/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:14:34,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:14:34,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:14:34,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:14:34,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:14:34,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:14:34,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:14:34,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:14:34,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:14:34,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:14:34,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:14:34,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:14:34,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:14:34,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:14:34,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:14:34,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:14:34,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:14:34,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:14:34,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:14:34,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:14:34,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:14:34,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:14:34,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:14:34,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:14:34,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:14:34,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:14:34,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:14:34,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:14:34,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:14:34,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-25 02:14:34,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:14:34,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:14:34,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:14:34,743 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 [2020-09-25 02:14:34,787 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:14:34,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:14:34,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:14:34,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:14:34,790 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:14:34,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:14:34,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:14:34,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:14:34,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:14:34,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:14:34,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:14:34,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:14:34,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:14:34,794 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:14:34,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:14:34,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:14:34,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:14:34,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:14:34,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:14:34,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:14:34,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:14:34,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:14:34,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:14:34,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:14:34,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:14:34,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:14:34,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:14:34,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:14:34,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:14:34,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=true; [2020-09-25 02:14:35,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:14:35,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:14:35,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:14:35,350 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:14:35,351 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:14:35,352 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 02:14:35,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ca885fe6/82f305ceee3746088135489877fa3d3e/FLAGc9fa1bbd3 [2020-09-25 02:14:36,121 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:14:36,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 02:14:36,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ca885fe6/82f305ceee3746088135489877fa3d3e/FLAGc9fa1bbd3 [2020-09-25 02:14:36,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ca885fe6/82f305ceee3746088135489877fa3d3e [2020-09-25 02:14:36,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:14:36,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:14:36,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:14:36,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:14:36,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:14:36,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:14:36" (1/1) ... [2020-09-25 02:14:36,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:36, skipping insertion in model container [2020-09-25 02:14:36,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:14:36" (1/1) ... [2020-09-25 02:14:36,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:14:36,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:14:36,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:14:36,961 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:14:37,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:14:37,211 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:14:37,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:37 WrapperNode [2020-09-25 02:14:37,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:14:37,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:14:37,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:14:37,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:14:37,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:37" (1/1) ... [2020-09-25 02:14:37,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:37" (1/1) ... [2020-09-25 02:14:37,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:37" (1/1) ... [2020-09-25 02:14:37,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:37" (1/1) ... [2020-09-25 02:14:37,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:37" (1/1) ... [2020-09-25 02:14:37,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:37" (1/1) ... [2020-09-25 02:14:37,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:37" (1/1) ... [2020-09-25 02:14:37,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:14:37,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:14:37,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:14:37,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:14:37,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:37" (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 [2020-09-25 02:14:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:14:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:14:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 02:14:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:14:37,450 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 02:14:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:14:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:14:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:14:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:14:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:14:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:14:39,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:14:39,051 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:14:39,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:14:39 BoogieIcfgContainer [2020-09-25 02:14:39,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:14:39,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:14:39,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:14:39,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:14:39,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:14:36" (1/3) ... [2020-09-25 02:14:39,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:14:39, skipping insertion in model container [2020-09-25 02:14:39,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:37" (2/3) ... [2020-09-25 02:14:39,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:14:39, skipping insertion in model container [2020-09-25 02:14:39,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:14:39" (3/3) ... [2020-09-25 02:14:39,079 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label36.c [2020-09-25 02:14:39,091 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:14:39,104 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:14:39,130 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:14:39,168 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:14:39,168 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:14:39,168 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:14:39,168 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:14:39,168 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:14:39,169 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:14:39,169 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:14:39,169 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:14:39,202 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 02:14:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 02:14:39,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:39,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:14:39,216 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:39,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:39,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2108492313, now seen corresponding path program 1 times [2020-09-25 02:14:39,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:39,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 02:14:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:39,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:39,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:40,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:40,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 02:14:40,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:14:40,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-09-25 02:14:40,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:40,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:14:40,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 02:14:40,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 02:14:40,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:14:40,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:14:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:40,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:40,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:14:40,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 02:14:40,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:14:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:14:40,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:14:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:14:40,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 02:14:40,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:14:40,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:14:40,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338321773] [2020-09-25 02:14:40,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:14:40,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:14:40,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:14:40,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:14:40,536 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 02:14:42,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:14:42,690 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 02:14:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:14:42,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-25 02:14:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:14:42,717 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 02:14:42,717 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 02:14:42,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:14:42,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 02:14:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 02:14:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 02:14:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 02:14:42,845 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 58 [2020-09-25 02:14:42,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:14:42,846 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 02:14:42,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:14:42,846 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 02:14:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 02:14:42,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:42,855 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:14:42,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:14:42,855 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:42,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:42,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1346618775, now seen corresponding path program 1 times [2020-09-25 02:14:42,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:42,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854178183] [2020-09-25 02:14:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:42,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:43,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:43,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:43,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:43,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:43,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:47,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:47,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 02:14:47,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:14:47,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4360 [2020-09-25 02:14:47,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:47,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:14:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 02:14:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:14:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:14:47,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:14:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:47,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:47,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:47,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:14:47,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:14:47,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:14:47,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:47,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:14:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:14:47,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:14:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:47,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:47,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:47,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 02:14:47,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:47,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 02:14:47,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:14:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 02:14:47,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:14:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:14:47,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854178183] [2020-09-25 02:14:47,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:14:47,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:14:47,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751834803] [2020-09-25 02:14:47,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:14:47,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:14:47,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:14:47,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:14:47,538 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 02:14:49,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:14:49,169 INFO L93 Difference]: Finished difference Result 1247 states and 1529 transitions. [2020-09-25 02:14:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:14:49,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 02:14:49,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:14:49,180 INFO L225 Difference]: With dead ends: 1247 [2020-09-25 02:14:49,181 INFO L226 Difference]: Without dead ends: 717 [2020-09-25 02:14:49,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:14:49,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-09-25 02:14:49,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 697. [2020-09-25 02:14:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 02:14:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 854 transitions. [2020-09-25 02:14:49,249 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 854 transitions. Word has length 137 [2020-09-25 02:14:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:14:49,251 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 854 transitions. [2020-09-25 02:14:49,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:14:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 854 transitions. [2020-09-25 02:14:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 02:14:49,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:49,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:14:49,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:14:49,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:49,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:49,256 INFO L82 PathProgramCache]: Analyzing trace with hash -336592254, now seen corresponding path program 1 times [2020-09-25 02:14:49,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:49,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612056431] [2020-09-25 02:14:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:49,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:49,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:49,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:51,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:54,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:54,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 02:14:54,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:14:54,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4780 [2020-09-25 02:14:54,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:14:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 02:14:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:14:54,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:14:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:14:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:54,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:54,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:14:54,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:54,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:14:54,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:14:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:14:54,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:14:54,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:14:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:54,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:54,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:54,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 02:14:54,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 02:14:54,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:14:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 02:14:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:14:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:14:54,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612056431] [2020-09-25 02:14:54,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:14:54,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:14:54,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566218138] [2020-09-25 02:14:54,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:14:54,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:14:54,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:14:54,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:14:54,401 INFO L87 Difference]: Start difference. First operand 697 states and 854 transitions. Second operand 5 states. [2020-09-25 02:14:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:14:56,318 INFO L93 Difference]: Finished difference Result 1561 states and 1967 transitions. [2020-09-25 02:14:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:14:56,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-25 02:14:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:14:56,325 INFO L225 Difference]: With dead ends: 1561 [2020-09-25 02:14:56,325 INFO L226 Difference]: Without dead ends: 879 [2020-09-25 02:14:56,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:14:56,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-09-25 02:14:56,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 849. [2020-09-25 02:14:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 02:14:56,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1027 transitions. [2020-09-25 02:14:56,362 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1027 transitions. Word has length 144 [2020-09-25 02:14:56,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:14:56,364 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1027 transitions. [2020-09-25 02:14:56,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:14:56,364 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1027 transitions. [2020-09-25 02:14:56,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 02:14:56,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:56,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:14:56,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:14:56,369 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:56,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:56,369 INFO L82 PathProgramCache]: Analyzing trace with hash 379726532, now seen corresponding path program 1 times [2020-09-25 02:14:56,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:56,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428423033] [2020-09-25 02:14:56,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:56,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:57,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:01,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:01,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 02:15:01,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:15:01,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4636 [2020-09-25 02:15:01,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:01,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:01,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 02:15:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:15:01,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:15:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:01,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:01,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:01,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:15:01,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:01,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:15:01,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:01,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:01,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:01,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:01,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:01,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:15:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:01,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:01,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 02:15:01,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:01,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 02:15:01,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:15:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 02:15:01,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:15:01,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428423033] [2020-09-25 02:15:01,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:15:01,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:15:01,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426451307] [2020-09-25 02:15:01,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:15:01,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:15:01,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:15:01,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:15:01,389 INFO L87 Difference]: Start difference. First operand 849 states and 1027 transitions. Second operand 5 states. [2020-09-25 02:15:03,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:15:03,398 INFO L93 Difference]: Finished difference Result 2349 states and 2924 transitions. [2020-09-25 02:15:03,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:15:03,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 02:15:03,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:15:03,411 INFO L225 Difference]: With dead ends: 2349 [2020-09-25 02:15:03,411 INFO L226 Difference]: Without dead ends: 1515 [2020-09-25 02:15:03,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:15:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-09-25 02:15:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1484. [2020-09-25 02:15:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1484 states. [2020-09-25 02:15:03,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 1773 transitions. [2020-09-25 02:15:03,477 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 1773 transitions. Word has length 154 [2020-09-25 02:15:03,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:15:03,477 INFO L479 AbstractCegarLoop]: Abstraction has 1484 states and 1773 transitions. [2020-09-25 02:15:03,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:15:03,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 1773 transitions. [2020-09-25 02:15:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 02:15:03,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:15:03,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:15:03,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:15:03,483 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:15:03,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:15:03,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1252913617, now seen corresponding path program 1 times [2020-09-25 02:15:03,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:15:03,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125173955] [2020-09-25 02:15:03,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:15:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:03,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:03,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:04,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:04,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 02:15:04,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:15:04,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1421 [2020-09-25 02:15:04,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-09-25 02:15:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:15:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:05,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:15:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:05,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:05,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:05,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:15:05,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:05,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:15:05,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:05,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:05,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:15:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:05,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:05,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:05,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 02:15:05,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:05,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 02:15:05,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:15:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 02:15:05,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:15:05,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125173955] [2020-09-25 02:15:05,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:15:05,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:15:05,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002580596] [2020-09-25 02:15:05,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:15:05,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:15:05,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:15:05,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:15:05,233 INFO L87 Difference]: Start difference. First operand 1484 states and 1773 transitions. Second operand 5 states. [2020-09-25 02:15:07,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:15:07,010 INFO L93 Difference]: Finished difference Result 3571 states and 4395 transitions. [2020-09-25 02:15:07,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:15:07,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-25 02:15:07,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:15:07,023 INFO L225 Difference]: With dead ends: 3571 [2020-09-25 02:15:07,024 INFO L226 Difference]: Without dead ends: 2102 [2020-09-25 02:15:07,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:15:07,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2020-09-25 02:15:07,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 1942. [2020-09-25 02:15:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1942 states. [2020-09-25 02:15:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2339 transitions. [2020-09-25 02:15:07,101 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2339 transitions. Word has length 163 [2020-09-25 02:15:07,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:15:07,103 INFO L479 AbstractCegarLoop]: Abstraction has 1942 states and 2339 transitions. [2020-09-25 02:15:07,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:15:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2339 transitions. [2020-09-25 02:15:07,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 02:15:07,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:15:07,114 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:15:07,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:15:07,114 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:15:07,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:15:07,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1947162266, now seen corresponding path program 1 times [2020-09-25 02:15:07,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:15:07,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245161716] [2020-09-25 02:15:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:15:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:07,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:07,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:12,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:12,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-25 02:15:12,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:15:12,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 02:15:12,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-25 02:15:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:15:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:15:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:12,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:12,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:12,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:15:12,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:12,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:15:12,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:12,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:12,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:12,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:12,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:12,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:15:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:12,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:12,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:12,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 02:15:12,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:12,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 02:15:12,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:12,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:12,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:12,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:12,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 02:15:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:12,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:12,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:12,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 02:15:12,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:12,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 02:15:12,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:15:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:15:12,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-09-25 02:15:12,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245161716] [2020-09-25 02:15:12,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:15:12,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:15:12,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666385401] [2020-09-25 02:15:12,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:15:12,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:15:12,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:15:12,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:15:12,546 INFO L87 Difference]: Start difference. First operand 1942 states and 2339 transitions. Second operand 5 states. [2020-09-25 02:15:14,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:15:14,371 INFO L93 Difference]: Finished difference Result 4335 states and 5331 transitions. [2020-09-25 02:15:14,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:15:14,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-09-25 02:15:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:15:14,383 INFO L225 Difference]: With dead ends: 4335 [2020-09-25 02:15:14,383 INFO L226 Difference]: Without dead ends: 1918 [2020-09-25 02:15:14,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:15:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2020-09-25 02:15:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1908. [2020-09-25 02:15:14,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1908 states. [2020-09-25 02:15:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2260 transitions. [2020-09-25 02:15:14,445 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2260 transitions. Word has length 261 [2020-09-25 02:15:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:15:14,446 INFO L479 AbstractCegarLoop]: Abstraction has 1908 states and 2260 transitions. [2020-09-25 02:15:14,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:15:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2260 transitions. [2020-09-25 02:15:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-09-25 02:15:14,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:15:14,457 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:15:14,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:15:14,457 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:15:14,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:15:14,458 INFO L82 PathProgramCache]: Analyzing trace with hash -2095812515, now seen corresponding path program 1 times [2020-09-25 02:15:14,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:15:14,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865369046] [2020-09-25 02:15:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:15:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:14,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:14,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:14,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:19,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:19,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:19,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:19,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:19,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-09-25 02:15:19,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:15:19,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 02:15:19,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 02:15:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 02:15:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:19,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:15:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:19,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:19,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:19,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:15:19,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:19,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:15:19,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:19,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:19,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:19,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:15:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:19,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:19,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 02:15:19,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:19,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 02:15:19,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:19,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:15:19,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:19,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 02:15:19,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:19,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 02:15:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:19,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:19,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:19,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 02:15:19,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 02:15:19,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:15:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:15:19,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:19,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-09-25 02:15:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:20,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:20,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:20,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 02:15:20,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:20,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 02:15:20,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 02:15:20,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:20,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3