/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/sorting_bubblesort_2_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:30:32,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:30:32,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:30:32,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:30:32,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:30:32,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:30:32,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:30:32,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:30:32,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:30:32,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:30:32,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:30:32,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:30:32,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:30:32,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:30:32,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:30:32,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:30:32,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:30:32,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:30:32,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:30:32,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:30:32,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:30:32,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:30:32,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:30:32,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:30:32,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:30:32,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:30:32,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:30:32,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:30:32,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:30:32,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 03:30:32,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:30:32,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:30:32,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:30:32,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:30:32,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:30:32,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:30:32,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:30:32,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:30:32,607 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:30:32,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:30:32,608 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:30:32,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:30:32,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:30:32,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:30:32,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:30:32,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:30:32,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:30:32,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:30:32,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:30:32,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:30:32,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:30:32,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:30:32,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:30:32,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:30:32,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:30:32,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:30:32,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:30:32,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:30:32,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:30:32,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:30:32,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:30:32,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:30:32,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:30:32,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:30:32,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:30:33,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:30:33,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:30:33,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:30:33,039 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:30:33,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_bubblesort_2_ground.i [2020-10-29 03:30:33,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09710accd/6a5d39f275b9431ca8a89dffafc78c6e/FLAGeab06f479 [2020-10-29 03:30:33,666 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:30:33,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/sorting_bubblesort_2_ground.i [2020-10-29 03:30:33,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09710accd/6a5d39f275b9431ca8a89dffafc78c6e/FLAGeab06f479 [2020-10-29 03:30:34,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09710accd/6a5d39f275b9431ca8a89dffafc78c6e [2020-10-29 03:30:34,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:30:34,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:30:34,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:30:34,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:30:34,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:30:34,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:30:34" (1/1) ... [2020-10-29 03:30:34,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abf298e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:34, skipping insertion in model container [2020-10-29 03:30:34,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:30:34" (1/1) ... [2020-10-29 03:30:34,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:30:34,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:30:34,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:30:34,269 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:30:34,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:30:34,310 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:30:34,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:34 WrapperNode [2020-10-29 03:30:34,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:30:34,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:30:34,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:30:34,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:30:34,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:34" (1/1) ... [2020-10-29 03:30:34,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:34" (1/1) ... [2020-10-29 03:30:34,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:34" (1/1) ... [2020-10-29 03:30:34,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:34" (1/1) ... [2020-10-29 03:30:34,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:34" (1/1) ... [2020-10-29 03:30:34,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:34" (1/1) ... [2020-10-29 03:30:34,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:34" (1/1) ... [2020-10-29 03:30:34,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:30:34,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:30:34,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:30:34,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:30:34,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:30:34,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:30:34,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:30:34,476 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:30:34,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:30:34,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:30:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:30:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:30:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:30:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:30:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:30:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:30:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:30:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:30:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:30:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:30:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:30:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:30:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:30:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:30:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:30:34,922 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:30:34,922 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-29 03:30:34,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:34 BoogieIcfgContainer [2020-10-29 03:30:34,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:30:34,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:30:34,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:30:34,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:30:34,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:30:34" (1/3) ... [2020-10-29 03:30:34,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417d1d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:30:34, skipping insertion in model container [2020-10-29 03:30:34,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:34" (2/3) ... [2020-10-29 03:30:34,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417d1d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:30:34, skipping insertion in model container [2020-10-29 03:30:34,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:34" (3/3) ... [2020-10-29 03:30:34,942 INFO L111 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_2_ground.i [2020-10-29 03:30:34,956 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:30:34,961 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:30:34,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:30:35,024 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:30:35,024 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:30:35,024 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:30:35,024 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:30:35,024 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:30:35,025 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:30:35,025 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:30:35,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:30:35,048 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-29 03:30:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:30:35,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:35,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:35,060 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:35,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:35,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1497277457, now seen corresponding path program 1 times [2020-10-29 03:30:35,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:35,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144002453] [2020-10-29 03:30:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:35,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:35,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:30:35,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-29 03:30:35,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:35,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:30:35,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:35,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:30:35,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:35,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:35,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:35,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:35,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:35,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 03:30:35,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:35,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:35,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:35,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:35,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144002453] [2020-10-29 03:30:35,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:30:35,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 03:30:35,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669516774] [2020-10-29 03:30:35,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 03:30:35,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:35,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 03:30:35,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:30:35,769 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-29 03:30:35,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:35,885 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2020-10-29 03:30:35,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 03:30:35,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-29 03:30:35,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:35,895 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:30:35,895 INFO L226 Difference]: Without dead ends: 28 [2020-10-29 03:30:35,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:30:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-29 03:30:35,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-29 03:30:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 03:30:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-29 03:30:35,945 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-10-29 03:30:35,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:35,946 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-29 03:30:35,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 03:30:35,946 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-29 03:30:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:30:35,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:35,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:35,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:30:35,948 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:35,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:35,949 INFO L82 PathProgramCache]: Analyzing trace with hash 947624462, now seen corresponding path program 1 times [2020-10-29 03:30:35,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:35,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986398520] [2020-10-29 03:30:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:35,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:35,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:36,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:36,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:30:36,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:36,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-29 03:30:36,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:36,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:30:36,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:36,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:36,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:36,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:36,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:30:36,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:36,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:30:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:36,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986398520] [2020-10-29 03:30:36,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:30:36,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:30:36,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893887898] [2020-10-29 03:30:36,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:30:36,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:36,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:30:36,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:30:36,327 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2020-10-29 03:30:36,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:36,486 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-10-29 03:30:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:30:36,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-29 03:30:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:36,488 INFO L225 Difference]: With dead ends: 50 [2020-10-29 03:30:36,488 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 03:30:36,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:30:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 03:30:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-29 03:30:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:30:36,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-29 03:30:36,511 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 18 [2020-10-29 03:30:36,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:36,511 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-29 03:30:36,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:30:36,512 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-29 03:30:36,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:30:36,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:36,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:36,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:30:36,515 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:36,516 INFO L82 PathProgramCache]: Analyzing trace with hash -196258576, now seen corresponding path program 1 times [2020-10-29 03:30:36,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:36,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088496288] [2020-10-29 03:30:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:36,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:36,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:36,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:30:36,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:36,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 03:30:36,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:36,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:30:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:30:36,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:36,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:36,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:36,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:36,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:36,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:36,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:36,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:36,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088496288] [2020-10-29 03:30:36,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:36,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:30:36,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148637207] [2020-10-29 03:30:36,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:30:36,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:36,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:30:36,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:30:36,803 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states. [2020-10-29 03:30:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:36,891 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-29 03:30:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:30:36,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-29 03:30:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:36,893 INFO L225 Difference]: With dead ends: 52 [2020-10-29 03:30:36,893 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 03:30:36,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:30:36,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 03:30:36,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-29 03:30:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:30:36,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-29 03:30:36,902 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 20 [2020-10-29 03:30:36,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:36,903 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-29 03:30:36,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:30:36,903 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-29 03:30:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:30:36,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:36,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:36,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:30:36,905 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:36,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:36,906 INFO L82 PathProgramCache]: Analyzing trace with hash 43769682, now seen corresponding path program 2 times [2020-10-29 03:30:36,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:36,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512928228] [2020-10-29 03:30:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:36,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:37,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:37,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:30:37,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:37,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-29 03:30:37,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:37,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:30:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:30:37,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:30:37,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:37,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:37,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:37,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:37,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:37,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:37,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:37,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:37,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512928228] [2020-10-29 03:30:37,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:37,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:30:37,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809317224] [2020-10-29 03:30:37,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:30:37,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:37,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:30:37,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:30:37,269 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2020-10-29 03:30:37,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:37,358 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-29 03:30:37,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:30:37,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-29 03:30:37,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:37,360 INFO L225 Difference]: With dead ends: 54 [2020-10-29 03:30:37,360 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 03:30:37,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:30:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 03:30:37,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-29 03:30:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:30:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-29 03:30:37,368 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 22 [2020-10-29 03:30:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:37,368 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-29 03:30:37,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:30:37,368 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-29 03:30:37,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:30:37,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:37,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:37,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:30:37,370 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:37,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:37,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1217308364, now seen corresponding path program 3 times [2020-10-29 03:30:37,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:37,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244367767] [2020-10-29 03:30:37,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:37,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:37,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:37,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:37,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:30:37,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:37,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 03:30:37,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:37,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:30:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:30:37,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:37,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:37,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:37,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:37,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:37,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:37,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:30:37,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:37,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:37,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:37,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:37,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:37,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:37,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244367767] [2020-10-29 03:30:37,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:37,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:30:37,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294539169] [2020-10-29 03:30:37,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:30:37,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:37,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:30:37,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:30:37,674 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2020-10-29 03:30:37,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:37,801 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-29 03:30:37,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:30:37,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-29 03:30:37,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:37,803 INFO L225 Difference]: With dead ends: 56 [2020-10-29 03:30:37,803 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:30:37,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:30:37,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:30:37,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-29 03:30:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 03:30:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-29 03:30:37,811 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 24 [2020-10-29 03:30:37,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:37,811 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-29 03:30:37,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:30:37,811 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-29 03:30:37,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:30:37,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:37,812 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:37,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:30:37,813 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:37,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:37,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1932533098, now seen corresponding path program 4 times [2020-10-29 03:30:37,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:37,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017768714] [2020-10-29 03:30:37,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:37,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:37,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:38,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:38,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:30:38,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:38,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 03:30:38,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:38,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:30:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:30:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:38,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:38,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:38,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:38,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:38,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:38,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:38,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:38,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017768714] [2020-10-29 03:30:38,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:38,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:30:38,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489455199] [2020-10-29 03:30:38,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:30:38,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:38,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:30:38,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:30:38,176 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 8 states. [2020-10-29 03:30:38,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:38,278 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-10-29 03:30:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:30:38,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-29 03:30:38,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:38,280 INFO L225 Difference]: With dead ends: 58 [2020-10-29 03:30:38,281 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 03:30:38,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:30:38,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 03:30:38,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-29 03:30:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 03:30:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-29 03:30:38,296 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 26 [2020-10-29 03:30:38,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:38,296 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-29 03:30:38,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:30:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-29 03:30:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:30:38,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:38,297 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:38,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:30:38,298 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:38,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:38,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2068735112, now seen corresponding path program 5 times [2020-10-29 03:30:38,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:38,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888371828] [2020-10-29 03:30:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:38,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:38,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:38,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:38,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:30:38,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:38,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-29 03:30:38,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:38,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:38,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:30:38,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:38,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:30:38,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:38,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:38,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:38,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:38,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:38,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:38,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:38,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:38,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888371828] [2020-10-29 03:30:38,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:38,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:30:38,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785718649] [2020-10-29 03:30:38,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:30:38,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:38,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:30:38,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:30:38,861 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 9 states. [2020-10-29 03:30:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:38,974 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-29 03:30:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:30:38,975 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-29 03:30:38,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:38,976 INFO L225 Difference]: With dead ends: 60 [2020-10-29 03:30:38,976 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 03:30:38,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:30:38,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 03:30:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-29 03:30:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:30:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-29 03:30:38,982 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 28 [2020-10-29 03:30:38,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:38,983 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-29 03:30:38,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:30:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-29 03:30:38,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:30:38,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:38,984 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:38,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:30:38,984 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:38,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:38,985 INFO L82 PathProgramCache]: Analyzing trace with hash 185115610, now seen corresponding path program 6 times [2020-10-29 03:30:38,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:38,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650400713] [2020-10-29 03:30:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:39,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:39,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:39,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:30:39,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:39,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-29 03:30:39,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:39,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:39,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:30:39,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:30:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:39,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:39,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:39,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:39,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:39,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:39,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:39,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:39,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650400713] [2020-10-29 03:30:39,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:39,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:30:39,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259462290] [2020-10-29 03:30:39,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:30:39,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:39,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:30:39,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:30:39,457 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 10 states. [2020-10-29 03:30:39,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:39,584 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-29 03:30:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:30:39,585 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-29 03:30:39,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:39,586 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:30:39,586 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:30:39,587 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 03:30:39,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:30:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-29 03:30:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 03:30:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-29 03:30:39,593 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2020-10-29 03:30:39,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:39,593 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-29 03:30:39,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:30:39,594 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-29 03:30:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:30:39,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:39,595 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:39,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:30:39,595 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:39,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:39,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1472142268, now seen corresponding path program 7 times [2020-10-29 03:30:39,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:39,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665501867] [2020-10-29 03:30:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:39,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:40,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:30:40,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:40,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-29 03:30:40,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:40,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:40,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:30:40,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:40,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:30:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:40,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:40,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:40,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:40,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:40,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:40,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:40,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:40,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665501867] [2020-10-29 03:30:40,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:40,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:30:40,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402543789] [2020-10-29 03:30:40,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:30:40,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:40,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:30:40,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:30:40,326 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 11 states. [2020-10-29 03:30:40,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:40,489 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-29 03:30:40,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:30:40,490 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-29 03:30:40,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:40,491 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:30:40,491 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:30:40,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:30:40,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:30:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 03:30:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:30:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-29 03:30:40,499 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 32 [2020-10-29 03:30:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:40,499 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-29 03:30:40,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:30:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-29 03:30:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:30:40,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:40,501 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:40,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:30:40,501 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:40,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:40,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1354179358, now seen corresponding path program 8 times [2020-10-29 03:30:40,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:40,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301334861] [2020-10-29 03:30:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:41,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:30:41,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:41,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-29 03:30:41,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:41,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:30:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:30:41,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:41,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:41,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:41,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:41,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:41,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:41,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:41,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301334861] [2020-10-29 03:30:41,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:41,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:30:41,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018717879] [2020-10-29 03:30:41,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:30:41,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:41,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:30:41,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:30:41,397 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 12 states. [2020-10-29 03:30:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:41,582 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-10-29 03:30:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:30:41,583 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-29 03:30:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:41,584 INFO L225 Difference]: With dead ends: 66 [2020-10-29 03:30:41,584 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:30:41,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:30:41,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:30:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 03:30:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:30:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-29 03:30:41,596 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 34 [2020-10-29 03:30:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:41,598 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-29 03:30:41,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:30:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-29 03:30:41,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:30:41,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:41,601 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:41,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:30:41,601 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:41,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:41,602 INFO L82 PathProgramCache]: Analyzing trace with hash -339027456, now seen corresponding path program 9 times [2020-10-29 03:30:41,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:41,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119251898] [2020-10-29 03:30:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:41,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:42,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:30:42,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:42,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-10-29 03:30:42,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:42,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:30:42,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:42,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:30:42,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:42,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:42,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:42,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:42,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:42,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:42,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:42,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:42,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:42,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:42,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:42,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:42,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119251898] [2020-10-29 03:30:42,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:42,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:30:42,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183133411] [2020-10-29 03:30:42,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:30:42,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:42,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:30:42,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:30:42,653 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 13 states. [2020-10-29 03:30:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:42,814 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-29 03:30:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:30:42,815 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-29 03:30:42,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:42,816 INFO L225 Difference]: With dead ends: 68 [2020-10-29 03:30:42,816 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:30:42,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:30:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:30:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 03:30:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:30:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-10-29 03:30:42,829 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 36 [2020-10-29 03:30:42,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:42,829 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-10-29 03:30:42,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:30:42,829 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-10-29 03:30:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:30:42,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:42,830 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:42,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:30:42,831 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:42,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:42,831 INFO L82 PathProgramCache]: Analyzing trace with hash 281829474, now seen corresponding path program 10 times [2020-10-29 03:30:42,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:42,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456624566] [2020-10-29 03:30:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:42,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:43,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:43,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:30:43,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:43,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-29 03:30:43,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:43,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:30:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:30:43,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:43,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:43,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:43,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:43,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:43,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:43,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:43,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:43,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:43,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:43,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456624566] [2020-10-29 03:30:43,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:43,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:30:43,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114655629] [2020-10-29 03:30:43,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:30:43,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:43,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:30:43,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:30:43,942 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 14 states. [2020-10-29 03:30:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:44,091 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-10-29 03:30:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:30:44,091 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-29 03:30:44,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:44,092 INFO L225 Difference]: With dead ends: 70 [2020-10-29 03:30:44,092 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:30:44,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:30:44,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:30:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-29 03:30:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:30:44,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-29 03:30:44,099 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 38 [2020-10-29 03:30:44,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:44,099 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-29 03:30:44,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:30:44,100 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-29 03:30:44,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:30:44,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:44,101 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:44,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:30:44,101 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:44,102 INFO L82 PathProgramCache]: Analyzing trace with hash -75114940, now seen corresponding path program 11 times [2020-10-29 03:30:44,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:44,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396939204] [2020-10-29 03:30:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:44,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:44,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:45,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:30:45,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:45,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1140 [2020-10-29 03:30:45,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:45,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:45,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:30:45,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:45,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:30:45,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:30:45,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:45,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:45,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:45,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:45,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:45,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:45,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:45,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396939204] [2020-10-29 03:30:45,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:45,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:30:45,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029710315] [2020-10-29 03:30:45,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:30:45,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:45,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:30:45,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:30:45,492 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 15 states. [2020-10-29 03:30:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:45,663 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-29 03:30:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:30:45,664 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-10-29 03:30:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:45,665 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:30:45,665 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:30:45,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:30:45,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:30:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 03:30:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 03:30:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-10-29 03:30:45,676 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 40 [2020-10-29 03:30:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:45,676 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-10-29 03:30:45,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:30:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-10-29 03:30:45,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:30:45,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:45,677 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:45,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:30:45,677 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:45,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:45,681 INFO L82 PathProgramCache]: Analyzing trace with hash 498686886, now seen corresponding path program 12 times [2020-10-29 03:30:45,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:45,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725970956] [2020-10-29 03:30:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:46,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:30:46,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:46,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1116 [2020-10-29 03:30:46,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:46,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:46,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:30:46,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:46,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:30:46,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:47,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:47,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:47,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:47,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:47,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:47,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:47,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725970956] [2020-10-29 03:30:47,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:47,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:30:47,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597783460] [2020-10-29 03:30:47,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:30:47,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:47,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:30:47,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:30:47,032 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 16 states. [2020-10-29 03:30:47,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:47,216 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-10-29 03:30:47,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:30:47,217 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-29 03:30:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:47,218 INFO L225 Difference]: With dead ends: 74 [2020-10-29 03:30:47,218 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:30:47,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:30:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:30:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-29 03:30:47,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:30:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-10-29 03:30:47,224 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 42 [2020-10-29 03:30:47,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:47,225 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-10-29 03:30:47,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:30:47,225 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-10-29 03:30:47,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:30:47,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:47,226 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:47,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:30:47,227 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:47,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:47,227 INFO L82 PathProgramCache]: Analyzing trace with hash -2128539512, now seen corresponding path program 13 times [2020-10-29 03:30:47,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:47,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413879541] [2020-10-29 03:30:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:48,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:30:48,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:48,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-10-29 03:30:48,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:48,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:30:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:30:48,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:48,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:48,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:48,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:48,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:48,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:48,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413879541] [2020-10-29 03:30:48,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:48,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:30:48,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940138521] [2020-10-29 03:30:48,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:30:48,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:48,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:30:48,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:30:48,830 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 17 states. [2020-10-29 03:30:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:49,071 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-29 03:30:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:30:49,072 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-29 03:30:49,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:49,073 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:30:49,073 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:30:49,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:30:49,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:30:49,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 03:30:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:30:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-10-29 03:30:49,082 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 44 [2020-10-29 03:30:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:49,083 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-10-29 03:30:49,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:30:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-10-29 03:30:49,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:30:49,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:49,089 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:49,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:30:49,090 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:49,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:49,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1452337942, now seen corresponding path program 14 times [2020-10-29 03:30:49,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:49,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419900415] [2020-10-29 03:30:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:49,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:50,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:50,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:30:50,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:50,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1615 [2020-10-29 03:30:50,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:50,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:30:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:30:50,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:51,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:51,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:51,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:51,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:51,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:51,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:51,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:51,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419900415] [2020-10-29 03:30:51,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:51,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:30:51,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504799050] [2020-10-29 03:30:51,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:30:51,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:51,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:30:51,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:30:51,062 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 18 states. [2020-10-29 03:30:51,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:51,214 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-10-29 03:30:51,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:30:51,215 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2020-10-29 03:30:51,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:51,216 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:30:51,216 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:30:51,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:30:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:30:51,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 03:30:51,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:30:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-10-29 03:30:51,231 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 46 [2020-10-29 03:30:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:51,231 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-10-29 03:30:51,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:30:51,231 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-10-29 03:30:51,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:30:51,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:51,233 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:51,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:30:51,233 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:51,234 INFO L82 PathProgramCache]: Analyzing trace with hash -162690868, now seen corresponding path program 15 times [2020-10-29 03:30:51,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:51,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100541811] [2020-10-29 03:30:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:52,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:52,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:30:52,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:52,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1504 [2020-10-29 03:30:52,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:52,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:30:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:30:52,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:53,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:53,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:53,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:53,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:53,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:53,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:53,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:53,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:53,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:53,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:53,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:53,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100541811] [2020-10-29 03:30:53,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:53,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:30:53,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110545169] [2020-10-29 03:30:53,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:30:53,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:53,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:30:53,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:30:53,044 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 19 states. [2020-10-29 03:30:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:53,181 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-29 03:30:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:30:53,182 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-29 03:30:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:53,183 INFO L225 Difference]: With dead ends: 80 [2020-10-29 03:30:53,183 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:30:53,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:30:53,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:30:53,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 03:30:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:30:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-10-29 03:30:53,190 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 48 [2020-10-29 03:30:53,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:53,190 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-10-29 03:30:53,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:30:53,191 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-10-29 03:30:53,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:30:53,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:53,191 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:53,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:30:53,192 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:53,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:53,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2057401298, now seen corresponding path program 16 times [2020-10-29 03:30:53,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:53,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182685788] [2020-10-29 03:30:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:53,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:54,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:54,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:30:54,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1529 [2020-10-29 03:30:54,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:54,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:30:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:30:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:55,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:55,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:55,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:55,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:55,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:55,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:55,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:55,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182685788] [2020-10-29 03:30:55,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:55,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:30:55,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285800619] [2020-10-29 03:30:55,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:30:55,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:55,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:30:55,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:30:55,064 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 20 states. [2020-10-29 03:30:55,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:55,337 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2020-10-29 03:30:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:30:55,338 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2020-10-29 03:30:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:55,339 INFO L225 Difference]: With dead ends: 82 [2020-10-29 03:30:55,339 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:30:55,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:30:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:30:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-29 03:30:55,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:30:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-10-29 03:30:55,345 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 50 [2020-10-29 03:30:55,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:55,345 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-10-29 03:30:55,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:30:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-10-29 03:30:55,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:30:55,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:55,346 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:55,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:30:55,346 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:55,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:55,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1807991024, now seen corresponding path program 17 times [2020-10-29 03:30:55,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:55,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736891015] [2020-10-29 03:30:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:55,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:57,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:57,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:30:57,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:57,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1640 [2020-10-29 03:30:57,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:57,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:57,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:30:57,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:57,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:30:57,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:57,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:57,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:57,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:57,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:57,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:57,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:57,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:57,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:57,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:57,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:57,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:57,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:57,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736891015] [2020-10-29 03:30:57,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:57,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:30:57,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589855895] [2020-10-29 03:30:57,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:30:57,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:57,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:30:57,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:30:57,407 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 21 states. [2020-10-29 03:30:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:57,669 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-29 03:30:57,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:30:57,670 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2020-10-29 03:30:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:57,671 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:30:57,671 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 03:30:57,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:30:57,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 03:30:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 03:30:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:30:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-10-29 03:30:57,678 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 52 [2020-10-29 03:30:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:57,678 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-10-29 03:30:57,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:30:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-10-29 03:30:57,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:30:57,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:57,679 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:57,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:30:57,679 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:57,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:57,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1652081010, now seen corresponding path program 18 times [2020-10-29 03:30:57,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:57,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795388679] [2020-10-29 03:30:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:57,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:57,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:59,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:59,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:30:59,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1843 [2020-10-29 03:30:59,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:59,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:30:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:30:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:59,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:59,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:59,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:59,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:59,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:59,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:59,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:59,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:59,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795388679] [2020-10-29 03:30:59,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:59,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:30:59,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800712147] [2020-10-29 03:30:59,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:30:59,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:59,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:30:59,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:30:59,909 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 22 states. [2020-10-29 03:31:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:00,059 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2020-10-29 03:31:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:31:00,060 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-10-29 03:31:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:00,061 INFO L225 Difference]: With dead ends: 86 [2020-10-29 03:31:00,061 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:31:00,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:31:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:31:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 03:31:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:31:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-10-29 03:31:00,068 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 54 [2020-10-29 03:31:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:00,068 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-10-29 03:31:00,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:31:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-10-29 03:31:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:31:00,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:00,069 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:00,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:31:00,069 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:00,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1818348716, now seen corresponding path program 19 times [2020-10-29 03:31:00,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:00,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787849877] [2020-10-29 03:31:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:00,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:01,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:01,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:31:01,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:01,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1907 [2020-10-29 03:31:01,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:01,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:01,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:31:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:31:01,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:02,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:02,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:02,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:02,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:02,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:02,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:02,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:02,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787849877] [2020-10-29 03:31:02,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:02,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:31:02,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990793483] [2020-10-29 03:31:02,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:31:02,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:02,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:31:02,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:31:02,394 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 23 states. [2020-10-29 03:31:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:02,714 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-29 03:31:02,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:31:02,715 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2020-10-29 03:31:02,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:02,716 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:31:02,716 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:31:02,717 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 03:31:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:31:02,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-29 03:31:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:31:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-10-29 03:31:02,725 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 56 [2020-10-29 03:31:02,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:02,726 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-10-29 03:31:02,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:31:02,727 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-10-29 03:31:02,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:31:02,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:02,729 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:02,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:31:02,730 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:02,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:02,732 INFO L82 PathProgramCache]: Analyzing trace with hash 288273590, now seen corresponding path program 20 times [2020-10-29 03:31:02,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:02,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945731005] [2020-10-29 03:31:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:02,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:02,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:04,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:04,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:31:04,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:04,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2010 [2020-10-29 03:31:04,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:04,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:31:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:31:04,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:05,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:05,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:05,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:05,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:05,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:05,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:05,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:05,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:05,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:05,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945731005] [2020-10-29 03:31:05,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:05,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:31:05,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010583360] [2020-10-29 03:31:05,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:31:05,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:05,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:31:05,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:31:05,172 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 24 states. [2020-10-29 03:31:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:05,414 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2020-10-29 03:31:05,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:31:05,416 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2020-10-29 03:31:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:05,419 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:31:05,419 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:31:05,419 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 03:31:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:31:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-29 03:31:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:31:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2020-10-29 03:31:05,425 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 58 [2020-10-29 03:31:05,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:05,425 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2020-10-29 03:31:05,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:31:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2020-10-29 03:31:05,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 03:31:05,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:05,426 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:05,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:31:05,426 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:05,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:05,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1822713240, now seen corresponding path program 21 times [2020-10-29 03:31:05,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:05,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4660513] [2020-10-29 03:31:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:05,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:05,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:07,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:07,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:31:07,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:07,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2132 [2020-10-29 03:31:07,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:07,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:31:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:31:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:08,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:08,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:08,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:08,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:08,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:08,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:08,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:31:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:08,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4660513] [2020-10-29 03:31:08,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:08,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:31:08,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979003987] [2020-10-29 03:31:08,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:31:08,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:08,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:31:08,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:31:08,134 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand 25 states. [2020-10-29 03:31:08,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:08,332 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-29 03:31:08,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:31:08,332 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-10-29 03:31:08,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:08,333 INFO L225 Difference]: With dead ends: 92 [2020-10-29 03:31:08,333 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:31:08,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:31:08,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:31:08,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-29 03:31:08,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:31:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-10-29 03:31:08,344 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 60 [2020-10-29 03:31:08,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:08,344 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-10-29 03:31:08,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:31:08,344 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-10-29 03:31:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:31:08,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:08,345 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:08,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:31:08,345 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:08,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:08,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1049532934, now seen corresponding path program 22 times [2020-10-29 03:31:08,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:08,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298147807] [2020-10-29 03:31:08,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:08,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:10,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:10,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:31:10,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:10,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2149 [2020-10-29 03:31:10,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:10,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:31:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:31:10,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:10,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:10,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:10,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:10,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:10,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:10,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:10,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:10,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:10,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298147807] [2020-10-29 03:31:10,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:10,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:31:10,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142662256] [2020-10-29 03:31:10,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:31:10,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:10,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:31:10,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:31:10,992 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 26 states. [2020-10-29 03:31:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:11,233 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-10-29 03:31:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:31:11,234 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2020-10-29 03:31:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:11,235 INFO L225 Difference]: With dead ends: 94 [2020-10-29 03:31:11,235 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:31:11,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:31:11,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:31:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-29 03:31:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:31:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-10-29 03:31:11,240 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 62 [2020-10-29 03:31:11,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:11,241 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-10-29 03:31:11,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:31:11,241 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-10-29 03:31:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:31:11,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:11,242 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:11,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:31:11,242 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:11,242 INFO L82 PathProgramCache]: Analyzing trace with hash 385865180, now seen corresponding path program 23 times [2020-10-29 03:31:11,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:11,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017235467] [2020-10-29 03:31:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:11,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:11,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:13,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:13,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:31:13,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:13,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1801 [2020-10-29 03:31:13,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:13,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:13,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:31:13,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:13,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:31:13,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:13,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:13,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:13,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:13,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:13,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:13,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:13,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:13,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:13,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:13,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:13,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:13,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:13,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017235467] [2020-10-29 03:31:13,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:13,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:31:13,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120080400] [2020-10-29 03:31:13,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:31:13,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:13,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:31:13,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:31:13,586 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 27 states. [2020-10-29 03:31:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:13,885 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-29 03:31:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:31:13,886 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2020-10-29 03:31:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:13,887 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:31:13,887 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:31:13,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:31:13,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:31:13,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-29 03:31:13,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:31:13,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-10-29 03:31:13,895 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 64 [2020-10-29 03:31:13,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:13,896 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-10-29 03:31:13,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:31:13,896 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-10-29 03:31:13,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:31:13,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:13,896 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:13,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:31:13,898 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:13,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:13,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1118950718, now seen corresponding path program 24 times [2020-10-29 03:31:13,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:13,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994049710] [2020-10-29 03:31:13,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:13,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:13,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:15,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:15,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 03:31:15,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:15,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1942 [2020-10-29 03:31:15,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:15,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:31:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:15,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:31:15,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:16,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:16,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:16,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:16,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:16,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:16,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:16,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:16,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:16,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:16,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:16,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994049710] [2020-10-29 03:31:16,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:16,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:31:16,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966535600] [2020-10-29 03:31:16,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:31:16,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:16,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:31:16,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:31:16,419 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 28 states. [2020-10-29 03:31:16,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:16,600 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2020-10-29 03:31:16,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:31:16,601 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 66 [2020-10-29 03:31:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:16,602 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:31:16,602 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:31:16,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:31:16,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:31:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-29 03:31:16,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:31:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-10-29 03:31:16,607 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 66 [2020-10-29 03:31:16,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:16,607 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-10-29 03:31:16,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:31:16,607 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-10-29 03:31:16,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 03:31:16,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:16,608 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:16,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:31:16,608 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:16,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:16,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1239516192, now seen corresponding path program 25 times [2020-10-29 03:31:16,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:16,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399500040] [2020-10-29 03:31:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:16,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:16,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:18,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:31:18,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2293 [2020-10-29 03:31:18,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:18,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:31:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:31:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:19,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:19,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:19,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:19,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:19,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:19,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:19,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:19,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:19,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:19,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399500040] [2020-10-29 03:31:19,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:19,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:31:19,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827087452] [2020-10-29 03:31:19,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:31:19,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:19,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:31:19,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:31:19,546 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 29 states. [2020-10-29 03:31:19,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:19,893 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-29 03:31:19,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:31:19,894 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 68 [2020-10-29 03:31:19,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:19,896 INFO L225 Difference]: With dead ends: 100 [2020-10-29 03:31:19,896 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:31:19,899 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 03:31:19,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:31:19,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-29 03:31:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:31:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-10-29 03:31:19,909 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 68 [2020-10-29 03:31:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:19,910 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-10-29 03:31:19,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:31:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-10-29 03:31:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:31:19,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:19,911 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:19,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:31:19,912 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:19,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:19,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1138819714, now seen corresponding path program 26 times [2020-10-29 03:31:19,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:19,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415160747] [2020-10-29 03:31:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:19,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:19,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:22,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:22,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 03:31:22,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:22,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2339 [2020-10-29 03:31:22,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:22,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:22,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:31:22,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:22,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:31:22,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:22,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:22,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:22,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:22,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:22,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:22,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:22,918 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:22,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415160747] [2020-10-29 03:31:22,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:22,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:31:22,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280949589] [2020-10-29 03:31:22,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:31:22,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:22,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:31:22,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:31:22,920 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 30 states. [2020-10-29 03:31:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:23,206 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2020-10-29 03:31:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:31:23,207 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2020-10-29 03:31:23,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:23,208 INFO L225 Difference]: With dead ends: 102 [2020-10-29 03:31:23,208 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:31:23,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:31:23,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:31:23,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-29 03:31:23,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:31:23,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2020-10-29 03:31:23,213 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 70 [2020-10-29 03:31:23,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:23,213 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2020-10-29 03:31:23,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:31:23,213 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2020-10-29 03:31:23,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:31:23,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:23,214 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:23,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:31:23,214 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:23,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:23,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1141215132, now seen corresponding path program 27 times [2020-10-29 03:31:23,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:23,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775045711] [2020-10-29 03:31:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:23,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:23,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:25,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:25,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:31:25,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:25,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2414 [2020-10-29 03:31:25,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:25,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:31:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:31:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:26,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:26,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:26,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:26,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:26,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:26,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:26,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:26,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775045711] [2020-10-29 03:31:26,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:26,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:31:26,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550024356] [2020-10-29 03:31:26,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:31:26,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:26,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:31:26,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:31:26,352 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand 31 states. [2020-10-29 03:31:26,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:26,715 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-29 03:31:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:31:26,716 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2020-10-29 03:31:26,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:26,717 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:31:26,717 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:31:26,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:31:26,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:31:26,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-29 03:31:26,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:31:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-10-29 03:31:26,725 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 72 [2020-10-29 03:31:26,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:26,725 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-10-29 03:31:26,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:31:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-10-29 03:31:26,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 03:31:26,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:26,726 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:26,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:31:26,726 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:26,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:26,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1821381178, now seen corresponding path program 28 times [2020-10-29 03:31:26,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:26,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366520755] [2020-10-29 03:31:26,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:26,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:29,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:29,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:31:29,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:29,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2750 [2020-10-29 03:31:29,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:29,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:31:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:29,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:31:29,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:30,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:30,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:30,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:30,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:30,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:30,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:30,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:30,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366520755] [2020-10-29 03:31:30,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:30,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:31:30,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087524442] [2020-10-29 03:31:30,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:31:30,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:30,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:31:30,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:31:30,213 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 32 states. [2020-10-29 03:31:30,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:30,569 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2020-10-29 03:31:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:31:30,570 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 74 [2020-10-29 03:31:30,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:30,571 INFO L225 Difference]: With dead ends: 106 [2020-10-29 03:31:30,571 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:31:30,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:31:30,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:31:30,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-29 03:31:30,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:31:30,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2020-10-29 03:31:30,577 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 74 [2020-10-29 03:31:30,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:30,578 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2020-10-29 03:31:30,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:31:30,578 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2020-10-29 03:31:30,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:31:30,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:30,579 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:30,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:31:30,579 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:30,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1669044904, now seen corresponding path program 29 times [2020-10-29 03:31:30,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:30,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897589840] [2020-10-29 03:31:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:30,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:33,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:33,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:31:33,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:33,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2878 [2020-10-29 03:31:33,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:33,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:31:33,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:33,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:31:33,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:34,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:34,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:34,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:34,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:34,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:34,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:34,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:34,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:34,262 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:34,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897589840] [2020-10-29 03:31:34,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:34,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:31:34,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618407305] [2020-10-29 03:31:34,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:31:34,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:34,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:31:34,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:31:34,266 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 33 states. [2020-10-29 03:31:34,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:34,604 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-29 03:31:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:31:34,605 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2020-10-29 03:31:34,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:34,605 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:31:34,605 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:31:34,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:31:34,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:31:34,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-29 03:31:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 03:31:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2020-10-29 03:31:34,611 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 76 [2020-10-29 03:31:34,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:34,612 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2020-10-29 03:31:34,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:31:34,612 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2020-10-29 03:31:34,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:31:34,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:34,613 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:34,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:31:34,613 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:34,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:34,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1599051530, now seen corresponding path program 30 times [2020-10-29 03:31:34,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:34,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567620721] [2020-10-29 03:31:34,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:34,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:34,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:37,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:37,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 03:31:37,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:37,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3155 [2020-10-29 03:31:37,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:37,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:37,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:31:37,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:37,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:31:37,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:38,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:38,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:38,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:38,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:38,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:38,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:38,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:38,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:38,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:38,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567620721] [2020-10-29 03:31:38,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:38,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:31:38,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827862839] [2020-10-29 03:31:38,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:31:38,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:38,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:31:38,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:31:38,566 INFO L87 Difference]: Start difference. First operand 87 states and 92 transitions. Second operand 34 states. [2020-10-29 03:31:38,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:38,941 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-10-29 03:31:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:31:38,941 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2020-10-29 03:31:38,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:38,943 INFO L225 Difference]: With dead ends: 110 [2020-10-29 03:31:38,943 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:31:38,945 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 03:31:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:31:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-29 03:31:38,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:31:38,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2020-10-29 03:31:38,950 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 78 [2020-10-29 03:31:38,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:38,950 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2020-10-29 03:31:38,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:31:38,950 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2020-10-29 03:31:38,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:31:38,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:38,951 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:38,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:31:38,951 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:38,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:38,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1240071444, now seen corresponding path program 31 times [2020-10-29 03:31:38,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:38,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792746750] [2020-10-29 03:31:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:38,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:42,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:42,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:31:42,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:42,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3235 [2020-10-29 03:31:42,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:42,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:31:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:31:42,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:43,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:43,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:43,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:43,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:43,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:43,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:43,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:43,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:43,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:43,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792746750] [2020-10-29 03:31:43,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:43,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:31:43,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794772659] [2020-10-29 03:31:43,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:31:43,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:43,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:31:43,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:31:43,055 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 35 states. [2020-10-29 03:31:43,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:43,297 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-29 03:31:43,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:31:43,297 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2020-10-29 03:31:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:43,299 INFO L225 Difference]: With dead ends: 112 [2020-10-29 03:31:43,299 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:31:43,300 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 03:31:43,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:31:43,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-29 03:31:43,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:31:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2020-10-29 03:31:43,305 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 80 [2020-10-29 03:31:43,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:43,305 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2020-10-29 03:31:43,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:31:43,306 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2020-10-29 03:31:43,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:31:43,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:43,307 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:43,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:31:43,307 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:43,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:43,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1961950798, now seen corresponding path program 32 times [2020-10-29 03:31:43,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:43,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468305682] [2020-10-29 03:31:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:46,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:46,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:31:46,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:46,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3440 [2020-10-29 03:31:46,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:46,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:46,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:31:46,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:46,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:31:46,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:47,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:47,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:47,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:47,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:47,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:47,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:47,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:47,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:47,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468305682] [2020-10-29 03:31:47,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:47,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:31:47,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661072241] [2020-10-29 03:31:47,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:31:47,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:47,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:31:47,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:31:47,676 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand 36 states. [2020-10-29 03:31:48,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:48,057 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2020-10-29 03:31:48,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:31:48,058 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2020-10-29 03:31:48,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:48,059 INFO L225 Difference]: With dead ends: 114 [2020-10-29 03:31:48,059 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 03:31:48,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:31:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 03:31:48,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-29 03:31:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 03:31:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2020-10-29 03:31:48,066 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 82 [2020-10-29 03:31:48,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:48,066 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2020-10-29 03:31:48,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:31:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2020-10-29 03:31:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:31:48,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:48,068 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:48,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:31:48,068 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:48,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:48,069 INFO L82 PathProgramCache]: Analyzing trace with hash -386225872, now seen corresponding path program 33 times [2020-10-29 03:31:48,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:48,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302204526] [2020-10-29 03:31:48,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:48,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:48,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:52,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:52,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:31:52,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:52,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3937 [2020-10-29 03:31:52,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:52,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:31:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 03:31:52,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:52,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:52,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:52,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:52,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:52,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:52,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:52,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:52,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:52,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:52,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:52,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302204526] [2020-10-29 03:31:52,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:52,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:31:52,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063323477] [2020-10-29 03:31:52,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:31:52,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:52,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:31:52,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:31:52,930 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand 37 states. [2020-10-29 03:31:53,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:53,307 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-29 03:31:53,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:31:53,307 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 84 [2020-10-29 03:31:53,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:53,308 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:31:53,309 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 03:31:53,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:31:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 03:31:53,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-29 03:31:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:31:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2020-10-29 03:31:53,315 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 84 [2020-10-29 03:31:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:53,316 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2020-10-29 03:31:53,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:31:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2020-10-29 03:31:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 03:31:53,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:53,317 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:53,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:31:53,317 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:53,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2126175342, now seen corresponding path program 34 times [2020-10-29 03:31:53,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:53,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143332804] [2020-10-29 03:31:53,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:53,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:57,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:57,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:31:57,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3991 [2020-10-29 03:31:57,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:57,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:31:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 03:31:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:58,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:58,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:58,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:58,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:58,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:58,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:58,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:58,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143332804] [2020-10-29 03:31:58,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:58,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:31:58,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051529686] [2020-10-29 03:31:58,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:31:58,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:58,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:31:58,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:31:58,361 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand 38 states. [2020-10-29 03:31:58,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:58,706 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2020-10-29 03:31:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:31:58,707 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 86 [2020-10-29 03:31:58,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:58,708 INFO L225 Difference]: With dead ends: 118 [2020-10-29 03:31:58,708 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:31:58,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:31:58,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:31:58,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-29 03:31:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 03:31:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2020-10-29 03:31:58,725 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 86 [2020-10-29 03:31:58,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:58,725 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2020-10-29 03:31:58,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:31:58,726 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2020-10-29 03:31:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:31:58,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:58,727 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:58,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:31:58,727 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:58,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:58,728 INFO L82 PathProgramCache]: Analyzing trace with hash 819629428, now seen corresponding path program 35 times [2020-10-29 03:31:58,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:58,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831217948] [2020-10-29 03:31:58,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:58,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:58,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:02,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:02,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 03:32:02,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:02,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4204 [2020-10-29 03:32:02,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:02,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:32:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 03:32:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:04,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:04,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:04,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:04,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:04,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:04,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:04,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:04,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:04,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831217948] [2020-10-29 03:32:04,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:04,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:32:04,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879487391] [2020-10-29 03:32:04,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:32:04,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:04,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:32:04,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:32:04,043 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand 39 states. [2020-10-29 03:32:04,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:04,275 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-29 03:32:04,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:32:04,276 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 88 [2020-10-29 03:32:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:04,277 INFO L225 Difference]: With dead ends: 120 [2020-10-29 03:32:04,278 INFO L226 Difference]: Without dead ends: 100 [2020-10-29 03:32:04,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:32:04,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-29 03:32:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-29 03:32:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 03:32:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2020-10-29 03:32:04,285 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 88 [2020-10-29 03:32:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:04,285 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2020-10-29 03:32:04,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:32:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2020-10-29 03:32:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 03:32:04,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:04,287 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:04,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:32:04,287 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:04,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:04,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1354565334, now seen corresponding path program 36 times [2020-10-29 03:32:04,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:04,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833567839] [2020-10-29 03:32:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:04,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:04,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:09,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:09,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 03:32:09,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:09,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4748 [2020-10-29 03:32:09,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:09,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:32:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 03:32:09,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:10,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:10,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:10,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:10,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:10,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:10,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:10,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833567839] [2020-10-29 03:32:10,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:10,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:32:10,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618887855] [2020-10-29 03:32:10,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:32:10,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:10,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:32:10,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:32:10,151 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand 40 states. [2020-10-29 03:32:10,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:10,577 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-10-29 03:32:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:32:10,578 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 90 [2020-10-29 03:32:10,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:10,579 INFO L225 Difference]: With dead ends: 122 [2020-10-29 03:32:10,580 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 03:32:10,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:32:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 03:32:10,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-29 03:32:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 03:32:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2020-10-29 03:32:10,586 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 90 [2020-10-29 03:32:10,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:10,587 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2020-10-29 03:32:10,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:32:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2020-10-29 03:32:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 03:32:10,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:10,588 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:10,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:32:10,588 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:10,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:10,589 INFO L82 PathProgramCache]: Analyzing trace with hash 31895480, now seen corresponding path program 37 times [2020-10-29 03:32:10,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:10,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075737569] [2020-10-29 03:32:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:10,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:10,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:15,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:15,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:32:15,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:15,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4901 [2020-10-29 03:32:15,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:15,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 03:32:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 03:32:15,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:16,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:16,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:16,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:16,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:16,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:16,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:16,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:16,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:16,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075737569] [2020-10-29 03:32:16,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:16,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 03:32:16,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523978228] [2020-10-29 03:32:16,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 03:32:16,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:16,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 03:32:16,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:32:16,659 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand 41 states. [2020-10-29 03:32:17,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:17,091 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-29 03:32:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 03:32:17,091 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 92 [2020-10-29 03:32:17,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:17,092 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:32:17,092 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:32:17,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:32:17,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:32:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-29 03:32:17,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 03:32:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-10-29 03:32:17,099 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 92 [2020-10-29 03:32:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:17,100 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-10-29 03:32:17,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 03:32:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-10-29 03:32:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:32:17,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:17,102 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:17,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:32:17,102 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:17,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:17,102 INFO L82 PathProgramCache]: Analyzing trace with hash 256485402, now seen corresponding path program 38 times [2020-10-29 03:32:17,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:17,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506595516] [2020-10-29 03:32:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:17,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:17,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:32:22,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:22,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:32:22,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 03:32:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 03:32:22,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:23,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:23,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:23,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:23,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:23,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:23,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:23,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:23,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506595516] [2020-10-29 03:32:23,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:23,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:32:23,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295929269] [2020-10-29 03:32:23,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:32:23,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:23,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:32:23,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:32:23,332 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 42 states. [2020-10-29 03:32:23,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:23,762 INFO L93 Difference]: Finished difference Result 126 states and 136 transitions. [2020-10-29 03:32:23,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:32:23,763 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2020-10-29 03:32:23,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:23,764 INFO L225 Difference]: With dead ends: 126 [2020-10-29 03:32:23,764 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 03:32:23,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:32:23,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 03:32:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-29 03:32:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-29 03:32:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2020-10-29 03:32:23,770 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 94 [2020-10-29 03:32:23,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:23,771 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2020-10-29 03:32:23,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:32:23,771 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2020-10-29 03:32:23,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 03:32:23,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:23,772 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:23,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:32:23,772 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:23,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:23,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1339035644, now seen corresponding path program 39 times [2020-10-29 03:32:23,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:23,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917868233] [2020-10-29 03:32:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:23,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:23,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:28,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:28,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 03:32:28,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:32:28,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:28,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 03:32:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 03:32:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:30,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:30,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:30,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:30,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:30,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:30,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:30,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:30,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:30,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:30,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:30,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:30,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917868233] [2020-10-29 03:32:30,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:30,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-29 03:32:30,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925585310] [2020-10-29 03:32:30,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-29 03:32:30,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:30,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-29 03:32:30,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:32:30,102 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand 43 states. [2020-10-29 03:32:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:30,557 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-29 03:32:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 03:32:30,558 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 96 [2020-10-29 03:32:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:30,559 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:32:30,559 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 03:32:30,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:32:30,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 03:32:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-29 03:32:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 03:32:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2020-10-29 03:32:30,566 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 96 [2020-10-29 03:32:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:30,567 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2020-10-29 03:32:30,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-29 03:32:30,567 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2020-10-29 03:32:30,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 03:32:30,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:30,568 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:30,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:32:30,568 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:30,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:30,569 INFO L82 PathProgramCache]: Analyzing trace with hash -2007234722, now seen corresponding path program 40 times [2020-10-29 03:32:30,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:30,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784516933] [2020-10-29 03:32:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:35,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:35,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:32:35,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:35,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:32:35,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:35,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:35,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 03:32:35,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:35,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 03:32:35,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:36,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:36,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:36,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:36,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:36,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:32:36,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:36,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:36,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:36,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784516933] [2020-10-29 03:32:36,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:36,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 03:32:36,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248360668] [2020-10-29 03:32:36,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 03:32:36,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:36,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 03:32:36,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:32:36,904 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand 44 states. [2020-10-29 03:32:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:37,367 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2020-10-29 03:32:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 03:32:37,368 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2020-10-29 03:32:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:37,369 INFO L225 Difference]: With dead ends: 130 [2020-10-29 03:32:37,369 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:32:37,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:32:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:32:37,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-29 03:32:37,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 03:32:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2020-10-29 03:32:37,375 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 98 [2020-10-29 03:32:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:37,376 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2020-10-29 03:32:37,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 03:32:37,376 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2020-10-29 03:32:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:32:37,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:37,377 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:37,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 03:32:37,377 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:37,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:37,377 INFO L82 PathProgramCache]: Analyzing trace with hash -842551744, now seen corresponding path program 41 times [2020-10-29 03:32:37,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:37,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404063127] [2020-10-29 03:32:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:37,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:37,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:42,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:42,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 03:32:42,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:42,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:32:42,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:42,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:42,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 03:32:42,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:42,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 03:32:42,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:43,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:43,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:43,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:43,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:43,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:43,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:43,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:43,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:43,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404063127] [2020-10-29 03:32:43,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:43,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-29 03:32:43,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677316717] [2020-10-29 03:32:43,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-29 03:32:43,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:43,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-29 03:32:43,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:32:43,789 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand 45 states. [2020-10-29 03:32:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:44,104 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-29 03:32:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 03:32:44,104 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 100 [2020-10-29 03:32:44,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:44,106 INFO L225 Difference]: With dead ends: 132 [2020-10-29 03:32:44,106 INFO L226 Difference]: Without dead ends: 112 [2020-10-29 03:32:44,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:32:44,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-29 03:32:44,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-29 03:32:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 03:32:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2020-10-29 03:32:44,111 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 100 [2020-10-29 03:32:44,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:44,112 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2020-10-29 03:32:44,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-29 03:32:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2020-10-29 03:32:44,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 03:32:44,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:44,113 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:44,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 03:32:44,113 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:44,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:44,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1726293154, now seen corresponding path program 42 times [2020-10-29 03:32:44,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:44,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877903815] [2020-10-29 03:32:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 03:32:49,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:32:49,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 03:32:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 03:32:49,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:50,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:50,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:50,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:50,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:50,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:50,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:50,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:50,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877903815] [2020-10-29 03:32:50,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:50,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 03:32:50,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342646452] [2020-10-29 03:32:50,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 03:32:50,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:50,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 03:32:50,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:32:50,685 INFO L87 Difference]: Start difference. First operand 111 states and 116 transitions. Second operand 46 states. [2020-10-29 03:32:51,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:51,135 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2020-10-29 03:32:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 03:32:51,136 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 102 [2020-10-29 03:32:51,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:51,137 INFO L225 Difference]: With dead ends: 134 [2020-10-29 03:32:51,137 INFO L226 Difference]: Without dead ends: 114 [2020-10-29 03:32:51,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:32:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-29 03:32:51,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-29 03:32:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:32:51,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 118 transitions. [2020-10-29 03:32:51,143 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 118 transitions. Word has length 102 [2020-10-29 03:32:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:51,144 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 118 transitions. [2020-10-29 03:32:51,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 03:32:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 118 transitions. [2020-10-29 03:32:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 03:32:51,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:51,145 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:51,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 03:32:51,145 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:51,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:51,145 INFO L82 PathProgramCache]: Analyzing trace with hash 780044932, now seen corresponding path program 43 times [2020-10-29 03:32:51,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:51,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492344168] [2020-10-29 03:32:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:51,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:51,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:56,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:56,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:32:56,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:56,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:32:56,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:56,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:56,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-29 03:32:56,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:56,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 03:32:56,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:57,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:57,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:57,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:57,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:57,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:57,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:57,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:57,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492344168] [2020-10-29 03:32:57,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:57,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-29 03:32:57,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070603161] [2020-10-29 03:32:57,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-29 03:32:57,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:57,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-29 03:32:57,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:32:57,674 INFO L87 Difference]: Start difference. First operand 113 states and 118 transitions. Second operand 47 states. [2020-10-29 03:32:57,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:57,953 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-29 03:32:57,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 03:32:57,953 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 104 [2020-10-29 03:32:57,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:57,955 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:32:57,955 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:32:57,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:32:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:32:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-29 03:32:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 03:32:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2020-10-29 03:32:57,960 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 104 [2020-10-29 03:32:57,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:57,961 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2020-10-29 03:32:57,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-29 03:32:57,961 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2020-10-29 03:32:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 03:32:57,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:57,962 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:57,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 03:32:57,962 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1968570342, now seen corresponding path program 44 times [2020-10-29 03:32:57,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:57,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468138110] [2020-10-29 03:32:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:58,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:03,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:03,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 03:33:03,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 03:33:03,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:03,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-29 03:33:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 03:33:03,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:04,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:04,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:04,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:04,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:04,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:04,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:04,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:04,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:04,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:04,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468138110] [2020-10-29 03:33:04,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:04,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 03:33:04,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058144621] [2020-10-29 03:33:04,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 03:33:04,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:04,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 03:33:04,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:33:04,642 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand 48 states. [2020-10-29 03:33:05,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:05,162 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2020-10-29 03:33:05,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 03:33:05,163 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 106 [2020-10-29 03:33:05,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:05,164 INFO L225 Difference]: With dead ends: 138 [2020-10-29 03:33:05,164 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 03:33:05,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:33:05,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 03:33:05,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-29 03:33:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:33:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2020-10-29 03:33:05,170 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 106 [2020-10-29 03:33:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:05,170 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2020-10-29 03:33:05,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 03:33:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2020-10-29 03:33:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 03:33:05,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:05,171 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:05,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 03:33:05,171 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:05,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1680188616, now seen corresponding path program 45 times [2020-10-29 03:33:05,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:05,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226623401] [2020-10-29 03:33:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:05,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:05,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:10,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:10,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 03:33:10,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 03:33:10,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:10,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-29 03:33:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 03:33:10,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:11,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:11,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:11,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:11,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:11,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:11,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:11,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:11,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:11,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:11,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226623401] [2020-10-29 03:33:11,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:11,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-29 03:33:11,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466654642] [2020-10-29 03:33:11,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-29 03:33:11,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:11,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-29 03:33:11,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:33:11,872 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand 49 states. [2020-10-29 03:33:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:12,300 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-29 03:33:12,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-29 03:33:12,301 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 108 [2020-10-29 03:33:12,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:12,302 INFO L225 Difference]: With dead ends: 140 [2020-10-29 03:33:12,302 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 03:33:12,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:33:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 03:33:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-29 03:33:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 03:33:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2020-10-29 03:33:12,310 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 108 [2020-10-29 03:33:12,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:12,311 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2020-10-29 03:33:12,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-29 03:33:12,311 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2020-10-29 03:33:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 03:33:12,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:12,312 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:12,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 03:33:12,312 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:12,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:12,313 INFO L82 PathProgramCache]: Analyzing trace with hash -576743126, now seen corresponding path program 46 times [2020-10-29 03:33:12,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:12,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189912138] [2020-10-29 03:33:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:12,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:17,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:17,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 03:33:17,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 03:33:17,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:17,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-29 03:33:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 03:33:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:19,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:19,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:19,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:19,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:19,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:19,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:19,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:19,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:19,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:19,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:19,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189912138] [2020-10-29 03:33:19,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:19,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-29 03:33:19,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017181337] [2020-10-29 03:33:19,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-29 03:33:19,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:19,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-29 03:33:19,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:33:19,144 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand 50 states. [2020-10-29 03:33:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:19,530 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2020-10-29 03:33:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 03:33:19,531 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 110 [2020-10-29 03:33:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:19,532 INFO L225 Difference]: With dead ends: 142 [2020-10-29 03:33:19,533 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 03:33:19,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:33:19,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 03:33:19,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-29 03:33:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-29 03:33:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2020-10-29 03:33:19,539 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 110 [2020-10-29 03:33:19,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:19,539 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2020-10-29 03:33:19,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-29 03:33:19,539 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2020-10-29 03:33:19,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:33:19,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:19,540 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:19,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 03:33:19,540 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:19,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:19,541 INFO L82 PathProgramCache]: Analyzing trace with hash -529662708, now seen corresponding path program 47 times [2020-10-29 03:33:19,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:19,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43872266] [2020-10-29 03:33:19,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:19,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:24,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:24,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 03:33:24,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:24,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 03:33:24,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:24,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-29 03:33:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 03:33:24,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:26,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:26,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:26,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:26,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:26,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:26,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:26,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43872266] [2020-10-29 03:33:26,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:26,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-29 03:33:26,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529401846] [2020-10-29 03:33:26,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-29 03:33:26,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:26,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-29 03:33:26,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:33:26,362 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand 51 states. [2020-10-29 03:33:26,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:26,922 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-29 03:33:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-29 03:33:26,923 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 112 [2020-10-29 03:33:26,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:26,925 INFO L225 Difference]: With dead ends: 144 [2020-10-29 03:33:26,925 INFO L226 Difference]: Without dead ends: 124 [2020-10-29 03:33:26,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:33:26,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-29 03:33:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-29 03:33:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-29 03:33:26,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2020-10-29 03:33:26,932 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 112 [2020-10-29 03:33:26,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:26,932 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 128 transitions. [2020-10-29 03:33:26,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-29 03:33:26,933 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions. [2020-10-29 03:33:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 03:33:26,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:26,934 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:26,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 03:33:26,934 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:26,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1764946030, now seen corresponding path program 48 times [2020-10-29 03:33:26,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:26,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471130073] [2020-10-29 03:33:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:27,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:31,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:31,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 03:33:31,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:31,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:33:31,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:31,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:31,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-29 03:33:31,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:31,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 03:33:31,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:33,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:33,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:33,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:33,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:33,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:33,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:33:33,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:33,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:33,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:33,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471130073] [2020-10-29 03:33:33,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:33,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-29 03:33:33,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792003315] [2020-10-29 03:33:33,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-29 03:33:33,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:33,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-29 03:33:33,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:33:33,857 INFO L87 Difference]: Start difference. First operand 123 states and 128 transitions. Second operand 52 states. [2020-10-29 03:33:34,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:34,258 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2020-10-29 03:33:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 03:33:34,259 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 114 [2020-10-29 03:33:34,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:34,260 INFO L225 Difference]: With dead ends: 146 [2020-10-29 03:33:34,261 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 03:33:34,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:33:34,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 03:33:34,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-29 03:33:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 03:33:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2020-10-29 03:33:34,266 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 114 [2020-10-29 03:33:34,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:34,266 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2020-10-29 03:33:34,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-29 03:33:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2020-10-29 03:33:34,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 03:33:34,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:34,267 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:34,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 03:33:34,268 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:34,268 INFO L82 PathProgramCache]: Analyzing trace with hash -729246896, now seen corresponding path program 49 times [2020-10-29 03:33:34,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:34,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639568898] [2020-10-29 03:33:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:34,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:34,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:39,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:39,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:33:39,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 03:33:39,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:39,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-29 03:33:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 03:33:39,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:41,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:41,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:41,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:41,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:41,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:41,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:41,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:41,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:41,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:41,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639568898] [2020-10-29 03:33:41,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:41,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-29 03:33:41,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108350899] [2020-10-29 03:33:41,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-29 03:33:41,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:41,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-29 03:33:41,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:33:41,348 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 53 states. [2020-10-29 03:33:41,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:41,939 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-29 03:33:41,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 03:33:41,945 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 116 [2020-10-29 03:33:41,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:41,946 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:33:41,946 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 03:33:41,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:33:41,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 03:33:41,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2020-10-29 03:33:41,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-29 03:33:41,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 132 transitions. [2020-10-29 03:33:41,953 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 132 transitions. Word has length 116 [2020-10-29 03:33:41,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:41,954 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 132 transitions. [2020-10-29 03:33:41,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-29 03:33:41,955 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 132 transitions. [2020-10-29 03:33:41,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 03:33:41,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:41,957 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:41,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 03:33:41,957 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:41,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:41,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1056897614, now seen corresponding path program 50 times [2020-10-29 03:33:41,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:41,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751683700] [2020-10-29 03:33:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:42,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 03:33:46,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:46,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:33:46,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-29 03:33:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 03:33:46,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:48,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:48,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:48,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:48,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:48,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:48,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:48,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:48,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:48,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:48,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:48,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:48,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:49,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751683700] [2020-10-29 03:33:49,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:49,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-29 03:33:49,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545137202] [2020-10-29 03:33:49,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-29 03:33:49,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:49,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-29 03:33:49,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:33:49,009 INFO L87 Difference]: Start difference. First operand 127 states and 132 transitions. Second operand 54 states. [2020-10-29 03:33:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:49,589 INFO L93 Difference]: Finished difference Result 150 states and 160 transitions. [2020-10-29 03:33:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 03:33:49,590 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 118 [2020-10-29 03:33:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:49,591 INFO L225 Difference]: With dead ends: 150 [2020-10-29 03:33:49,592 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:33:49,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:33:49,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:33:49,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-29 03:33:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-29 03:33:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2020-10-29 03:33:49,597 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 118 [2020-10-29 03:33:49,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:49,598 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2020-10-29 03:33:49,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-29 03:33:49,598 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2020-10-29 03:33:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 03:33:49,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:49,599 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:49,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 03:33:49,599 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:49,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:49,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1898342292, now seen corresponding path program 51 times [2020-10-29 03:33:49,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:49,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058793498] [2020-10-29 03:33:49,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:49,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:54,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:54,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 03:33:54,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:54,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 03:33:54,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:54,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-29 03:33:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 03:33:54,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:56,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:56,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:56,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:56,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:56,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:56,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:56,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058793498] [2020-10-29 03:33:56,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:56,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-29 03:33:56,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205703836] [2020-10-29 03:33:56,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-29 03:33:56,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:56,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-29 03:33:56,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:33:56,807 INFO L87 Difference]: Start difference. First operand 129 states and 134 transitions. Second operand 55 states. [2020-10-29 03:33:57,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:57,194 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-29 03:33:57,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 03:33:57,195 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 120 [2020-10-29 03:33:57,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:57,197 INFO L225 Difference]: With dead ends: 152 [2020-10-29 03:33:57,197 INFO L226 Difference]: Without dead ends: 132 [2020-10-29 03:33:57,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:33:57,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-29 03:33:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-29 03:33:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-29 03:33:57,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 136 transitions. [2020-10-29 03:33:57,204 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 136 transitions. Word has length 120 [2020-10-29 03:33:57,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:57,204 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 136 transitions. [2020-10-29 03:33:57,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-29 03:33:57,204 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 136 transitions. [2020-10-29 03:33:57,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 03:33:57,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:57,205 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:57,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-29 03:33:57,205 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:57,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:57,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1384457994, now seen corresponding path program 52 times [2020-10-29 03:33:57,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:57,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24170059] [2020-10-29 03:33:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 03:34:02,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 03:34:02,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-29 03:34:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 03:34:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:04,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:04,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:04,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:04,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:04,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:04,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:04,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:04,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:04,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24170059] [2020-10-29 03:34:04,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:04,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-29 03:34:04,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809020238] [2020-10-29 03:34:04,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-29 03:34:04,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:04,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-29 03:34:04,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:34:04,453 INFO L87 Difference]: Start difference. First operand 131 states and 136 transitions. Second operand 56 states. [2020-10-29 03:34:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:05,076 INFO L93 Difference]: Finished difference Result 154 states and 164 transitions. [2020-10-29 03:34:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-29 03:34:05,077 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2020-10-29 03:34:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:05,078 INFO L225 Difference]: With dead ends: 154 [2020-10-29 03:34:05,079 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:34:05,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:34:05,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:34:05,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-29 03:34:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 03:34:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2020-10-29 03:34:05,085 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 122 [2020-10-29 03:34:05,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:05,086 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 138 transitions. [2020-10-29 03:34:05,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-29 03:34:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 138 transitions. [2020-10-29 03:34:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 03:34:05,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:05,087 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:05,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-29 03:34:05,087 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:05,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:05,088 INFO L82 PathProgramCache]: Analyzing trace with hash 645429720, now seen corresponding path program 53 times [2020-10-29 03:34:05,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:05,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142698721] [2020-10-29 03:34:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:05,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:10,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:10,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 03:34:10,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:10,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:34:10,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:10,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:10,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-29 03:34:10,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:10,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 03:34:10,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:12,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:12,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:12,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:12,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:12,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:12,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:12,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:12,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142698721] [2020-10-29 03:34:12,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:12,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-29 03:34:12,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478781311] [2020-10-29 03:34:12,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-29 03:34:12,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:12,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-29 03:34:12,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:34:12,437 INFO L87 Difference]: Start difference. First operand 133 states and 138 transitions. Second operand 57 states. [2020-10-29 03:34:13,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:13,052 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-29 03:34:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-29 03:34:13,053 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 124 [2020-10-29 03:34:13,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:13,054 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:34:13,054 INFO L226 Difference]: Without dead ends: 136 [2020-10-29 03:34:13,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:34:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-29 03:34:13,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-10-29 03:34:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 03:34:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 140 transitions. [2020-10-29 03:34:13,061 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 140 transitions. Word has length 124 [2020-10-29 03:34:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:13,061 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 140 transitions. [2020-10-29 03:34:13,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-29 03:34:13,061 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 140 transitions. [2020-10-29 03:34:13,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 03:34:13,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:13,062 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:13,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-29 03:34:13,062 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:13,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:13,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1452370490, now seen corresponding path program 54 times [2020-10-29 03:34:13,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:13,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153054908] [2020-10-29 03:34:13,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:13,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:18,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:18,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 03:34:18,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:18,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:34:18,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:18,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-29 03:34:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:18,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 03:34:18,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:20,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:20,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:20,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:20,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:34:20,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:20,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:20,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153054908] [2020-10-29 03:34:20,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:20,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-29 03:34:20,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939647140] [2020-10-29 03:34:20,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-29 03:34:20,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:20,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-29 03:34:20,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:34:20,572 INFO L87 Difference]: Start difference. First operand 135 states and 140 transitions. Second operand 58 states. [2020-10-29 03:34:21,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:21,224 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2020-10-29 03:34:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-29 03:34:21,225 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 126 [2020-10-29 03:34:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:21,226 INFO L225 Difference]: With dead ends: 158 [2020-10-29 03:34:21,226 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 03:34:21,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:34:21,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 03:34:21,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2020-10-29 03:34:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-29 03:34:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 142 transitions. [2020-10-29 03:34:21,231 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 142 transitions. Word has length 126 [2020-10-29 03:34:21,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:21,232 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 142 transitions. [2020-10-29 03:34:21,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-29 03:34:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 142 transitions. [2020-10-29 03:34:21,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 03:34:21,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:21,233 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:21,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-29 03:34:21,233 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:21,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:21,234 INFO L82 PathProgramCache]: Analyzing trace with hash -466630116, now seen corresponding path program 55 times [2020-10-29 03:34:21,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:21,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5860540] [2020-10-29 03:34:21,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:21,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:26,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:26,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 03:34:26,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:26,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:34:26,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:26,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-29 03:34:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 03:34:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0