/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-cav19/array_init_pair_sum_const.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:15:18,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:15:18,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:15:18,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:15:18,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:15:18,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:15:18,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:15:18,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:15:18,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:15:18,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:15:18,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:15:18,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:15:18,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:15:18,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:15:18,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:15:18,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:15:18,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:15:18,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:15:18,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:15:18,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:15:18,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:15:18,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:15:18,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:15:18,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:15:18,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:15:18,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:15:18,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:15:18,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:15:18,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:15:18,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 03:15:18,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:15:18,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:15:18,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:15:18,463 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 03:15:18,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:15:18,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:15:18,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:15:18,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:15:18,517 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:15:18,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:15:18,518 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:15:18,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:15:18,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:15:18,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:15:18,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:15:18,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:15:18,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:15:18,519 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:15:18,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:15:18,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:15:18,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:15:18,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:15:18,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:15:18,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:15:18,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:15:18,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:15:18,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:15:18,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:15:18,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:15:18,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:15:18,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:15:18,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:15:18,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:15:18,523 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:15:18,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:15:18,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:15:18,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:15:18,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:15:18,947 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:15:18,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_pair_sum_const.c [2020-10-29 03:15:19,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44d278bb/9abe183b8cf649ccac4ee1fc599bed85/FLAG03c26436d [2020-10-29 03:15:19,690 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:15:19,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_init_pair_sum_const.c [2020-10-29 03:15:19,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44d278bb/9abe183b8cf649ccac4ee1fc599bed85/FLAG03c26436d [2020-10-29 03:15:20,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44d278bb/9abe183b8cf649ccac4ee1fc599bed85 [2020-10-29 03:15:20,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:15:20,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:15:20,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:15:20,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:15:20,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:15:20,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ded9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20, skipping insertion in model container [2020-10-29 03:15:20,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:15:20,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:15:20,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:15:20,328 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:15:20,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:15:20,366 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:15:20,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20 WrapperNode [2020-10-29 03:15:20,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:15:20,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:15:20,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:15:20,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:15:20,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:15:20,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:15:20,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:15:20,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:15:20,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (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 03:15:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:15:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:15:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:15:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:15:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:15:20,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:15:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:15:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:15:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:15:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:15:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:15:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:15:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:15:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:15:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:15:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:15:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:15:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:15:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:15:20,996 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:15:20,996 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:15:20,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:15:20 BoogieIcfgContainer [2020-10-29 03:15:20,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:15:21,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:15:21,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:15:21,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:15:21,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:15:20" (1/3) ... [2020-10-29 03:15:21,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8631cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:15:21, skipping insertion in model container [2020-10-29 03:15:21,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (2/3) ... [2020-10-29 03:15:21,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8631cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:15:21, skipping insertion in model container [2020-10-29 03:15:21,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:15:20" (3/3) ... [2020-10-29 03:15:21,019 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_pair_sum_const.c [2020-10-29 03:15:21,055 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:15:21,071 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:15:21,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:15:21,153 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:15:21,153 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:15:21,153 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:15:21,153 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:15:21,153 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:15:21,154 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:15:21,154 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:15:21,154 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:15:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-29 03:15:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 03:15:21,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:21,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:21,190 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:21,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:21,202 INFO L82 PathProgramCache]: Analyzing trace with hash 875303383, now seen corresponding path program 1 times [2020-10-29 03:15:21,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:21,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501366943] [2020-10-29 03:15:21,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:21,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:21,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:21,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:21,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:15:21,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:15:21,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-29 03:15:21,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:21,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:21,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:15:21,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:21,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:21,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:21,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:21,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:21,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:15:21,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:21,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:21,931 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 03:15:21,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501366943] [2020-10-29 03:15:21,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:15:21,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:15:21,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350637957] [2020-10-29 03:15:21,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:15:21,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:21,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:15:21,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:15:21,960 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-10-29 03:15:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:22,109 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-10-29 03:15:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:15:22,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-29 03:15:22,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:22,118 INFO L225 Difference]: With dead ends: 53 [2020-10-29 03:15:22,119 INFO L226 Difference]: Without dead ends: 25 [2020-10-29 03:15:22,122 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 03:15:22,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-29 03:15:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-29 03:15:22,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-29 03:15:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-29 03:15:22,166 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 16 [2020-10-29 03:15:22,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:22,166 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-29 03:15:22,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:15:22,167 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-29 03:15:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:15:22,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:22,168 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 03:15:22,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:15:22,169 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:22,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:22,170 INFO L82 PathProgramCache]: Analyzing trace with hash -974180161, now seen corresponding path program 1 times [2020-10-29 03:15:22,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:22,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83940184] [2020-10-29 03:15:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:15:22,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-29 03:15:22,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:15:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:22,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:22,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:22,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:15:22,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:22,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:22,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:22,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:15:22,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83940184] [2020-10-29 03:15:22,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:15:22,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:15:22,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227770156] [2020-10-29 03:15:22,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:15:22,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:22,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:15:22,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:15:22,945 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2020-10-29 03:15:23,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:23,076 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-10-29 03:15:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:15:23,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-29 03:15:23,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:23,079 INFO L225 Difference]: With dead ends: 39 [2020-10-29 03:15:23,079 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 03:15:23,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:15:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 03:15:23,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-29 03:15:23,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-29 03:15:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-29 03:15:23,089 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 18 [2020-10-29 03:15:23,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:23,090 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-29 03:15:23,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:15:23,090 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-29 03:15:23,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:15:23,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:23,094 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 03:15:23,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:15:23,094 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:23,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:23,095 INFO L82 PathProgramCache]: Analyzing trace with hash 9553057, now seen corresponding path program 1 times [2020-10-29 03:15:23,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:23,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065391792] [2020-10-29 03:15:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:23,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:23,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:23,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:15:23,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:23,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-29 03:15:23,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:23,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:23,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:15:23,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:15:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:23,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:23,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:23,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:23,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:23,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:15:23,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:23,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:23,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:15:23,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065391792] [2020-10-29 03:15:23,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:23,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:15:23,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192920191] [2020-10-29 03:15:23,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:15:23,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:23,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:15:23,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:15:23,647 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2020-10-29 03:15:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:23,899 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-10-29 03:15:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:15:23,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-29 03:15:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:23,903 INFO L225 Difference]: With dead ends: 51 [2020-10-29 03:15:23,904 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 03:15:23,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:15:23,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 03:15:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-10-29 03:15:23,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:15:23,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-29 03:15:23,918 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 20 [2020-10-29 03:15:23,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:23,919 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-29 03:15:23,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:15:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-29 03:15:23,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:15:23,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:23,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:23,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:15:23,921 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:23,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:23,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1194062501, now seen corresponding path program 2 times [2020-10-29 03:15:23,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:23,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681188095] [2020-10-29 03:15:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:23,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:26,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:26,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:15:26,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:15:26,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2337 [2020-10-29 03:15:26,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:26,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:26,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:15:26,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:26,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:15:26,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:15:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:27,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:27,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:27,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:27,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:27,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:15:27,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:27,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:27,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681188095] [2020-10-29 03:15:27,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:27,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:15:27,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863282751] [2020-10-29 03:15:27,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:15:27,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:27,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:15:27,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:15:27,151 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 14 states. [2020-10-29 03:15:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:27,989 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-29 03:15:27,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:15:27,990 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2020-10-29 03:15:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:27,991 INFO L225 Difference]: With dead ends: 42 [2020-10-29 03:15:27,991 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 03:15:27,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:15:27,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 03:15:28,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-10-29 03:15:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 03:15:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-29 03:15:28,001 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 24 [2020-10-29 03:15:28,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:28,002 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-29 03:15:28,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:15:28,002 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-29 03:15:28,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:15:28,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:28,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:28,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:15:28,004 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:28,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:28,004 INFO L82 PathProgramCache]: Analyzing trace with hash 62915595, now seen corresponding path program 1 times [2020-10-29 03:15:28,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:28,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328467070] [2020-10-29 03:15:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:28,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:28,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:28,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:28,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:28,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:15:28,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:28,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-29 03:15:28,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:28,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:15:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:15:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:15:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:29,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:29,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:29,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:29,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:29,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:15:29,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:29,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:29,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:15:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:29,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:29,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:29,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:29,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:29,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:29,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:29,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:15:29,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328467070] [2020-10-29 03:15:29,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:29,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:15:29,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502451406] [2020-10-29 03:15:29,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:15:29,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:29,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:15:29,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:15:29,091 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 9 states. [2020-10-29 03:15:29,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:29,394 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-10-29 03:15:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:15:29,395 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-29 03:15:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:29,397 INFO L225 Difference]: With dead ends: 70 [2020-10-29 03:15:29,397 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 03:15:29,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:15:29,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 03:15:29,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-10-29 03:15:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:15:29,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-29 03:15:29,422 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 32 [2020-10-29 03:15:29,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:29,423 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-29 03:15:29,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:15:29,423 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-29 03:15:29,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:15:29,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:29,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:29,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:15:29,426 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:29,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:29,426 INFO L82 PathProgramCache]: Analyzing trace with hash -594387953, now seen corresponding path program 2 times [2020-10-29 03:15:29,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:29,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713311659] [2020-10-29 03:15:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:29,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:29,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:34,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:34,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:15:34,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:15:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4818 [2020-10-29 03:15:34,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:34,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:15:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:15:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:34,676 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-29 03:15:34,868 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-29 03:15:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:35,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:35,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:35,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:35,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:35,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:35,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:35,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:35,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:35,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:35,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:35,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:15:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:35,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:35,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:35,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:35,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:35,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:35,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:35,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:35,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:35,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:35,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:35,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713311659] [2020-10-29 03:15:35,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:35,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:15:35,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51826379] [2020-10-29 03:15:35,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:15:35,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:35,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:15:35,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:15:35,231 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 17 states. [2020-10-29 03:15:36,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:36,026 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-10-29 03:15:36,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:15:36,027 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 36 [2020-10-29 03:15:36,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:36,030 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:15:36,031 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 03:15:36,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:15:36,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 03:15:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2020-10-29 03:15:36,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:15:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-29 03:15:36,046 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 36 [2020-10-29 03:15:36,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:36,046 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-29 03:15:36,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:15:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-29 03:15:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:15:36,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:36,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:36,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:15:36,049 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:36,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1640588431, now seen corresponding path program 3 times [2020-10-29 03:15:36,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:36,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87097779] [2020-10-29 03:15:36,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:36,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:40,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:40,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:15:40,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:40,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4170 [2020-10-29 03:15:40,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:40,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:15:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:15:40,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:40,805 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-10-29 03:15:41,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:41,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:41,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:41,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:41,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:41,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:15:41,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:41,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:41,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:15:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:41,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:41,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:41,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:41,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:41,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:41,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:41,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:41,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:41,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87097779] [2020-10-29 03:15:41,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:41,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:15:41,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985042190] [2020-10-29 03:15:41,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:15:41,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:41,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:15:41,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:15:41,428 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 17 states. [2020-10-29 03:15:42,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:42,406 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-10-29 03:15:42,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:15:42,409 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 38 [2020-10-29 03:15:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:42,410 INFO L225 Difference]: With dead ends: 66 [2020-10-29 03:15:42,410 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 03:15:42,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:15:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 03:15:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 47. [2020-10-29 03:15:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:15:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-29 03:15:42,439 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 38 [2020-10-29 03:15:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:42,440 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-29 03:15:42,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:15:42,441 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-29 03:15:42,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:15:42,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:42,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:42,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:15:42,448 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:42,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:42,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1224958837, now seen corresponding path program 4 times [2020-10-29 03:15:42,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:42,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799351334] [2020-10-29 03:15:42,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:42,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:42,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:42,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:44,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:44,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:15:44,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:44,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1695 [2020-10-29 03:15:44,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:44,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:15:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:15:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:15:44,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:44,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:44,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:44,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:44,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:44,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:44,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:44,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:44,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:44,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:44,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:15:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:44,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:44,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:44,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:44,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:44,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:15:44,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:44,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:44,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:15:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:44,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:44,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:44,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:44,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:44,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:44,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:44,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 03:15:44,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799351334] [2020-10-29 03:15:44,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:44,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:15:44,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114757362] [2020-10-29 03:15:44,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:15:44,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:44,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:15:44,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:15:44,315 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 11 states. [2020-10-29 03:15:44,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:44,663 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-10-29 03:15:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:15:44,664 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-29 03:15:44,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:44,666 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:15:44,666 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 03:15:44,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:15:44,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 03:15:44,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2020-10-29 03:15:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 03:15:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-10-29 03:15:44,679 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 44 [2020-10-29 03:15:44,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:44,680 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-10-29 03:15:44,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:15:44,680 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-10-29 03:15:44,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:15:44,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:44,681 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:44,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:15:44,681 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:44,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:44,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1660230279, now seen corresponding path program 5 times [2020-10-29 03:15:44,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:44,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617346217] [2020-10-29 03:15:44,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:44,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:44,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:46,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:48,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:49,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:49,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:15:49,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:15:49,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 03:15:49,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:49,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:15:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:15:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:50,781 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2020-10-29 03:15:51,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:51,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:51,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:51,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:51,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:51,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:51,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:51,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:51,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:15:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:51,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:51,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:51,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:51,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:15:51,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:51,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:51,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:15:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:51,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:51,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:51,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:51,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:51,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:51,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:51,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:51,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:15:51,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617346217] [2020-10-29 03:15:51,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:51,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:15:51,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756811814] [2020-10-29 03:15:51,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:15:51,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:51,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:15:51,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:15:51,097 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 19 states. [2020-10-29 03:15:52,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:52,312 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-10-29 03:15:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:15:52,313 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-29 03:15:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:52,314 INFO L225 Difference]: With dead ends: 66 [2020-10-29 03:15:52,314 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 03:15:52,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:15:52,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 03:15:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-10-29 03:15:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:15:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-10-29 03:15:52,331 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 48 [2020-10-29 03:15:52,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:52,331 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-10-29 03:15:52,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:15:52,331 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-10-29 03:15:52,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:15:52,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:52,332 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:52,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:15:52,333 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:52,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:52,333 INFO L82 PathProgramCache]: Analyzing trace with hash 356049631, now seen corresponding path program 6 times [2020-10-29 03:15:52,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:52,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213772662] [2020-10-29 03:15:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:52,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:52,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:55,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:15:55,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:55,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3009 [2020-10-29 03:15:55,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:55,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:55,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:15:55,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:15:55,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:15:55,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:55,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:55,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:55,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:15:55,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:55,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:55,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:55,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:15:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:55,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:55,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:55,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:15:55,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:55,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:55,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:15:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:55,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:55,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:55,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:55,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:55,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:55,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:55,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:55,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:15:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:55,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:55,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:15:55,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:55,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:55,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:15:55,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213772662] [2020-10-29 03:15:55,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:55,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:15:55,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502772435] [2020-10-29 03:15:55,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:15:55,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:55,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:15:55,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:15:55,570 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 13 states. [2020-10-29 03:15:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:56,018 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2020-10-29 03:15:56,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:15:56,018 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-10-29 03:15:56,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:56,020 INFO L225 Difference]: With dead ends: 106 [2020-10-29 03:15:56,020 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 03:15:56,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:15:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 03:15:56,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2020-10-29 03:15:56,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:15:56,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-10-29 03:15:56,051 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 56 [2020-10-29 03:15:56,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:56,052 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-10-29 03:15:56,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:15:56,052 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-10-29 03:15:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 03:15:56,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:56,053 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:56,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:15:56,053 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:56,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:56,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1024291101, now seen corresponding path program 7 times [2020-10-29 03:15:56,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:56,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326496746] [2020-10-29 03:15:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:56,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:57,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:02,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:02,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 03:16:02,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:16:02,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6018 [2020-10-29 03:16:02,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:02,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:16:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 03:16:02,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:02,767 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-10-29 03:16:03,122 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-29 03:16:03,474 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2020-10-29 03:16:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:03,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:03,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:03,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:03,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:03,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:03,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:03,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:16:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:03,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:03,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:03,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:03,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:03,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:03,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:03,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:03,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:16:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:03,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:03,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:03,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:03,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:03,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:03,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:03,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:03,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:03,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:16:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:03,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:03,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:03,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:03,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:03,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:03,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:03,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:03,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:03,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:03,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:16:03,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326496746] [2020-10-29 03:16:03,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:03,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:16:03,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870049381] [2020-10-29 03:16:03,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:16:03,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:03,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:16:03,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:16:03,857 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 22 states. [2020-10-29 03:16:04,869 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-10-29 03:16:05,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:05,466 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2020-10-29 03:16:05,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:16:05,468 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 60 [2020-10-29 03:16:05,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:05,470 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:16:05,470 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 03:16:05,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:16:05,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 03:16:05,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2020-10-29 03:16:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:16:05,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-29 03:16:05,485 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 60 [2020-10-29 03:16:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:05,485 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-29 03:16:05,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:16:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-29 03:16:05,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 03:16:05,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:05,487 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:05,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:16:05,487 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:05,488 INFO L82 PathProgramCache]: Analyzing trace with hash -172129719, now seen corresponding path program 8 times [2020-10-29 03:16:05,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:05,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113869514] [2020-10-29 03:16:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:05,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:09,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:16:09,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:16:09,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4124 [2020-10-29 03:16:09,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:09,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:16:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:16:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:16:09,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:09,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:09,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:09,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:09,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:09,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:09,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:09,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:09,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:16:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:09,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:09,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:09,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:09,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:09,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:09,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:09,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:09,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:16:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:09,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:09,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:09,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:09,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:09,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:09,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:09,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:16:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:09,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:09,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:09,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:09,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:09,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:09,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:09,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:09,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:09,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:09,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:09,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:16:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:09,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:09,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:09,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:09,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:09,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:09,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:09,865 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 40 proven. 25 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-29 03:16:09,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113869514] [2020-10-29 03:16:09,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:09,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:16:09,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127412013] [2020-10-29 03:16:09,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:16:09,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:09,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:16:09,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:16:09,868 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 15 states. [2020-10-29 03:16:10,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:10,380 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-29 03:16:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:16:10,380 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-29 03:16:10,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:10,382 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:16:10,382 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 03:16:10,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:16:10,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 03:16:10,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2020-10-29 03:16:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:16:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-10-29 03:16:10,397 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 68 [2020-10-29 03:16:10,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:10,397 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-10-29 03:16:10,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:16:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-10-29 03:16:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:16:10,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:10,399 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:10,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:16:10,399 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:10,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:10,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1361467469, now seen corresponding path program 9 times [2020-10-29 03:16:10,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:10,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819642573] [2020-10-29 03:16:10,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:10,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:12,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:15,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:15,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:16:15,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:16:15,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 03:16:15,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:15,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:16:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 03:16:15,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:17,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:17,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:17,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:16:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:17,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:17,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:16:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:17,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:17,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:17,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:16:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:17,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:17,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:17,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:16:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:17,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:17,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:17,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 8 proven. 104 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:16:17,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819642573] [2020-10-29 03:16:17,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:17,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:16:17,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658653779] [2020-10-29 03:16:17,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:16:17,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:17,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:16:17,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:16:17,269 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 25 states. [2020-10-29 03:16:18,601 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-29 03:16:19,000 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-29 03:16:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:19,546 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-10-29 03:16:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:16:19,547 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 72 [2020-10-29 03:16:19,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:19,549 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:16:19,549 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 03:16:19,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:16:19,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 03:16:19,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-10-29 03:16:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:16:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-29 03:16:19,563 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 72 [2020-10-29 03:16:19,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:19,564 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-29 03:16:19,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:16:19,564 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-29 03:16:19,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:16:19,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:19,565 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:19,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:16:19,566 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:19,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:19,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1066516045, now seen corresponding path program 10 times [2020-10-29 03:16:19,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:19,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666840349] [2020-10-29 03:16:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:19,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:19,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:21,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 03:16:24,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:16:24,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:16:24,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:16:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:16:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:16:24,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:24,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:24,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:24,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:24,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:16:24,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:24,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:24,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:16:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:24,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:24,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:24,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:24,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:24,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:24,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:16:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:24,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:24,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:24,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:24,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:16:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:24,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:24,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:24,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:24,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:16:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:24,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:24,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:16:24,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:24,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:24,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:24,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:24,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:16:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:24,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:24,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:24,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:24,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:24,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:24,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 60 proven. 36 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 03:16:24,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666840349] [2020-10-29 03:16:24,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:24,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:16:24,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384292382] [2020-10-29 03:16:24,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:16:24,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:24,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:16:24,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:16:24,933 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 17 states. [2020-10-29 03:16:25,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:25,612 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2020-10-29 03:16:25,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:16:25,615 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2020-10-29 03:16:25,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:25,618 INFO L225 Difference]: With dead ends: 142 [2020-10-29 03:16:25,618 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 03:16:25,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:16:25,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 03:16:25,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2020-10-29 03:16:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 03:16:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2020-10-29 03:16:25,640 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 80 [2020-10-29 03:16:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:25,640 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2020-10-29 03:16:25,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:16:25,640 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2020-10-29 03:16:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:16:25,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:25,641 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:25,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:16:25,641 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:25,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:25,642 INFO L82 PathProgramCache]: Analyzing trace with hash 318980535, now seen corresponding path program 11 times [2020-10-29 03:16:25,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:25,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11446771] [2020-10-29 03:16:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:25,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:29,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:30,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:30,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:16:30,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:16:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:16:30,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:30,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:16:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 03:16:30,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:32,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:32,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:32,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:32,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:32,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:32,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:32,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:32,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:32,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:32,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:32,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:32,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:32,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:16:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:32,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:32,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:32,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:32,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:32,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:32,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:32,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:32,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:32,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:16:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:32,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:32,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:32,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:32,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:32,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:32,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:32,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:32,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:16:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:32,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:32,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:32,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:32,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:32,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:32,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:32,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:32,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:16:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:32,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:32,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:32,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:32,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:32,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:32,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:32,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:32,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:16:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:32,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:32,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:32,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:32,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:32,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:32,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:32,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:32,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:32,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:32,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:32,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 10 proven. 148 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:16:32,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11446771] [2020-10-29 03:16:32,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:32,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:16:32,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202535048] [2020-10-29 03:16:32,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:16:32,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:32,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:16:32,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:16:32,738 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 28 states. [2020-10-29 03:16:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:35,326 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-10-29 03:16:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:16:35,327 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 84 [2020-10-29 03:16:35,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:35,329 INFO L225 Difference]: With dead ends: 102 [2020-10-29 03:16:35,329 INFO L226 Difference]: Without dead ends: 99 [2020-10-29 03:16:35,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=131, Invalid=1351, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:16:35,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-29 03:16:35,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2020-10-29 03:16:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:16:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2020-10-29 03:16:35,347 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 84 [2020-10-29 03:16:35,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:35,347 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2020-10-29 03:16:35,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:16:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2020-10-29 03:16:35,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 03:16:35,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:35,348 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:35,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:16:35,349 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:35,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:35,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1817698019, now seen corresponding path program 12 times [2020-10-29 03:16:35,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:35,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655719880] [2020-10-29 03:16:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:35,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:35,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:38,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:40,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:40,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:16:40,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:16:40,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 03:16:40,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:40,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:16:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:16:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 03:16:40,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:40,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:40,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:40,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:40,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:40,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:40,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:40,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:40,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:40,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:16:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:40,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:40,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:40,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:40,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:40,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:40,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:40,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:40,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:40,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:16:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:40,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:40,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:40,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:40,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:40,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:40,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:40,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:40,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:40,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:16:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:40,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:40,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:40,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:40,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:40,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:40,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:40,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:40,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:16:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:40,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:40,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:40,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:40,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:40,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:40,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:40,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:40,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:40,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:16:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:40,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:40,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:40,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:40,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:40,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:40,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:40,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:40,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:16:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:40,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:40,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:40,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:40,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:40,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:40,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:40,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 84 proven. 49 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-29 03:16:40,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655719880] [2020-10-29 03:16:40,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:40,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:16:40,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867535586] [2020-10-29 03:16:40,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:16:40,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:40,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:16:40,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:16:40,719 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 19 states. [2020-10-29 03:16:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:41,546 INFO L93 Difference]: Finished difference Result 160 states and 172 transitions. [2020-10-29 03:16:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:16:41,547 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 92 [2020-10-29 03:16:41,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:41,549 INFO L225 Difference]: With dead ends: 160 [2020-10-29 03:16:41,549 INFO L226 Difference]: Without dead ends: 107 [2020-10-29 03:16:41,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:16:41,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-29 03:16:41,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2020-10-29 03:16:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 03:16:41,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-10-29 03:16:41,566 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 92 [2020-10-29 03:16:41,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:41,567 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-10-29 03:16:41,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:16:41,567 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-10-29 03:16:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 03:16:41,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:41,568 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:41,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:16:41,568 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:41,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:41,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1671017695, now seen corresponding path program 13 times [2020-10-29 03:16:41,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:41,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657778445] [2020-10-29 03:16:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:41,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:46,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 03:16:46,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:16:46,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:16:46,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:46,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:46,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:16:46,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:16:46,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:46,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:46,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:46,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:46,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:46,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:46,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:46,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:46,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:46,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:16:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:46,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:46,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:46,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:46,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:46,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:46,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:46,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:46,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:16:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:46,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:46,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:46,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:46,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:46,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:46,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:46,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:46,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:16:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:46,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:46,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:46,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:46,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:46,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:16:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:46,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:46,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:46,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:46,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:46,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:46,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:46,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:46,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:46,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:46,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:46,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:16:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:46,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:46,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:46,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:46,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:46,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:46,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:46,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:16:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:46,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:46,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:46,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:46,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:46,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:46,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:46,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 12 proven. 64 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-29 03:16:46,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657778445] [2020-10-29 03:16:46,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:46,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:16:46,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952642716] [2020-10-29 03:16:46,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:16:46,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:46,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:16:46,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:16:46,859 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 13 states. [2020-10-29 03:16:47,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:47,401 INFO L93 Difference]: Finished difference Result 191 states and 198 transitions. [2020-10-29 03:16:47,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:16:47,402 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 96 [2020-10-29 03:16:47,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:47,404 INFO L225 Difference]: With dead ends: 191 [2020-10-29 03:16:47,404 INFO L226 Difference]: Without dead ends: 115 [2020-10-29 03:16:47,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:16:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-29 03:16:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 103. [2020-10-29 03:16:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 03:16:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2020-10-29 03:16:47,422 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 96 [2020-10-29 03:16:47,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:47,422 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2020-10-29 03:16:47,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:16:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2020-10-29 03:16:47,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:16:47,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:47,424 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:47,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:16:47,424 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:47,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:47,425 INFO L82 PathProgramCache]: Analyzing trace with hash 651223845, now seen corresponding path program 14 times [2020-10-29 03:16:47,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:47,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404333212] [2020-10-29 03:16:47,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:47,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:47,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 03:16:52,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:16:52,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 03:16:52,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:16:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:16:52,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:52,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:52,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:16:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:52,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:52,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:16:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:52,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:52,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:52,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:16:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:52,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:16:52,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:16:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:52,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:52,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:52,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:52,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:16:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:52,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:16:52,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:16:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:52,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:16:52,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:52,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 12 proven. 81 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-29 03:16:52,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404333212] [2020-10-29 03:16:52,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:52,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:16:52,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749504008] [2020-10-29 03:16:52,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:16:52,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:52,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:16:52,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:16:52,696 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 14 states. [2020-10-29 03:16:53,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:53,296 INFO L93 Difference]: Finished difference Result 201 states and 209 transitions. [2020-10-29 03:16:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:16:53,297 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-10-29 03:16:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:53,298 INFO L225 Difference]: With dead ends: 201 [2020-10-29 03:16:53,299 INFO L226 Difference]: Without dead ends: 123 [2020-10-29 03:16:53,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:16:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-29 03:16:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 107. [2020-10-29 03:16:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 03:16:53,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-10-29 03:16:53,318 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 100 [2020-10-29 03:16:53,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:53,319 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-10-29 03:16:53,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:16:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-10-29 03:16:53,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 03:16:53,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:53,320 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:53,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:16:53,321 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:53,321 INFO L82 PathProgramCache]: Analyzing trace with hash -922949335, now seen corresponding path program 15 times [2020-10-29 03:16:53,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:53,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251417227] [2020-10-29 03:16:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:53,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:53,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:58,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:16:58,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:16:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 03:16:58,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:58,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:16:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:16:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:58,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:58,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:58,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:58,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:58,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:58,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:16:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:58,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:58,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:58,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:58,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:58,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:58,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:16:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:58,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:58,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:58,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:58,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:16:58,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:58,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:58,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:58,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:16:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:58,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:58,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:58,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:58,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:16:58,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:58,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:58,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:58,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:16:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:58,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:58,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:58,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:58,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:58,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:58,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:58,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:58,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:58,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:58,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:16:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:58,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:58,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:58,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:58,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:58,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:58,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:58,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:58,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:58,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:58,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 03:16:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:58,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:58,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:58,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:58,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:58,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:16:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:58,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2020-10-29 03:16:58,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251417227] [2020-10-29 03:16:58,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:58,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:16:58,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214301139] [2020-10-29 03:16:58,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:16:58,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:58,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:16:58,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:16:58,624 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 15 states. [2020-10-29 03:16:59,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:59,308 INFO L93 Difference]: Finished difference Result 211 states and 220 transitions. [2020-10-29 03:16:59,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:16:59,309 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 104 [2020-10-29 03:16:59,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:59,310 INFO L225 Difference]: With dead ends: 211 [2020-10-29 03:16:59,310 INFO L226 Difference]: Without dead ends: 131 [2020-10-29 03:16:59,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:16:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-29 03:16:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2020-10-29 03:16:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 03:16:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2020-10-29 03:16:59,335 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 104 [2020-10-29 03:16:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:59,335 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2020-10-29 03:16:59,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:16:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2020-10-29 03:16:59,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 03:16:59,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:59,337 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:59,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:16:59,337 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:59,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:59,337 INFO L82 PathProgramCache]: Analyzing trace with hash 2004835629, now seen corresponding path program 16 times [2020-10-29 03:16:59,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:59,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742966143] [2020-10-29 03:16:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:59,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:00,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:04,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:04,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 03:17:04,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:04,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:17:04,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:04,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:17:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:17:04,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:04,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:04,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:04,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:04,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:04,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:17:04,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:04,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:04,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:04,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:17:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:04,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:04,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:04,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:04,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:04,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:04,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:04,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:04,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:04,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:17:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:04,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:04,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:04,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:04,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:04,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:04,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:04,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:04,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:04,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:04,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:04,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:17:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:04,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:04,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:04,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:04,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:04,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:04,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:04,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:17:04,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:17:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:04,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:04,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:04,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:04,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:04,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:04,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:04,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:17:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:04,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:04,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:04,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:04,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:04,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:04,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:04,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:04,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:04,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:04,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:04,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:17:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:04,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:04,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:04,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:04,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:04,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:04,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 12 proven. 121 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-29 03:17:04,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742966143] [2020-10-29 03:17:04,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:04,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:17:04,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397510190] [2020-10-29 03:17:04,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:17:04,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:04,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:17:04,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:17:04,675 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 16 states. [2020-10-29 03:17:05,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:05,424 INFO L93 Difference]: Finished difference Result 221 states and 231 transitions. [2020-10-29 03:17:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:17:05,425 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-10-29 03:17:05,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:05,426 INFO L225 Difference]: With dead ends: 221 [2020-10-29 03:17:05,426 INFO L226 Difference]: Without dead ends: 139 [2020-10-29 03:17:05,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:17:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-29 03:17:05,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 115. [2020-10-29 03:17:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 03:17:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2020-10-29 03:17:05,445 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 108 [2020-10-29 03:17:05,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:05,446 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2020-10-29 03:17:05,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:17:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2020-10-29 03:17:05,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:17:05,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:05,447 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:05,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:17:05,448 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:05,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:05,448 INFO L82 PathProgramCache]: Analyzing trace with hash 91045681, now seen corresponding path program 17 times [2020-10-29 03:17:05,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:05,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876388092] [2020-10-29 03:17:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:05,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:05,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 03:17:10,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:10,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:17:10,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:17:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:17:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:10,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:10,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:17:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:10,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:10,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:10,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:17:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:10,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:10,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:10,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:17:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:10,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:10,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:17:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:10,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:10,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:10,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 03:17:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:10,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:10,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:10,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:17:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:10,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:10,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:10,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 12 proven. 144 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-29 03:17:10,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876388092] [2020-10-29 03:17:10,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:10,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:17:10,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581355418] [2020-10-29 03:17:10,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:17:10,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:10,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:17:10,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:17:10,771 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 17 states. [2020-10-29 03:17:11,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:11,573 INFO L93 Difference]: Finished difference Result 231 states and 242 transitions. [2020-10-29 03:17:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:17:11,574 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2020-10-29 03:17:11,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:11,575 INFO L225 Difference]: With dead ends: 231 [2020-10-29 03:17:11,575 INFO L226 Difference]: Without dead ends: 147 [2020-10-29 03:17:11,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:17:11,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-29 03:17:11,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2020-10-29 03:17:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 03:17:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2020-10-29 03:17:11,595 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 112 [2020-10-29 03:17:11,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:11,595 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2020-10-29 03:17:11,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:17:11,595 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2020-10-29 03:17:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 03:17:11,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:11,596 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:11,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:17:11,597 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:11,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1537503435, now seen corresponding path program 18 times [2020-10-29 03:17:11,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:11,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159637778] [2020-10-29 03:17:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:11,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:16,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:16,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 03:17:16,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-29 03:17:16,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:16,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:17:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:17:16,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:16,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:16,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:16,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:16,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:16,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:16,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:16,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:16,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:17:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:16,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:16,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:16,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:16,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:16,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:16,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:17,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:17:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:17,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:17,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:17,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:17,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:17,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:17,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:17,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:17:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:17,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:17,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:17,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:17,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:17,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:17,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:17:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:17,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:17,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:17,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:17,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:17,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:17,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:17,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:17,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:17,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:17:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:17,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:17,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:17,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:17,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:17,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:17,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:17,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:17,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:17,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:17,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:17,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:17:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:17,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:17,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:17,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:17,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:17,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:17,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:17,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:17,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 12 proven. 169 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-29 03:17:17,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159637778] [2020-10-29 03:17:17,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:17,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:17:17,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372444422] [2020-10-29 03:17:17,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:17:17,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:17,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:17:17,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:17:17,038 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 18 states. [2020-10-29 03:17:17,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:17,953 INFO L93 Difference]: Finished difference Result 241 states and 253 transitions. [2020-10-29 03:17:17,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:17:17,958 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-29 03:17:17,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:17,959 INFO L225 Difference]: With dead ends: 241 [2020-10-29 03:17:17,959 INFO L226 Difference]: Without dead ends: 155 [2020-10-29 03:17:17,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:17:17,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-29 03:17:17,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-10-29 03:17:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-29 03:17:17,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2020-10-29 03:17:17,983 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 116 [2020-10-29 03:17:17,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:17,984 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2020-10-29 03:17:17,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:17:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2020-10-29 03:17:17,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 03:17:17,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:17,985 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:17,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:17:17,986 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:17,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:17,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1683967289, now seen corresponding path program 19 times [2020-10-29 03:17:17,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:17,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151954311] [2020-10-29 03:17:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:18,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:18,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:23,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:23,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 03:17:23,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:23,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 03:17:23,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:23,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:17:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:17:23,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:23,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:23,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:23,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:23,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:23,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:23,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:23,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:17:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:23,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:23,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:23,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:23,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:23,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:23,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:23,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:23,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:23,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:17:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:23,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:23,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:23,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:23,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:23,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:23,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:23,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:23,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:17:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:23,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:23,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:23,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:23,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:23,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:23,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:23,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 03:17:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:23,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:23,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:23,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:23,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:23,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:23,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:23,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:23,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:23,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:23,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:23,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:17:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:23,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:23,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:23,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:23,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:23,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:23,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:23,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:17:23,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 03:17:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:23,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:23,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:23,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:23,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:23,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 12 proven. 196 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2020-10-29 03:17:23,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151954311] [2020-10-29 03:17:23,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:23,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:17:23,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884257629] [2020-10-29 03:17:23,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:17:23,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:23,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:17:23,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:17:23,425 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 19 states. [2020-10-29 03:17:24,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:24,399 INFO L93 Difference]: Finished difference Result 251 states and 264 transitions. [2020-10-29 03:17:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:17:24,400 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 120 [2020-10-29 03:17:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:24,402 INFO L225 Difference]: With dead ends: 251 [2020-10-29 03:17:24,402 INFO L226 Difference]: Without dead ends: 163 [2020-10-29 03:17:24,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:17:24,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-29 03:17:24,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 127. [2020-10-29 03:17:24,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-29 03:17:24,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2020-10-29 03:17:24,419 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 120 [2020-10-29 03:17:24,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:24,419 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2020-10-29 03:17:24,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:17:24,419 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2020-10-29 03:17:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 03:17:24,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:24,420 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:24,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:17:24,421 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:24,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:24,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1274185411, now seen corresponding path program 20 times [2020-10-29 03:17:24,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:24,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184727549] [2020-10-29 03:17:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:24,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:24,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:29,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:29,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 03:17:29,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:29,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-29 03:17:29,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:29,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:17:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:17:29,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:29,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:29,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:29,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:29,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:29,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:29,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:29,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:29,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:29,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:29,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:29,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:29,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:29,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:17:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:29,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:29,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:29,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:29,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:29,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:29,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:29,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:29,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:29,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:29,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:29,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:17:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:29,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:29,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:29,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:29,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:29,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:29,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:29,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:29,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:17:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:29,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:29,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:29,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:29,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:29,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:29,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:29,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:29,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:29,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:17:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:29,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:29,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:29,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:29,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:29,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:29,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:17:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:29,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:29,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:29,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:29,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:29,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:29,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:17:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:29,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:29,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:29,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:29,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:29,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:29,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 12 proven. 225 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-29 03:17:29,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184727549] [2020-10-29 03:17:29,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:29,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:17:29,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15652671] [2020-10-29 03:17:29,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:17:29,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:29,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:17:29,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:17:29,942 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 20 states. [2020-10-29 03:17:30,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:30,925 INFO L93 Difference]: Finished difference Result 261 states and 275 transitions. [2020-10-29 03:17:30,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:17:30,926 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 124 [2020-10-29 03:17:30,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:30,928 INFO L225 Difference]: With dead ends: 261 [2020-10-29 03:17:30,928 INFO L226 Difference]: Without dead ends: 171 [2020-10-29 03:17:30,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=443, Invalid=747, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:17:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-29 03:17:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 131. [2020-10-29 03:17:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-29 03:17:30,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2020-10-29 03:17:30,945 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 124 [2020-10-29 03:17:30,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:30,945 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2020-10-29 03:17:30,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:17:30,945 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2020-10-29 03:17:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 03:17:30,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:30,946 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:30,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:17:30,946 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:30,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:30,947 INFO L82 PathProgramCache]: Analyzing trace with hash -528805055, now seen corresponding path program 21 times [2020-10-29 03:17:30,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:30,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188294175] [2020-10-29 03:17:30,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:31,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:36,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:36,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 03:17:36,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-29 03:17:36,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:36,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:17:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 03:17:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:36,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:36,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:36,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:36,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:36,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:36,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:36,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:36,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:36,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:36,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:17:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:36,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:36,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:36,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:36,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:36,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:36,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:36,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:36,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:36,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:17:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:36,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:36,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:36,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:36,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:36,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:36,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:36,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:36,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 03:17:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:36,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:36,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:36,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:36,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:36,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:36,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:36,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:36,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:36,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:17:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:36,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:36,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:36,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:36,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:36,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:36,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:36,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:36,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:36,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:36,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 03:17:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:36,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:36,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:36,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:36,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:36,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:36,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:36,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 03:17:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:36,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:36,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:36,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:36,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:36,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:36,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:36,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 12 proven. 256 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2020-10-29 03:17:36,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188294175] [2020-10-29 03:17:36,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:36,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:17:36,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920666006] [2020-10-29 03:17:36,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:17:36,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:36,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:17:36,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:17:36,495 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 21 states. [2020-10-29 03:17:37,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:37,576 INFO L93 Difference]: Finished difference Result 271 states and 286 transitions. [2020-10-29 03:17:37,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:17:37,577 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 128 [2020-10-29 03:17:37,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:37,579 INFO L225 Difference]: With dead ends: 271 [2020-10-29 03:17:37,579 INFO L226 Difference]: Without dead ends: 179 [2020-10-29 03:17:37,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:17:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-29 03:17:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 135. [2020-10-29 03:17:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 03:17:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2020-10-29 03:17:37,601 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 128 [2020-10-29 03:17:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:37,602 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2020-10-29 03:17:37,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:17:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2020-10-29 03:17:37,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 03:17:37,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:37,603 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:37,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:17:37,603 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:37,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:37,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1791157435, now seen corresponding path program 22 times [2020-10-29 03:17:37,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:37,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090615716] [2020-10-29 03:17:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:37,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:37,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:42,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:42,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 03:17:42,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:42,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 03:17:42,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:42,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:17:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 03:17:42,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:43,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:43,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:43,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:43,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:43,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:43,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:43,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:43,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:43,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:43,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:43,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:43,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:43,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:17:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:43,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:43,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:43,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:43,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:43,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:43,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:43,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:43,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:43,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:43,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:43,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:17:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:43,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:43,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:43,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:43,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:43,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:43,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:43,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:17:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:43,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:43,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:43,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:43,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:43,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:43,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:43,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:43,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:17:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:43,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:43,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:43,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:43,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:43,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:43,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:43,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:43,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:43,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:17:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:43,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:43,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:43,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:43,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:43,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:43,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:17:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:43,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:43,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:43,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:43,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:43,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:43,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:43,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 12 proven. 289 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2020-10-29 03:17:43,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090615716] [2020-10-29 03:17:43,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:43,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:17:43,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380126805] [2020-10-29 03:17:43,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:17:43,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:43,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:17:43,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:17:43,145 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 22 states. [2020-10-29 03:17:44,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:44,379 INFO L93 Difference]: Finished difference Result 281 states and 297 transitions. [2020-10-29 03:17:44,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:17:44,380 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 132 [2020-10-29 03:17:44,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:44,382 INFO L225 Difference]: With dead ends: 281 [2020-10-29 03:17:44,382 INFO L226 Difference]: Without dead ends: 187 [2020-10-29 03:17:44,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:17:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-29 03:17:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2020-10-29 03:17:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-29 03:17:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2020-10-29 03:17:44,406 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 132 [2020-10-29 03:17:44,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:44,406 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2020-10-29 03:17:44,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:17:44,407 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2020-10-29 03:17:44,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 03:17:44,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:44,408 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:44,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:17:44,408 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:44,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:44,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1550356809, now seen corresponding path program 23 times [2020-10-29 03:17:44,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:44,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708154903] [2020-10-29 03:17:44,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:44,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:44,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:49,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 03:17:49,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:49,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 03:17:49,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:49,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:17:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 03:17:49,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:49,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:49,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:49,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:49,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:49,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:17:49,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:49,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:49,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:49,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:17:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:49,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:49,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:49,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:49,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:49,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:49,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:49,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 03:17:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:49,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:49,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:49,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:49,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:49,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:49,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:49,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:17:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:49,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:49,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:49,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:49,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:49,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 03:17:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:49,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:49,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:49,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:49,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:49,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:49,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:49,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 03:17:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:49,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:49,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:49,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:49,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:49,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:49,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:49,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:49,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:49,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:17:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:49,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:49,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:49,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:49,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:49,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 12 proven. 324 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-29 03:17:49,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708154903] [2020-10-29 03:17:49,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:49,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:17:49,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879076502] [2020-10-29 03:17:49,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:17:49,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:49,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:17:49,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:17:49,994 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 23 states. [2020-10-29 03:17:51,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:51,224 INFO L93 Difference]: Finished difference Result 291 states and 308 transitions. [2020-10-29 03:17:51,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:17:51,225 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 136 [2020-10-29 03:17:51,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:51,227 INFO L225 Difference]: With dead ends: 291 [2020-10-29 03:17:51,227 INFO L226 Difference]: Without dead ends: 195 [2020-10-29 03:17:51,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=632, Invalid=1090, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:17:51,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-29 03:17:51,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143. [2020-10-29 03:17:51,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 03:17:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2020-10-29 03:17:51,251 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 136 [2020-10-29 03:17:51,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:51,251 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2020-10-29 03:17:51,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:17:51,251 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2020-10-29 03:17:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 03:17:51,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:51,252 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:51,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:17:51,253 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:51,253 INFO L82 PathProgramCache]: Analyzing trace with hash 512914765, now seen corresponding path program 24 times [2020-10-29 03:17:51,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:51,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505845661] [2020-10-29 03:17:51,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:51,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:51,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:56,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:56,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 03:17:56,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:56,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 03:17:56,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:56,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:17:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 03:17:56,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:56,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:56,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:56,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:56,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:56,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:56,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:56,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:56,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:56,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:17:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:56,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:56,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:56,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:56,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:56,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:56,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:56,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:17:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:56,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:56,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:56,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:56,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:56,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:56,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:56,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:17:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:56,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:56,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:56,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:56,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:56,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:56,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:56,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:56,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:17:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:56,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:56,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:56,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:56,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:17:56,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:56,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:56,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:56,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:17:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:56,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:56,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:56,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:56,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:56,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:56,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:56,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:56,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:17:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 03:17:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:56,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:56,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:56,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:56,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:56,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:17:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:56,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:56,864 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 12 proven. 361 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2020-10-29 03:17:56,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505845661] [2020-10-29 03:17:56,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:56,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:17:56,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715867390] [2020-10-29 03:17:56,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:17:56,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:56,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:17:56,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:17:56,866 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 24 states. [2020-10-29 03:17:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:58,131 INFO L93 Difference]: Finished difference Result 301 states and 319 transitions. [2020-10-29 03:17:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:17:58,132 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 140 [2020-10-29 03:17:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:58,134 INFO L225 Difference]: With dead ends: 301 [2020-10-29 03:17:58,134 INFO L226 Difference]: Without dead ends: 203 [2020-10-29 03:17:58,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:17:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-29 03:17:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 147. [2020-10-29 03:17:58,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-29 03:17:58,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2020-10-29 03:17:58,169 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 140 [2020-10-29 03:17:58,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:58,169 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2020-10-29 03:17:58,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:17:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2020-10-29 03:17:58,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 03:17:58,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:58,171 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:58,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:17:58,171 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:58,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:58,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1563441327, now seen corresponding path program 25 times [2020-10-29 03:17:58,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:58,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657544930] [2020-10-29 03:17:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:58,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:58,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:03,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:03,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 03:18:03,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:03,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5259 [2020-10-29 03:18:03,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:03,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:18:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 03:18:03,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:03,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:03,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:03,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:03,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:03,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:03,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:18:03,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:03,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:03,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:03,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:03,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:03,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:03,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 03:18:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:03,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:03,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:03,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:03,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:03,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:03,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:03,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:03,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:03,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:03,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:03,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:03,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:18:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:03,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:03,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:03,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:03,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:18:03,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:03,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:03,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:03,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:03,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 03:18:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:03,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:03,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:03,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:03,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:03,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:03,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 03:18:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:03,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:03,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:03,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:03,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:03,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:03,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:03,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:03,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:03,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:18:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:03,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:03,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:03,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:03,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:03,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:03,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:03,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:03,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:03,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 03:18:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:03,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:03,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:03,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:03,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:03,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:03,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:03,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:03,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 12 proven. 400 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-10-29 03:18:04,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657544930] [2020-10-29 03:18:04,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:04,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:18:04,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485261351] [2020-10-29 03:18:04,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:18:04,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:04,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:18:04,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:18:04,015 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 25 states. [2020-10-29 03:18:05,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:05,422 INFO L93 Difference]: Finished difference Result 311 states and 330 transitions. [2020-10-29 03:18:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:18:05,423 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 144 [2020-10-29 03:18:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:05,425 INFO L225 Difference]: With dead ends: 311 [2020-10-29 03:18:05,426 INFO L226 Difference]: Without dead ends: 211 [2020-10-29 03:18:05,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:18:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-29 03:18:05,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 151. [2020-10-29 03:18:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 03:18:05,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2020-10-29 03:18:05,452 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 144 [2020-10-29 03:18:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:05,452 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2020-10-29 03:18:05,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:18:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2020-10-29 03:18:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 03:18:05,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:05,453 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:05,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:18:05,454 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:05,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:05,454 INFO L82 PathProgramCache]: Analyzing trace with hash 246777685, now seen corresponding path program 26 times [2020-10-29 03:18:05,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:05,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681344590] [2020-10-29 03:18:05,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:10,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:10,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 03:18:10,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-29 03:18:10,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:10,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:18:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 03:18:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:11,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:11,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:11,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:11,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:11,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:18:11,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:11,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:11,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:18:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:11,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:11,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:11,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:11,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:11,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:11,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:11,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:11,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:11,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:11,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:11,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:11,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:18:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:11,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:11,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:11,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:11,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:11,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:11,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:11,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:11,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:11,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:11,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:11,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:11,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:18:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:11,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:11,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:11,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:11,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:11,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:11,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:11,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:11,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:11,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:11,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:11,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:11,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:18:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:11,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:11,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:11,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:11,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:11,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:11,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:11,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:11,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:11,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:11,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:11,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 03:18:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:11,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:11,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:11,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:11,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:11,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:11,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:11,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:11,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:11,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:11,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:11,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:11,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 03:18:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:11,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:11,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:11,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:11,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:11,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:11,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:11,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:11,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:11,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:11,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:11,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 12 proven. 441 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2020-10-29 03:18:11,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681344590] [2020-10-29 03:18:11,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:11,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:18:11,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13679671] [2020-10-29 03:18:11,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:18:11,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:11,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:18:11,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:18:11,242 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 26 states. [2020-10-29 03:18:12,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:12,818 INFO L93 Difference]: Finished difference Result 321 states and 341 transitions. [2020-10-29 03:18:12,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:18:12,820 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 148 [2020-10-29 03:18:12,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:12,822 INFO L225 Difference]: With dead ends: 321 [2020-10-29 03:18:12,822 INFO L226 Difference]: Without dead ends: 219 [2020-10-29 03:18:12,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=830, Invalid=1426, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:18:12,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-29 03:18:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 155. [2020-10-29 03:18:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-29 03:18:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2020-10-29 03:18:12,847 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 148 [2020-10-29 03:18:12,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:12,848 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2020-10-29 03:18:12,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:18:12,848 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2020-10-29 03:18:12,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 03:18:12,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:12,849 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:12,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:18:12,849 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:12,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:12,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1717089625, now seen corresponding path program 27 times [2020-10-29 03:18:12,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:12,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562864082] [2020-10-29 03:18:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:12,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 03:18:18,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5265 [2020-10-29 03:18:18,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:18:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 03:18:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:18,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:18:18,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:18,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:18:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:18,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:18,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:18,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:18,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:18,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 03:18:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:18,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:18,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:18,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:18,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:18,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 03:18:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:18,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:18,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:18,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:18,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:18:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:18,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:18,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:18,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:18,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:18,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 03:18:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:18,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:18,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:18,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:18,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 03:18:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:18,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:18,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:18,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:18,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 12 proven. 484 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2020-10-29 03:18:18,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562864082] [2020-10-29 03:18:18,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:18,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:18:18,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626413321] [2020-10-29 03:18:18,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:18:18,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:18,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:18:18,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:18:18,832 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 27 states. [2020-10-29 03:18:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:20,462 INFO L93 Difference]: Finished difference Result 331 states and 352 transitions. [2020-10-29 03:18:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:18:20,463 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 152 [2020-10-29 03:18:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:20,465 INFO L225 Difference]: With dead ends: 331 [2020-10-29 03:18:20,465 INFO L226 Difference]: Without dead ends: 227 [2020-10-29 03:18:20,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:18:20,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-29 03:18:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 159. [2020-10-29 03:18:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-29 03:18:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2020-10-29 03:18:20,486 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 152 [2020-10-29 03:18:20,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:20,486 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2020-10-29 03:18:20,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:18:20,486 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2020-10-29 03:18:20,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 03:18:20,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:20,487 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:20,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:18:20,488 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:20,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:20,488 INFO L82 PathProgramCache]: Analyzing trace with hash 206459229, now seen corresponding path program 28 times [2020-10-29 03:18:20,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:20,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144896950] [2020-10-29 03:18:20,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:25,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:25,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 03:18:25,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:18:25,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:25,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:18:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 03:18:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:26,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:26,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:26,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:26,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:26,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:26,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:26,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:26,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:18:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:26,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:26,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:26,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:26,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:26,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:26,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:26,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:26,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:26,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:26,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:18:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:26,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:26,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:26,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:26,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:26,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:26,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:26,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:26,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:18:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:26,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:26,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:26,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:26,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:26,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:26,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:26,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:26,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:26,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 03:18:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:26,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:26,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:26,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:26,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:26,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:26,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:26,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:26,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 03:18:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:26,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:26,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:26,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:26,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:26,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:26,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:26,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-29 03:18:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:26,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:26,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:26,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:26,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:26,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:26,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:26,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:26,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 12 proven. 529 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2020-10-29 03:18:26,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144896950] [2020-10-29 03:18:26,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:26,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:18:26,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19045432] [2020-10-29 03:18:26,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:18:26,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:26,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:18:26,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:18:26,232 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 28 states. [2020-10-29 03:18:28,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:28,069 INFO L93 Difference]: Finished difference Result 341 states and 363 transitions. [2020-10-29 03:18:28,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:18:28,070 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 156 [2020-10-29 03:18:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:28,072 INFO L225 Difference]: With dead ends: 341 [2020-10-29 03:18:28,072 INFO L226 Difference]: Without dead ends: 235 [2020-10-29 03:18:28,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=977, Invalid=1675, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:18:28,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-29 03:18:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 163. [2020-10-29 03:18:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-29 03:18:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2020-10-29 03:18:28,100 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 156 [2020-10-29 03:18:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:28,100 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2020-10-29 03:18:28,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:18:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2020-10-29 03:18:28,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 03:18:28,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:28,102 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:28,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:18:28,102 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:28,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:28,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1101749089, now seen corresponding path program 29 times [2020-10-29 03:18:28,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:28,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818736898] [2020-10-29 03:18:28,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:28,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:34,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:34,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 03:18:34,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:34,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6244 [2020-10-29 03:18:34,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:34,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:18:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 03:18:34,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:35,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:35,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:35,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:35,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:35,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:35,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:35,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:35,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 03:18:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:35,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:35,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:35,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:35,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:35,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:35,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:35,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:35,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:35,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:35,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:35,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 03:18:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:35,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:35,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:35,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:35,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:35,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:35,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:35,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:35,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:18:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:35,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:35,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:35,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:35,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:35,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:35,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:35,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:35,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:35,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 03:18:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:35,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:35,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:35,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:35,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:35,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 03:18:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:35,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:35,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:35,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:35,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:35,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:35,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:35,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:35,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 03:18:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:35,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:35,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:35,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:35,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:35,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:35,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:35,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 12 proven. 576 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2020-10-29 03:18:35,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818736898] [2020-10-29 03:18:35,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:35,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:18:35,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455404898] [2020-10-29 03:18:35,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:18:35,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:35,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:18:35,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=456, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:18:35,138 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 29 states. [2020-10-29 03:18:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:36,915 INFO L93 Difference]: Finished difference Result 351 states and 374 transitions. [2020-10-29 03:18:36,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:18:36,916 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 160 [2020-10-29 03:18:36,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:36,918 INFO L225 Difference]: With dead ends: 351 [2020-10-29 03:18:36,918 INFO L226 Difference]: Without dead ends: 243 [2020-10-29 03:18:36,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1028, Invalid=1728, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:18:36,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-29 03:18:36,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 167. [2020-10-29 03:18:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-29 03:18:36,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2020-10-29 03:18:36,947 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 160 [2020-10-29 03:18:36,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:36,947 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2020-10-29 03:18:36,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:18:36,947 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2020-10-29 03:18:36,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 03:18:36,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:36,948 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:36,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:18:36,949 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:36,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:36,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1509633179, now seen corresponding path program 30 times [2020-10-29 03:18:36,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:36,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691363065] [2020-10-29 03:18:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:37,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:49,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:49,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 03:18:49,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:49,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12177 [2020-10-29 03:18:49,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:49,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:18:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:49,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 03:18:49,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:49,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:49,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:49,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:49,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:49,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:49,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:49,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:18:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:49,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:49,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:49,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:49,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:49,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:49,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:49,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:18:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:49,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:49,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:49,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:49,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:49,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:49,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:49,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:49,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:49,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:49,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:49,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:49,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 03:18:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:49,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:49,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:49,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:49,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:49,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:49,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:49,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:49,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:49,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 03:18:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:49,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:49,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:49,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:49,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:49,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:49,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:49,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:49,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:49,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:49,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-29 03:18:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:49,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:49,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:49,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:49,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:49,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:49,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:49,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:49,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:49,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-29 03:18:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:49,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:49,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:49,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:49,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:49,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:49,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:49,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 12 proven. 625 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2020-10-29 03:18:50,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691363065] [2020-10-29 03:18:50,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:50,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:18:50,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296702363] [2020-10-29 03:18:50,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:18:50,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:50,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:18:50,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:18:50,012 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 30 states. [2020-10-29 03:18:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:52,115 INFO L93 Difference]: Finished difference Result 361 states and 385 transitions. [2020-10-29 03:18:52,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:18:52,116 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 164 [2020-10-29 03:18:52,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:52,117 INFO L225 Difference]: With dead ends: 361 [2020-10-29 03:18:52,118 INFO L226 Difference]: Without dead ends: 251 [2020-10-29 03:18:52,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1136, Invalid=1944, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:18:52,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-29 03:18:52,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 171. [2020-10-29 03:18:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-29 03:18:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2020-10-29 03:18:52,150 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 164 [2020-10-29 03:18:52,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:52,151 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2020-10-29 03:18:52,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:18:52,151 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2020-10-29 03:18:52,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 03:18:52,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:52,152 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:52,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:18:52,153 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:52,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:52,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1217414807, now seen corresponding path program 31 times [2020-10-29 03:18:52,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:52,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049525183] [2020-10-29 03:18:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:52,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:57,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:57,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-29 03:18:57,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:57,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 03:18:57,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:57,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:18:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 03:18:57,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:58,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:58,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:58,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:58,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:58,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:58,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:58,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:58,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:58,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:58,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:58,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:58,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:58,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 03:18:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:58,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:58,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:58,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:58,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:58,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:58,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:58,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:58,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:58,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:58,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:58,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:58,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:18:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:58,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:58,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:58,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:58,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:58,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:58,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:58,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:58,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 03:18:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:58,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:58,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:58,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:58,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:58,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:58,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:58,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 03:18:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:58,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:58,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:58,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:58,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:58,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:58,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:58,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:58,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:58,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:58,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:58,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:58,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 03:18:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:58,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:58,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:58,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:58,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:58,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:18:58,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:58,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:58,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:58,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:58,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:58,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:58,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 03:18:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:58,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:58,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:58,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:58,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:58,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:58,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:58,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:18:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:58,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:58,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 12 proven. 676 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2020-10-29 03:18:58,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049525183] [2020-10-29 03:18:58,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:58,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:18:58,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658360233] [2020-10-29 03:18:58,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:18:58,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:58,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:18:58,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:18:58,109 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 31 states. [2020-10-29 03:19:00,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:00,331 INFO L93 Difference]: Finished difference Result 371 states and 396 transitions. [2020-10-29 03:19:00,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:19:00,333 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 168 [2020-10-29 03:19:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:00,335 INFO L225 Difference]: With dead ends: 371 [2020-10-29 03:19:00,335 INFO L226 Difference]: Without dead ends: 259 [2020-10-29 03:19:00,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1220, Invalid=2086, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:19:00,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-29 03:19:00,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 175. [2020-10-29 03:19:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-29 03:19:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2020-10-29 03:19:00,365 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 168 [2020-10-29 03:19:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:00,365 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2020-10-29 03:19:00,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:19:00,365 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2020-10-29 03:19:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 03:19:00,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:00,366 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:00,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:19:00,367 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:00,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1384189293, now seen corresponding path program 32 times [2020-10-29 03:19:00,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:00,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683405193] [2020-10-29 03:19:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:00,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:00,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:05,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:05,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 03:19:05,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:19:05,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:05,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:19:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:19:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 03:19:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:06,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:06,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:06,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:19:06,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:06,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:06,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:19:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:06,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:06,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:19:06,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:06,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:19:06,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:06,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:19:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:06,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:06,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 03:19:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:06,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:06,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:19:06,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:19:06,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:06,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:19:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 03:19:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:06,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:19:06,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:06,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:19:06,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:06,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:19:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:06,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-29 03:19:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:06,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:19:06,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:19:06,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:06,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:19:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-29 03:19:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:06,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:06,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:19:06,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:19:06,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:06,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:19:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:06,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:06,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-29 03:19:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:06,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:06,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:06,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:19:06,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:19:06,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:06,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:19:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 12 proven. 729 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2020-10-29 03:19:06,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683405193] [2020-10-29 03:19:06,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:06,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:19:06,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566639017] [2020-10-29 03:19:06,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:19:06,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:06,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:19:06,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=552, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:19:06,374 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 32 states.