO L225 Difference]: With dead ends: 304 [2020-10-29 04:02:32,316 INFO L226 Difference]: Without dead ends: 237 [2020-10-29 04:02:32,317 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 04:02:32,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-29 04:02:32,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 229. [2020-10-29 04:02:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-29 04:02:32,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 288 transitions. [2020-10-29 04:02:32,327 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 288 transitions. Word has length 160 [2020-10-29 04:02:32,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:32,327 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 288 transitions. [2020-10-29 04:02:32,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 04:02:32,328 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 288 transitions. [2020-10-29 04:02:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 04:02:32,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:32,329 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:32,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 04:02:32,330 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:32,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:32,330 INFO L82 PathProgramCache]: Analyzing trace with hash -847776479, now seen corresponding path program 17 times [2020-10-29 04:02:32,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:32,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576447244] [2020-10-29 04:02:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:32,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:37,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:37,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 04:02:37,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:37,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 04:02:37,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:37,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 04:02:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 04:02:37,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:37,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:37,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:37,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:37,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:37,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:02:37,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:37,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-29 04:02:37,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576447244] [2020-10-29 04:02:37,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:37,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 04:02:37,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080325180] [2020-10-29 04:02:37,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 04:02:37,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:37,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 04:02:37,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:02:37,830 INFO L87 Difference]: Start difference. First operand 229 states and 288 transitions. Second operand 23 states. [2020-10-29 04:02:38,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:38,355 INFO L93 Difference]: Finished difference Result 318 states and 386 transitions. [2020-10-29 04:02:38,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 04:02:38,355 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 168 [2020-10-29 04:02:38,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:38,358 INFO L225 Difference]: With dead ends: 318 [2020-10-29 04:02:38,358 INFO L226 Difference]: Without dead ends: 248 [2020-10-29 04:02:38,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:02:38,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-29 04:02:38,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 240. [2020-10-29 04:02:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-29 04:02:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 302 transitions. [2020-10-29 04:02:38,369 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 302 transitions. Word has length 168 [2020-10-29 04:02:38,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:38,370 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 302 transitions. [2020-10-29 04:02:38,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 04:02:38,370 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 302 transitions. [2020-10-29 04:02:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 04:02:38,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:38,371 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:38,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 04:02:38,372 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:38,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:38,372 INFO L82 PathProgramCache]: Analyzing trace with hash -877978185, now seen corresponding path program 18 times [2020-10-29 04:02:38,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:38,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021248766] [2020-10-29 04:02:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:38,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:43,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:43,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 04:02:43,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:43,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:02:43,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:43,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:43,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 04:02:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 04:02:43,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:43,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:43,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:43,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:43,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:43,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:43,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:02:43,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:43,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:43,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:43,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:43,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:43,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-10-29 04:02:43,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021248766] [2020-10-29 04:02:43,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:43,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 04:02:43,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021569656] [2020-10-29 04:02:43,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 04:02:43,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:43,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 04:02:43,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:02:43,869 INFO L87 Difference]: Start difference. First operand 240 states and 302 transitions. Second operand 24 states. [2020-10-29 04:02:44,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:44,463 INFO L93 Difference]: Finished difference Result 332 states and 403 transitions. [2020-10-29 04:02:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 04:02:44,468 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 176 [2020-10-29 04:02:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:44,470 INFO L225 Difference]: With dead ends: 332 [2020-10-29 04:02:44,470 INFO L226 Difference]: Without dead ends: 259 [2020-10-29 04:02:44,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:02:44,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-29 04:02:44,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 251. [2020-10-29 04:02:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-29 04:02:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 316 transitions. [2020-10-29 04:02:44,484 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 316 transitions. Word has length 176 [2020-10-29 04:02:44,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:44,486 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 316 transitions. [2020-10-29 04:02:44,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 04:02:44,486 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 316 transitions. [2020-10-29 04:02:44,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 04:02:44,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:44,488 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:44,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 04:02:44,489 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:44,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:44,489 INFO L82 PathProgramCache]: Analyzing trace with hash 602857057, now seen corresponding path program 19 times [2020-10-29 04:02:44,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:44,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17135377] [2020-10-29 04:02:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:44,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:49,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:49,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 04:02:49,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 04:02:49,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:49,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:49,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:02:49,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:49,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 04:02:49,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:49,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:49,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:49,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:49,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:49,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:49,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:49,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1743 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-10-29 04:02:50,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17135377] [2020-10-29 04:02:50,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:50,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 04:02:50,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963666507] [2020-10-29 04:02:50,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 04:02:50,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:50,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 04:02:50,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:02:50,022 INFO L87 Difference]: Start difference. First operand 251 states and 316 transitions. Second operand 25 states. [2020-10-29 04:02:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:50,660 INFO L93 Difference]: Finished difference Result 346 states and 420 transitions. [2020-10-29 04:02:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 04:02:50,660 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 184 [2020-10-29 04:02:50,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:50,663 INFO L225 Difference]: With dead ends: 346 [2020-10-29 04:02:50,663 INFO L226 Difference]: Without dead ends: 270 [2020-10-29 04:02:50,664 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 04:02:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-29 04:02:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 262. [2020-10-29 04:02:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-29 04:02:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 330 transitions. [2020-10-29 04:02:50,674 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 330 transitions. Word has length 184 [2020-10-29 04:02:50,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:50,675 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 330 transitions. [2020-10-29 04:02:50,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 04:02:50,675 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 330 transitions. [2020-10-29 04:02:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-29 04:02:50,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:50,676 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:50,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 04:02:50,677 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:50,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:50,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1316691575, now seen corresponding path program 20 times [2020-10-29 04:02:50,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:50,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227529623] [2020-10-29 04:02:50,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:50,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:51,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:55,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:55,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-29 04:02:55,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:55,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 04:02:55,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:55,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:55,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 04:02:55,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:02:55,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 04:02:55,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:56,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:56,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:56,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:56,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:56,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:02:56,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:56,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:56,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:56,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:56,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:56,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1914 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-10-29 04:02:56,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227529623] [2020-10-29 04:02:56,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:56,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 04:02:56,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275554362] [2020-10-29 04:02:56,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 04:02:56,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:56,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 04:02:56,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:02:56,253 INFO L87 Difference]: Start difference. First operand 262 states and 330 transitions. Second operand 26 states. [2020-10-29 04:02:56,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:56,934 INFO L93 Difference]: Finished difference Result 360 states and 437 transitions. [2020-10-29 04:02:56,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 04:02:56,934 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 192 [2020-10-29 04:02:56,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:56,937 INFO L225 Difference]: With dead ends: 360 [2020-10-29 04:02:56,937 INFO L226 Difference]: Without dead ends: 281 [2020-10-29 04:02:56,938 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 04:02:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-29 04:02:56,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 273. [2020-10-29 04:02:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-29 04:02:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 344 transitions. [2020-10-29 04:02:56,949 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 344 transitions. Word has length 192 [2020-10-29 04:02:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:56,949 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 344 transitions. [2020-10-29 04:02:56,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 04:02:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 344 transitions. [2020-10-29 04:02:56,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-29 04:02:56,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:56,951 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:56,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 04:02:56,951 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:56,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:56,952 INFO L82 PathProgramCache]: Analyzing trace with hash 367171489, now seen corresponding path program 21 times [2020-10-29 04:02:56,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:56,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985348758] [2020-10-29 04:02:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:56,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:01,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:01,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 04:03:01,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:01,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:03:01,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:01,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 04:03:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 04:03:01,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:02,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:02,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:02,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:02,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:02,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:02,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:02,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:02,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:02,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:02,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:02,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:02,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2093 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-10-29 04:03:02,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985348758] [2020-10-29 04:03:02,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:02,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 04:03:02,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911454872] [2020-10-29 04:03:02,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 04:03:02,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:02,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 04:03:02,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:03:02,632 INFO L87 Difference]: Start difference. First operand 273 states and 344 transitions. Second operand 27 states. [2020-10-29 04:03:03,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:03,326 INFO L93 Difference]: Finished difference Result 374 states and 454 transitions. [2020-10-29 04:03:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 04:03:03,326 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 200 [2020-10-29 04:03:03,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:03,328 INFO L225 Difference]: With dead ends: 374 [2020-10-29 04:03:03,328 INFO L226 Difference]: Without dead ends: 292 [2020-10-29 04:03:03,329 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 04:03:03,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-29 04:03:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 284. [2020-10-29 04:03:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-29 04:03:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 358 transitions. [2020-10-29 04:03:03,340 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 358 transitions. Word has length 200 [2020-10-29 04:03:03,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:03,341 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 358 transitions. [2020-10-29 04:03:03,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 04:03:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 358 transitions. [2020-10-29 04:03:03,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 04:03:03,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:03,342 INFO L422 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:03,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 04:03:03,343 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:03,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:03,343 INFO L82 PathProgramCache]: Analyzing trace with hash -71807177, now seen corresponding path program 22 times [2020-10-29 04:03:03,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:03,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854363735] [2020-10-29 04:03:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:08,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:08,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-29 04:03:08,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:08,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 04:03:08,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:08,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:08,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 04:03:08,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:08,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 04:03:08,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:08,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:08,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:08,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:08,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:08,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:08,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:08,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:08,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:08,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:08,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:08,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:08,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-10-29 04:03:08,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854363735] [2020-10-29 04:03:08,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:08,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 04:03:08,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487812370] [2020-10-29 04:03:08,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 04:03:08,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:08,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 04:03:08,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 04:03:08,987 INFO L87 Difference]: Start difference. First operand 284 states and 358 transitions. Second operand 28 states. [2020-10-29 04:03:09,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:09,708 INFO L93 Difference]: Finished difference Result 388 states and 471 transitions. [2020-10-29 04:03:09,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 04:03:09,708 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 208 [2020-10-29 04:03:09,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:09,710 INFO L225 Difference]: With dead ends: 388 [2020-10-29 04:03:09,710 INFO L226 Difference]: Without dead ends: 303 [2020-10-29 04:03:09,711 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 04:03:09,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-29 04:03:09,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 295. [2020-10-29 04:03:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-29 04:03:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 372 transitions. [2020-10-29 04:03:09,722 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 372 transitions. Word has length 208 [2020-10-29 04:03:09,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:09,723 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 372 transitions. [2020-10-29 04:03:09,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 04:03:09,723 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 372 transitions. [2020-10-29 04:03:09,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-29 04:03:09,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:09,724 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:09,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 04:03:09,725 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:09,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1929961247, now seen corresponding path program 23 times [2020-10-29 04:03:09,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:09,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913202005] [2020-10-29 04:03:09,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:10,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:14,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:14,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 04:03:14,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:03:14,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:14,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 04:03:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 04:03:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:15,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:15,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:15,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:15,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:15,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:15,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:15,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:15,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:15,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-10-29 04:03:15,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913202005] [2020-10-29 04:03:15,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:15,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 04:03:15,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565853796] [2020-10-29 04:03:15,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 04:03:15,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:15,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 04:03:15,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 04:03:15,467 INFO L87 Difference]: Start difference. First operand 295 states and 372 transitions. Second operand 29 states. [2020-10-29 04:03:16,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:16,244 INFO L93 Difference]: Finished difference Result 402 states and 488 transitions. [2020-10-29 04:03:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 04:03:16,245 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 216 [2020-10-29 04:03:16,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:16,247 INFO L225 Difference]: With dead ends: 402 [2020-10-29 04:03:16,247 INFO L226 Difference]: Without dead ends: 314 [2020-10-29 04:03:16,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 04:03:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-29 04:03:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 306. [2020-10-29 04:03:16,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-29 04:03:16,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 386 transitions. [2020-10-29 04:03:16,260 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 386 transitions. Word has length 216 [2020-10-29 04:03:16,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:16,260 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 386 transitions. [2020-10-29 04:03:16,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 04:03:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 386 transitions. [2020-10-29 04:03:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 04:03:16,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:16,263 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:16,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 04:03:16,263 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:16,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:16,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1623281673, now seen corresponding path program 24 times [2020-10-29 04:03:16,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:16,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503643845] [2020-10-29 04:03:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:16,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:17,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:21,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:21,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 04:03:21,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:03:21,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:21,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 04:03:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 04:03:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:22,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:22,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:22,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:22,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:22,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:22,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:03:22,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:22,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:22,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:22,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:22,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:22,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-10-29 04:03:22,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503643845] [2020-10-29 04:03:22,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:22,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 04:03:22,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093629615] [2020-10-29 04:03:22,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 04:03:22,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:22,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 04:03:22,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 04:03:22,073 INFO L87 Difference]: Start difference. First operand 306 states and 386 transitions. Second operand 30 states. [2020-10-29 04:03:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:22,942 INFO L93 Difference]: Finished difference Result 416 states and 505 transitions. [2020-10-29 04:03:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 04:03:22,943 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 224 [2020-10-29 04:03:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:22,945 INFO L225 Difference]: With dead ends: 416 [2020-10-29 04:03:22,945 INFO L226 Difference]: Without dead ends: 325 [2020-10-29 04:03:22,947 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 04:03:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-29 04:03:22,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 317. [2020-10-29 04:03:22,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-29 04:03:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 400 transitions. [2020-10-29 04:03:22,959 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 400 transitions. Word has length 224 [2020-10-29 04:03:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:22,959 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 400 transitions. [2020-10-29 04:03:22,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 04:03:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 400 transitions. [2020-10-29 04:03:22,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 04:03:22,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:22,962 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:22,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 04:03:22,962 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:22,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:22,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1479509471, now seen corresponding path program 25 times [2020-10-29 04:03:22,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:22,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170342606] [2020-10-29 04:03:22,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:23,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:28,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:28,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-29 04:03:28,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:28,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:03:28,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:28,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 04:03:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 04:03:28,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:28,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:28,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:28,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:28,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:28,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:28,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:28,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:28,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:28,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2889 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-10-29 04:03:28,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170342606] [2020-10-29 04:03:28,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:28,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 04:03:28,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564274903] [2020-10-29 04:03:28,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 04:03:28,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:28,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 04:03:28,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 04:03:28,759 INFO L87 Difference]: Start difference. First operand 317 states and 400 transitions. Second operand 31 states. [2020-10-29 04:03:29,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:29,535 INFO L93 Difference]: Finished difference Result 430 states and 522 transitions. [2020-10-29 04:03:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 04:03:29,537 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 232 [2020-10-29 04:03:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:29,540 INFO L225 Difference]: With dead ends: 430 [2020-10-29 04:03:29,541 INFO L226 Difference]: Without dead ends: 336 [2020-10-29 04:03:29,542 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 04:03:29,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-29 04:03:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 328. [2020-10-29 04:03:29,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-29 04:03:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 414 transitions. [2020-10-29 04:03:29,558 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 414 transitions. Word has length 232 [2020-10-29 04:03:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:29,558 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 414 transitions. [2020-10-29 04:03:29,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 04:03:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 414 transitions. [2020-10-29 04:03:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-29 04:03:29,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:29,561 INFO L422 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:29,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 04:03:29,562 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:29,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:29,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1343602505, now seen corresponding path program 26 times [2020-10-29 04:03:29,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:29,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467609310] [2020-10-29 04:03:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:29,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:34,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:34,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 04:03:34,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:34,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 04:03:34,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:34,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 04:03:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 04:03:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:35,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:35,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:35,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:35,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:35,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:35,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:35,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:35,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:35,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:35,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3108 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-10-29 04:03:35,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467609310] [2020-10-29 04:03:35,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:35,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 04:03:35,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113738082] [2020-10-29 04:03:35,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 04:03:35,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:35,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 04:03:35,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 04:03:35,406 INFO L87 Difference]: Start difference. First operand 328 states and 414 transitions. Second operand 32 states. [2020-10-29 04:03:36,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:36,224 INFO L93 Difference]: Finished difference Result 444 states and 539 transitions. [2020-10-29 04:03:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 04:03:36,225 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 240 [2020-10-29 04:03:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:36,229 INFO L225 Difference]: With dead ends: 444 [2020-10-29 04:03:36,229 INFO L226 Difference]: Without dead ends: 347 [2020-10-29 04:03:36,230 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 04:03:36,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-29 04:03:36,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 339. [2020-10-29 04:03:36,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-29 04:03:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 428 transitions. [2020-10-29 04:03:36,242 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 428 transitions. Word has length 240 [2020-10-29 04:03:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:36,247 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 428 transitions. [2020-10-29 04:03:36,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 04:03:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 428 transitions. [2020-10-29 04:03:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 04:03:36,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:36,250 INFO L422 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:36,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 04:03:36,251 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:36,251 INFO L82 PathProgramCache]: Analyzing trace with hash -99441823, now seen corresponding path program 27 times [2020-10-29 04:03:36,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:36,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089464231] [2020-10-29 04:03:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:36,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:36,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:41,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:41,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-29 04:03:41,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:41,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 04:03:41,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:41,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:41,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 04:03:41,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:41,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-29 04:03:41,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:42,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:42,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:42,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:42,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:42,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:42,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:42,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3335 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-10-29 04:03:42,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089464231] [2020-10-29 04:03:42,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:42,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 04:03:42,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201833226] [2020-10-29 04:03:42,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 04:03:42,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:42,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 04:03:42,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 04:03:42,153 INFO L87 Difference]: Start difference. First operand 339 states and 428 transitions. Second operand 33 states. [2020-10-29 04:03:43,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:43,102 INFO L93 Difference]: Finished difference Result 458 states and 556 transitions. [2020-10-29 04:03:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 04:03:43,102 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 248 [2020-10-29 04:03:43,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:43,105 INFO L225 Difference]: With dead ends: 458 [2020-10-29 04:03:43,105 INFO L226 Difference]: Without dead ends: 358 [2020-10-29 04:03:43,106 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 04:03:43,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-29 04:03:43,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 350. [2020-10-29 04:03:43,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-29 04:03:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 442 transitions. [2020-10-29 04:03:43,118 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 442 transitions. Word has length 248 [2020-10-29 04:03:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:43,119 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 442 transitions. [2020-10-29 04:03:43,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 04:03:43,119 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 442 transitions. [2020-10-29 04:03:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 04:03:43,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:43,121 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:43,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 04:03:43,122 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:43,122 INFO L82 PathProgramCache]: Analyzing trace with hash 261554551, now seen corresponding path program 28 times [2020-10-29 04:03:43,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:43,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434336173] [2020-10-29 04:03:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:43,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:44,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:48,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:48,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-29 04:03:48,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 04:03:48,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:48,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 04:03:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 04:03:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:48,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:48,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:48,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:48,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:48,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:48,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:48,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:48,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:48,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:48,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:48,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-10-29 04:03:49,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434336173] [2020-10-29 04:03:49,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:49,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 04:03:49,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764268556] [2020-10-29 04:03:49,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 04:03:49,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:49,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 04:03:49,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 04:03:49,047 INFO L87 Difference]: Start difference. First operand 350 states and 442 transitions. Second operand 34 states. [2020-10-29 04:03:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:50,067 INFO L93 Difference]: Finished difference Result 472 states and 573 transitions. [2020-10-29 04:03:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 04:03:50,068 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 256 [2020-10-29 04:03:50,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:50,072 INFO L225 Difference]: With dead ends: 472 [2020-10-29 04:03:50,072 INFO L226 Difference]: Without dead ends: 369 [2020-10-29 04:03:50,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 04:03:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-29 04:03:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 361. [2020-10-29 04:03:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-29 04:03:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 456 transitions. [2020-10-29 04:03:50,090 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 456 transitions. Word has length 256 [2020-10-29 04:03:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:50,091 INFO L481 AbstractCegarLoop]: Abstraction has 361 states and 456 transitions. [2020-10-29 04:03:50,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 04:03:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 456 transitions. [2020-10-29 04:03:50,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-29 04:03:50,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:50,093 INFO L422 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:50,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 04:03:50,093 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:50,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:50,094 INFO L82 PathProgramCache]: Analyzing trace with hash -866018143, now seen corresponding path program 29 times [2020-10-29 04:03:50,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:50,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749755725] [2020-10-29 04:03:50,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:50,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:50,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:55,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:55,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 04:03:55,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:55,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 04:03:55,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:55,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:55,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 04:03:55,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:55,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 04:03:55,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:56,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:56,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:56,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:56,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:56,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:56,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:56,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:56,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:03:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3813 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-10-29 04:03:56,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749755725] [2020-10-29 04:03:56,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:56,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 04:03:56,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379091183] [2020-10-29 04:03:56,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 04:03:56,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:56,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 04:03:56,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 04:03:56,121 INFO L87 Difference]: Start difference. First operand 361 states and 456 transitions. Second operand 35 states. [2020-10-29 04:03:57,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:57,175 INFO L93 Difference]: Finished difference Result 486 states and 590 transitions. [2020-10-29 04:03:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 04:03:57,176 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 264 [2020-10-29 04:03:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:57,179 INFO L225 Difference]: With dead ends: 486 [2020-10-29 04:03:57,180 INFO L226 Difference]: Without dead ends: 380 [2020-10-29 04:03:57,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 04:03:57,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-29 04:03:57,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 372. [2020-10-29 04:03:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-29 04:03:57,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 470 transitions. [2020-10-29 04:03:57,192 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 470 transitions. Word has length 264 [2020-10-29 04:03:57,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:57,193 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 470 transitions. [2020-10-29 04:03:57,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 04:03:57,193 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 470 transitions. [2020-10-29 04:03:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-29 04:03:57,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:57,195 INFO L422 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:57,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 04:03:57,196 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:57,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:57,196 INFO L82 PathProgramCache]: Analyzing trace with hash -887033289, now seen corresponding path program 30 times [2020-10-29 04:03:57,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:57,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099349732] [2020-10-29 04:03:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:57,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:57,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:02,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:02,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-29 04:04:02,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:02,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:04:02,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:02,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 04:04:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:04:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 04:04:02,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:03,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:03,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:03,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:03,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:04:03,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:03,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4064 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-10-29 04:04:03,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099349732] [2020-10-29 04:04:03,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:03,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 04:04:03,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259538639] [2020-10-29 04:04:03,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 04:04:03,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:03,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 04:04:03,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 04:04:03,313 INFO L87 Difference]: Start difference. First operand 372 states and 470 transitions. Second operand 36 states. [2020-10-29 04:04:04,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:04,414 INFO L93 Difference]: Finished difference Result 500 states and 607 transitions. [2020-10-29 04:04:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 04:04:04,415 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 272 [2020-10-29 04:04:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:04,418 INFO L225 Difference]: With dead ends: 500 [2020-10-29 04:04:04,418 INFO L226 Difference]: Without dead ends: 391 [2020-10-29 04:04:04,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 04:04:04,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-29 04:04:04,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 383. [2020-10-29 04:04:04,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-10-29 04:04:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 484 transitions. [2020-10-29 04:04:04,431 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 484 transitions. Word has length 272 [2020-10-29 04:04:04,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:04,432 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 484 transitions. [2020-10-29 04:04:04,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 04:04:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 484 transitions. [2020-10-29 04:04:04,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-29 04:04:04,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:04,434 INFO L422 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:04:04,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 04:04:04,435 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:04,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:04,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1549886945, now seen corresponding path program 31 times [2020-10-29 04:04:04,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:04,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175677974] [2020-10-29 04:04:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:04,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:05,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:09,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:09,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-29 04:04:09,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:09,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 04:04:09,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:09,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 04:04:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:04:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 04:04:09,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:10,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:10,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:10,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:10,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:10,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:04:10,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:10,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:10,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:10,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:10,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:10,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4323 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-10-29 04:04:10,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175677974] [2020-10-29 04:04:10,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:10,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 04:04:10,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044817782] [2020-10-29 04:04:10,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 04:04:10,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:10,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 04:04:10,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 04:04:10,593 INFO L87 Difference]: Start difference. First operand 383 states and 484 transitions. Second operand 37 states. [2020-10-29 04:04:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:11,607 INFO L93 Difference]: Finished difference Result 514 states and 624 transitions. [2020-10-29 04:04:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 04:04:11,608 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 280 [2020-10-29 04:04:11,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:11,611 INFO L225 Difference]: With dead ends: 514 [2020-10-29 04:04:11,611 INFO L226 Difference]: Without dead ends: 402 [2020-10-29 04:04:11,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 04:04:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-29 04:04:11,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 394. [2020-10-29 04:04:11,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-29 04:04:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 498 transitions. [2020-10-29 04:04:11,624 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 498 transitions. Word has length 280 [2020-10-29 04:04:11,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:11,625 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 498 transitions. [2020-10-29 04:04:11,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 04:04:11,625 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 498 transitions. [2020-10-29 04:04:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-29 04:04:11,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:11,627 INFO L422 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:04:11,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 04:04:11,628 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:11,628 INFO L82 PathProgramCache]: Analyzing trace with hash -630975753, now seen corresponding path program 32 times [2020-10-29 04:04:11,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:11,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407337912] [2020-10-29 04:04:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:11,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:16,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:16,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-29 04:04:16,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:16,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 04:04:16,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:16,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 04:04:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:04:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 04:04:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:17,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:17,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:17,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:17,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:17,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:17,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:04:17,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:17,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:17,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4590 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-10-29 04:04:17,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407337912] [2020-10-29 04:04:17,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:17,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 04:04:17,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662969517] [2020-10-29 04:04:17,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 04:04:17,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:17,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 04:04:17,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 04:04:17,862 INFO L87 Difference]: Start difference. First operand 394 states and 498 transitions. Second operand 38 states. [2020-10-29 04:04:18,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:18,948 INFO L93 Difference]: Finished difference Result 528 states and 641 transitions. [2020-10-29 04:04:18,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 04:04:18,949 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 288 [2020-10-29 04:04:18,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:18,952 INFO L225 Difference]: With dead ends: 528 [2020-10-29 04:04:18,952 INFO L226 Difference]: Without dead ends: 413 [2020-10-29 04:04:18,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 04:04:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-10-29 04:04:18,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 405. [2020-10-29 04:04:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-10-29 04:04:18,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 512 transitions. [2020-10-29 04:04:18,969 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 512 transitions. Word has length 288 [2020-10-29 04:04:18,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:18,970 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 512 transitions. [2020-10-29 04:04:18,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 04:04:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 512 transitions. [2020-10-29 04:04:18,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-29 04:04:18,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:18,973 INFO L422 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:04:18,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 04:04:18,974 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:18,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:18,975 INFO L82 PathProgramCache]: Analyzing trace with hash 481689377, now seen corresponding path program 33 times [2020-10-29 04:04:18,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:18,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164684316] [2020-10-29 04:04:18,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:19,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:19,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:24,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:24,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-29 04:04:24,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:24,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 04:04:24,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:24,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 04:04:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:04:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 04:04:24,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:25,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:25,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:25,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:25,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:25,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:25,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:04:25,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:25,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:25,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4865 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-10-29 04:04:25,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164684316] [2020-10-29 04:04:25,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:25,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 04:04:25,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524625111] [2020-10-29 04:04:25,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 04:04:25,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:25,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 04:04:25,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 04:04:25,279 INFO L87 Difference]: Start difference. First operand 405 states and 512 transitions. Second operand 39 states. [2020-10-29 04:04:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:26,503 INFO L93 Difference]: Finished difference Result 542 states and 658 transitions. [2020-10-29 04:04:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 04:04:26,504 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 296 [2020-10-29 04:04:26,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:26,507 INFO L225 Difference]: With dead ends: 542 [2020-10-29 04:04:26,508 INFO L226 Difference]: Without dead ends: 424 [2020-10-29 04:04:26,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 04:04:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-29 04:04:26,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 416. [2020-10-29 04:04:26,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-29 04:04:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 526 transitions. [2020-10-29 04:04:26,521 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 526 transitions. Word has length 296 [2020-10-29 04:04:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:26,522 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 526 transitions. [2020-10-29 04:04:26,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 04:04:26,522 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 526 transitions. [2020-10-29 04:04:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-29 04:04:26,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:26,524 INFO L422 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:04:26,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 04:04:26,525 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:26,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:26,525 INFO L82 PathProgramCache]: Analyzing trace with hash -532913225, now seen corresponding path program 34 times [2020-10-29 04:04:26,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:26,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791002877] [2020-10-29 04:04:26,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:26,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:31,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:31,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-29 04:04:31,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:31,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 04:04:31,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:31,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:31,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 04:04:31,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:04:31,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 04:04:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:32,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:32,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:32,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:32,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:04:32,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:32,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:32,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5148 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-10-29 04:04:32,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791002877] [2020-10-29 04:04:32,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:32,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 04:04:32,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364788491] [2020-10-29 04:04:32,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 04:04:32,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:32,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 04:04:32,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 04:04:32,867 INFO L87 Difference]: Start difference. First operand 416 states and 526 transitions. Second operand 40 states. [2020-10-29 04:04:34,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:34,047 INFO L93 Difference]: Finished difference Result 556 states and 675 transitions. [2020-10-29 04:04:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 04:04:34,049 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 304 [2020-10-29 04:04:34,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:34,052 INFO L225 Difference]: With dead ends: 556 [2020-10-29 04:04:34,053 INFO L226 Difference]: Without dead ends: 435 [2020-10-29 04:04:34,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 04:04:34,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-29 04:04:34,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 427. [2020-10-29 04:04:34,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-10-29 04:04:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 540 transitions. [2020-10-29 04:04:34,091 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 540 transitions. Word has length 304 [2020-10-29 04:04:34,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:34,092 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 540 transitions. [2020-10-29 04:04:34,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 04:04:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 540 transitions. [2020-10-29 04:04:34,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-29 04:04:34,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:34,095 INFO L422 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:04:34,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 04:04:34,096 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:34,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:34,096 INFO L82 PathProgramCache]: Analyzing trace with hash -184326047, now seen corresponding path program 35 times [2020-10-29 04:04:34,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:34,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788045836] [2020-10-29 04:04:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:34,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:35,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:39,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:39,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-29 04:04:39,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:39,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 04:04:39,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:39,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 04:04:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:04:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 04:04:39,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:40,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:40,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:40,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:40,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:40,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:04:40,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:40,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-10-29 04:04:40,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788045836] [2020-10-29 04:04:40,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:40,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 04:04:40,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515666277] [2020-10-29 04:04:40,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 04:04:40,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:40,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 04:04:40,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 04:04:40,532 INFO L87 Difference]: Start difference. First operand 427 states and 540 transitions. Second operand 41 states. [2020-10-29 04:04:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:41,958 INFO L93 Difference]: Finished difference Result 570 states and 692 transitions. [2020-10-29 04:04:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 04:04:41,959 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 312 [2020-10-29 04:04:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:41,962 INFO L225 Difference]: With dead ends: 570 [2020-10-29 04:04:41,962 INFO L226 Difference]: Without dead ends: 446 [2020-10-29 04:04:41,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 04:04:41,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-10-29 04:04:41,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 438. [2020-10-29 04:04:41,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-10-29 04:04:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 554 transitions. [2020-10-29 04:04:41,974 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 554 transitions. Word has length 312 [2020-10-29 04:04:41,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:41,975 INFO L481 AbstractCegarLoop]: Abstraction has 438 states and 554 transitions. [2020-10-29 04:04:41,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 04:04:41,975 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 554 transitions. [2020-10-29 04:04:41,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-29 04:04:41,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:41,978 INFO L422 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:04:41,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 04:04:41,979 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:41,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:41,979 INFO L82 PathProgramCache]: Analyzing trace with hash -360323977, now seen corresponding path program 36 times [2020-10-29 04:04:41,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:41,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714645122] [2020-10-29 04:04:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:42,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:47,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:47,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-29 04:04:47,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:47,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 04:04:47,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:47,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:47,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 04:04:47,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:04:47,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-29 04:04:47,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:48,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:48,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:48,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:48,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:04:48,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:48,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 5738 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-10-29 04:04:48,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714645122] [2020-10-29 04:04:48,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:48,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 04:04:48,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731620203] [2020-10-29 04:04:48,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 04:04:48,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:48,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 04:04:48,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 04:04:48,497 INFO L87 Difference]: Start difference. First operand 438 states and 554 transitions. Second operand 42 states. [2020-10-29 04:04:49,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:49,831 INFO L93 Difference]: Finished difference Result 584 states and 709 transitions. [2020-10-29 04:04:49,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 04:04:49,832 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 320 [2020-10-29 04:04:49,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:49,835 INFO L225 Difference]: With dead ends: 584 [2020-10-29 04:04:49,835 INFO L226 Difference]: Without dead ends: 457 [2020-10-29 04:04:49,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 04:04:49,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-29 04:04:49,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 449. [2020-10-29 04:04:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-10-29 04:04:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 568 transitions. [2020-10-29 04:04:49,849 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 568 transitions. Word has length 320 [2020-10-29 04:04:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:49,850 INFO L481 AbstractCegarLoop]: Abstraction has 449 states and 568 transitions. [2020-10-29 04:04:49,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 04:04:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 568 transitions. [2020-10-29 04:04:49,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-29 04:04:49,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:49,853 INFO L422 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:04:49,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 04:04:49,853 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:49,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:49,854 INFO L82 PathProgramCache]: Analyzing trace with hash -2115133023, now seen corresponding path program 37 times [2020-10-29 04:04:49,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:49,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131754125] [2020-10-29 04:04:49,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:49,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:51,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:54,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:54,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-29 04:04:54,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 04:04:54,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:54,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:54,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 04:04:54,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:04:54,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 04:04:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:56,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:56,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:56,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:56,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:56,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:04:56,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:56,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:56,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6045 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2020-10-29 04:04:56,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131754125] [2020-10-29 04:04:56,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:56,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-29 04:04:56,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543467198] [2020-10-29 04:04:56,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-29 04:04:56,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:56,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-29 04:04:56,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 04:04:56,462 INFO L87 Difference]: Start difference. First operand 449 states and 568 transitions. Second operand 43 states. [2020-10-29 04:04:57,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:57,987 INFO L93 Difference]: Finished difference Result 598 states and 726 transitions. [2020-10-29 04:04:57,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 04:04:57,988 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 328 [2020-10-29 04:04:57,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:57,992 INFO L225 Difference]: With dead ends: 598 [2020-10-29 04:04:57,992 INFO L226 Difference]: Without dead ends: 468 [2020-10-29 04:04:57,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 04:04:57,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-10-29 04:04:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 460. [2020-10-29 04:04:58,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-29 04:04:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 582 transitions. [2020-10-29 04:04:58,003 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 582 transitions. Word has length 328 [2020-10-29 04:04:58,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:58,003 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 582 transitions. [2020-10-29 04:04:58,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-29 04:04:58,003 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 582 transitions. [2020-10-29 04:04:58,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-29 04:04:58,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:58,007 INFO L422 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:04:58,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 04:04:58,007 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:58,008 INFO L82 PathProgramCache]: Analyzing trace with hash 840734007, now seen corresponding path program 38 times [2020-10-29 04:04:58,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:58,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19542472] [2020-10-29 04:04:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:58,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:58,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:03,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:03,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-29 04:05:03,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:05:03,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 04:05:03,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:03,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 04:05:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:05:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-29 04:05:03,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:04,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:05:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:04,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:04,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:04,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:05:04,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:04,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:05:04,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:04,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:04,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:04,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:05:04,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:04,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6360 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-10-29 04:05:04,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19542472] [2020-10-29 04:05:04,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:05:04,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 04:05:04,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486953339] [2020-10-29 04:05:04,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 04:05:04,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:05:04,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 04:05:04,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 04:05:04,639 INFO L87 Difference]: Start difference. First operand 460 states and 582 transitions. Second operand 44 states. [2020-10-29 04:05:06,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:05:06,064 INFO L93 Difference]: Finished difference Result 612 states and 743 transitions. [2020-10-29 04:05:06,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 04:05:06,064 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 336 [2020-10-29 04:05:06,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:05:06,067 INFO L225 Difference]: With dead ends: 612 [2020-10-29 04:05:06,067 INFO L226 Difference]: Without dead ends: 479 [2020-10-29 04:05:06,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 04:05:06,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-29 04:05:06,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 471. [2020-10-29 04:05:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-29 04:05:06,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 596 transitions. [2020-10-29 04:05:06,081 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 596 transitions. Word has length 336 [2020-10-29 04:05:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:05:06,081 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 596 transitions. [2020-10-29 04:05:06,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 04:05:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 596 transitions. [2020-10-29 04:05:06,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-29 04:05:06,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:05:06,085 INFO L422 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:05:06,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 04:05:06,085 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:05:06,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:05:06,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1427679969, now seen corresponding path program 39 times [2020-10-29 04:05:06,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:05:06,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141998700] [2020-10-29 04:05:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:05:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:06,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:07,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:11,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:11,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-29 04:05:11,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:05:11,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:05:11,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:11,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:11,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 04:05:11,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:05:11,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 04:05:11,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:12,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:05:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:12,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:12,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:12,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:05:12,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:12,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:05:12,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:12,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:05:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:12,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6683 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2020-10-29 04:05:12,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141998700] [2020-10-29 04:05:12,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:05:12,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-29 04:05:12,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815821213] [2020-10-29 04:05:12,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-29 04:05:12,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:05:12,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-29 04:05:12,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 04:05:12,783 INFO L87 Difference]: Start difference. First operand 471 states and 596 transitions. Second operand 45 states. [2020-10-29 04:05:14,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:05:14,441 INFO L93 Difference]: Finished difference Result 626 states and 760 transitions. [2020-10-29 04:05:14,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 04:05:14,442 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 344 [2020-10-29 04:05:14,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:05:14,446 INFO L225 Difference]: With dead ends: 626 [2020-10-29 04:05:14,446 INFO L226 Difference]: Without dead ends: 490 [2020-10-29 04:05:14,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 04:05:14,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-29 04:05:14,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 482. [2020-10-29 04:05:14,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-10-29 04:05:14,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 610 transitions. [2020-10-29 04:05:14,463 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 610 transitions. Word has length 344 [2020-10-29 04:05:14,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:05:14,463 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 610 transitions. [2020-10-29 04:05:14,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-29 04:05:14,463 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 610 transitions. [2020-10-29 04:05:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-29 04:05:14,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:05:14,466 INFO L422 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:05:14,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 04:05:14,467 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:05:14,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:05:14,467 INFO L82 PathProgramCache]: Analyzing trace with hash -623086089, now seen corresponding path program 40 times [2020-10-29 04:05:14,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:05:14,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827644829] [2020-10-29 04:05:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:05:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:14,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:19,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:19,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-29 04:05:19,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:05:19,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 04:05:19,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:19,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:19,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 04:05:19,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:05:19,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-29 04:05:19,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:21,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:05:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:21,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:21,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:05:21,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:21,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:05:21,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:21,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:05:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:21,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:21,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7014 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2020-10-29 04:05:21,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827644829] [2020-10-29 04:05:21,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:05:21,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 04:05:21,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871406644] [2020-10-29 04:05:21,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 04:05:21,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:05:21,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 04:05:21,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 04:05:21,294 INFO L87 Difference]: Start difference. First operand 482 states and 610 transitions. Second operand 46 states. [2020-10-29 04:05:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:05:22,801 INFO L93 Difference]: Finished difference Result 640 states and 777 transitions. [2020-10-29 04:05:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 04:05:22,802 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 352 [2020-10-29 04:05:22,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:05:22,805 INFO L225 Difference]: With dead ends: 640 [2020-10-29 04:05:22,806 INFO L226 Difference]: Without dead ends: 501 [2020-10-29 04:05:22,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 04:05:22,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-10-29 04:05:22,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 493. [2020-10-29 04:05:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-29 04:05:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 624 transitions. [2020-10-29 04:05:22,819 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 624 transitions. Word has length 352 [2020-10-29 04:05:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:05:22,819 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 624 transitions. [2020-10-29 04:05:22,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 04:05:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 624 transitions. [2020-10-29 04:05:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-29 04:05:22,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:05:22,822 INFO L422 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:05:22,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 04:05:22,823 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:05:22,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:05:22,823 INFO L82 PathProgramCache]: Analyzing trace with hash 891847713, now seen corresponding path program 41 times [2020-10-29 04:05:22,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:05:22,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169431478] [2020-10-29 04:05:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:05:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:22,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking...