/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 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=BIGGEST --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 -i ../../../trunk/examples/svcomp/array-crafted/zero_sum4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:39:12,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:39:12,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:39:12,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:39:12,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:39:12,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:39:12,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:39:12,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:39:12,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:39:12,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:39:12,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:39:12,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:39:12,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:39:12,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:39:12,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:39:12,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:39:12,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:39:12,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:39:12,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:39:12,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:39:12,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:39:12,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:39:12,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:39:12,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:39:12,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:39:12,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:39:12,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:39:12,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:39:12,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:39:12,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:39:12,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:39:12,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:39:12,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:39:12,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:39:12,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:39:12,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:39:12,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:39:12,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:39:12,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:39:12,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:39:12,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:39:12,937 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 [2020-10-12 09:39:12,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:39:12,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:39:12,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:39:12,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:39:12,978 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:39:12,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:39:12,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:39:12,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:39:12,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:39:12,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:39:12,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:39:12,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:39:12,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:39:12,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:39:12,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:39:12,982 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:39:12,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:39:12,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:39:12,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:39:12,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:39:12,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:39:12,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:39:12,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:39:12,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:39:12,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:39:12,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:39:12,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:39:12,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:39:12,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:39:12,986 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 -> 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 09:39:13,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:39:13,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:39:13,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:39:13,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:39:13,298 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:39:13,299 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum4.c [2020-10-12 09:39:13,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c562f63c/6415cb6037424ccb870e37fb4e08d959/FLAGd4ddd1b49 [2020-10-12 09:39:13,830 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:39:13,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum4.c [2020-10-12 09:39:13,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c562f63c/6415cb6037424ccb870e37fb4e08d959/FLAGd4ddd1b49 [2020-10-12 09:39:14,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c562f63c/6415cb6037424ccb870e37fb4e08d959 [2020-10-12 09:39:14,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:39:14,173 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:39:14,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:39:14,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:39:14,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:39:14,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:39:14" (1/1) ... [2020-10-12 09:39:14,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@144c4f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:14, skipping insertion in model container [2020-10-12 09:39:14,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:39:14" (1/1) ... [2020-10-12 09:39:14,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:39:14,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:39:14,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:39:14,462 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:39:14,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:39:14,521 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:39:14,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:14 WrapperNode [2020-10-12 09:39:14,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:39:14,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:39:14,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:39:14,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:39:14,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:14" (1/1) ... [2020-10-12 09:39:14,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:14" (1/1) ... [2020-10-12 09:39:14,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:14" (1/1) ... [2020-10-12 09:39:14,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:14" (1/1) ... [2020-10-12 09:39:14,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:14" (1/1) ... [2020-10-12 09:39:14,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:14" (1/1) ... [2020-10-12 09:39:14,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:14" (1/1) ... [2020-10-12 09:39:14,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:39:14,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:39:14,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:39:14,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:39:14,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:14" (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 [2020-10-12 09:39:14,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:39:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:39:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 09:39:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 09:39:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:39:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:39:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 09:39:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 09:39:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 09:39:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-12 09:39:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:39:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 09:39:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:39:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:39:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:39:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:39:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:39:15,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:39:15,074 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-12 09:39:15,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:39:15 BoogieIcfgContainer [2020-10-12 09:39:15,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:39:15,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:39:15,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:39:15,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:39:15,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:39:14" (1/3) ... [2020-10-12 09:39:15,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43206e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:39:15, skipping insertion in model container [2020-10-12 09:39:15,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:39:14" (2/3) ... [2020-10-12 09:39:15,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43206e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:39:15, skipping insertion in model container [2020-10-12 09:39:15,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:39:15" (3/3) ... [2020-10-12 09:39:15,095 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum4.c [2020-10-12 09:39:15,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:39:15,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:39:15,175 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:39:15,198 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:39:15,198 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:39:15,199 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:39:15,199 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:39:15,199 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:39:15,199 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:39:15,199 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:39:15,199 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:39:15,217 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-12 09:39:15,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 09:39:15,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:15,224 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] [2020-10-12 09:39:15,225 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:15,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:15,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1372119815, now seen corresponding path program 1 times [2020-10-12 09:39:15,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:15,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446944275] [2020-10-12 09:39:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:17,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:18,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:18,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:39:18,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 09:39:18,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3589 [2020-10-12 09:39:18,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:18,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:39:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 09:39:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 09:39:19,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:19,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:19,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:19,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:19,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 09:39:19,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:19,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:39:19,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446944275] [2020-10-12 09:39:19,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:39:19,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 09:39:19,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265348538] [2020-10-12 09:39:19,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:39:19,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:19,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:39:19,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:39:19,154 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 6 states. [2020-10-12 09:39:19,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:19,416 INFO L93 Difference]: Finished difference Result 107 states and 161 transitions. [2020-10-12 09:39:19,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:39:19,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-12 09:39:19,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:19,427 INFO L225 Difference]: With dead ends: 107 [2020-10-12 09:39:19,428 INFO L226 Difference]: Without dead ends: 53 [2020-10-12 09:39:19,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:39:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-12 09:39:19,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-12 09:39:19,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 09:39:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2020-10-12 09:39:19,479 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 28 [2020-10-12 09:39:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:19,480 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2020-10-12 09:39:19,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:39:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2020-10-12 09:39:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 09:39:19,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:19,482 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] [2020-10-12 09:39:19,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:39:19,483 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:19,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:19,484 INFO L82 PathProgramCache]: Analyzing trace with hash 461345715, now seen corresponding path program 1 times [2020-10-12 09:39:19,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:19,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067696113] [2020-10-12 09:39:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:19,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:19,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:19,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:19,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:19,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:19,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:20,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:22,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:22,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:22,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:22,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:22,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:24,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:24,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:39:24,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 09:39:24,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 09:39:24,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 09:39:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:39:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 09:39:24,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:24,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:24,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:24,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:24,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:24,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:39:24,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:39:24,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067696113] [2020-10-12 09:39:24,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:39:24,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 09:39:24,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827233851] [2020-10-12 09:39:24,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:39:24,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:24,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:39:24,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:39:24,565 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand 6 states. [2020-10-12 09:39:24,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:24,844 INFO L93 Difference]: Finished difference Result 110 states and 143 transitions. [2020-10-12 09:39:24,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 09:39:24,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-12 09:39:24,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:24,846 INFO L225 Difference]: With dead ends: 110 [2020-10-12 09:39:24,846 INFO L226 Difference]: Without dead ends: 71 [2020-10-12 09:39:24,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:39:24,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-12 09:39:24,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 57. [2020-10-12 09:39:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 09:39:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-10-12 09:39:24,858 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 30 [2020-10-12 09:39:24,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:24,859 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-10-12 09:39:24,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:39:24,859 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-10-12 09:39:24,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 09:39:24,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:24,860 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] [2020-10-12 09:39:24,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:39:24,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:24,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:24,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1731830899, now seen corresponding path program 1 times [2020-10-12 09:39:24,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:24,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945748437] [2020-10-12 09:39:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:24,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:24,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:24,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:25,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:25,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:29,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:29,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:39:29,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 09:39:29,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:39:29,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 09:39:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:39:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:29,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:29,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:29,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:29,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:29,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:39:29,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:29,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:29,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:29,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:29,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:39:29,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945748437] [2020-10-12 09:39:29,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:29,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:39:29,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796614293] [2020-10-12 09:39:29,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:39:29,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:29,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:39:29,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:39:29,943 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 6 states. [2020-10-12 09:39:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:30,139 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2020-10-12 09:39:30,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:39:30,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-12 09:39:30,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:30,141 INFO L225 Difference]: With dead ends: 63 [2020-10-12 09:39:30,141 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 09:39:30,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:39:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 09:39:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-12 09:39:30,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 09:39:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-12 09:39:30,149 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 30 [2020-10-12 09:39:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:30,150 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-12 09:39:30,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:39:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-12 09:39:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 09:39:30,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:30,152 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] [2020-10-12 09:39:30,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:39:30,152 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:30,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:30,153 INFO L82 PathProgramCache]: Analyzing trace with hash -241487771, now seen corresponding path program 1 times [2020-10-12 09:39:30,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:30,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641640581] [2020-10-12 09:39:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:30,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:30,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:30,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:30,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:30,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:30,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:31,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:35,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:35,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:39:35,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 09:39:35,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:39:35,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:39:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:39:35,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:35,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:35,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:35,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:35,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 09:39:35,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:35,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 09:39:35,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641640581] [2020-10-12 09:39:35,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:35,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:39:35,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991244605] [2020-10-12 09:39:35,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:39:35,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:35,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:39:35,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:39:35,250 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 6 states. [2020-10-12 09:39:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:35,472 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2020-10-12 09:39:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:39:35,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-12 09:39:35,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:35,474 INFO L225 Difference]: With dead ends: 95 [2020-10-12 09:39:35,474 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 09:39:35,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:39:35,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 09:39:35,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-12 09:39:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-12 09:39:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2020-10-12 09:39:35,483 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 44 [2020-10-12 09:39:35,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:35,484 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2020-10-12 09:39:35,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:39:35,484 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2020-10-12 09:39:35,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 09:39:35,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:35,485 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 09:39:35,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:39:35,486 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:35,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:35,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1410773163, now seen corresponding path program 2 times [2020-10-12 09:39:35,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:35,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572088916] [2020-10-12 09:39:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:35,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:35,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:36,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:36,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:38,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:38,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:39,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:40,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:40,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:39:40,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 09:39:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:39:40,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-12 09:39:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:39:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 09:39:40,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:42,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:42,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:42,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:42,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:42,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:39:42,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:42,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:39:42,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572088916] [2020-10-12 09:39:42,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:42,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-12 09:39:42,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845061299] [2020-10-12 09:39:42,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-12 09:39:42,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:42,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-12 09:39:42,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:39:42,763 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 39 states. [2020-10-12 09:39:43,569 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-10-12 09:39:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:46,315 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2020-10-12 09:39:46,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 09:39:46,316 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 60 [2020-10-12 09:39:46,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:46,318 INFO L225 Difference]: With dead ends: 118 [2020-10-12 09:39:46,319 INFO L226 Difference]: Without dead ends: 113 [2020-10-12 09:39:46,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=337, Invalid=2969, Unknown=0, NotChecked=0, Total=3306 [2020-10-12 09:39:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-12 09:39:46,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2020-10-12 09:39:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 09:39:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2020-10-12 09:39:46,334 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 60 [2020-10-12 09:39:46,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:46,335 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2020-10-12 09:39:46,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-12 09:39:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2020-10-12 09:39:46,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 09:39:46,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:46,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-12 09:39:46,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:39:46,337 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:46,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:46,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2059159149, now seen corresponding path program 3 times [2020-10-12 09:39:46,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:46,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094629758] [2020-10-12 09:39:46,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:46,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:46,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:46,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:46,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:46,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:46,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:51,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:51,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:39:51,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:39:51,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:39:51,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:39:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 09:39:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:39:51,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:51,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:51,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:51,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:51,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:51,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:51,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:39:51,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:51,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 09:39:51,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094629758] [2020-10-12 09:39:51,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:51,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:39:51,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722708020] [2020-10-12 09:39:51,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:39:51,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:51,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:39:51,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:39:51,431 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand 10 states. [2020-10-12 09:39:51,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:51,881 INFO L93 Difference]: Finished difference Result 212 states and 245 transitions. [2020-10-12 09:39:51,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:39:51,882 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-10-12 09:39:51,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:51,884 INFO L225 Difference]: With dead ends: 212 [2020-10-12 09:39:51,884 INFO L226 Difference]: Without dead ends: 127 [2020-10-12 09:39:51,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:39:51,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-12 09:39:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 112. [2020-10-12 09:39:51,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-12 09:39:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2020-10-12 09:39:51,901 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 62 [2020-10-12 09:39:51,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:51,901 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2020-10-12 09:39:51,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:39:51,901 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2020-10-12 09:39:51,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 09:39:51,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:51,903 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-12 09:39:51,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:39:51,903 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:51,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:51,904 INFO L82 PathProgramCache]: Analyzing trace with hash 136809043, now seen corresponding path program 4 times [2020-10-12 09:39:51,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:51,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077658928] [2020-10-12 09:39:51,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:51,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:51,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:56,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:56,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:39:56,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:39:56,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:39:56,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:56,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:39:56,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 09:39:56,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:39:56,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:56,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:56,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:56,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:56,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:56,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:56,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:56,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:56,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:56,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 09:39:56,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077658928] [2020-10-12 09:39:56,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:56,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:39:56,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586694449] [2020-10-12 09:39:56,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:39:56,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:56,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:39:56,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:39:56,999 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand 10 states. [2020-10-12 09:39:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:57,463 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2020-10-12 09:39:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 09:39:57,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-10-12 09:39:57,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:57,465 INFO L225 Difference]: With dead ends: 119 [2020-10-12 09:39:57,465 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 09:39:57,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:39:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 09:39:57,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-12 09:39:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-12 09:39:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-10-12 09:39:57,491 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 62 [2020-10-12 09:39:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:57,491 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-10-12 09:39:57,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:39:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-10-12 09:39:57,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 09:39:57,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:57,493 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:57,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:39:57,494 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:57,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:57,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1607840187, now seen corresponding path program 5 times [2020-10-12 09:39:57,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:57,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798240407] [2020-10-12 09:39:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:57,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:57,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:59,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:00,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:02,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:02,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:40:02,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 09:40:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5230 [2020-10-12 09:40:02,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-12 09:40:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:40:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 09:40:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:07,103 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 28 [2020-10-12 09:40:08,298 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-10-12 09:40:08,493 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-10-12 09:40:09,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:09,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:09,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:09,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:09,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:09,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:09,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:09,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:09,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:40:09,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798240407] [2020-10-12 09:40:09,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:09,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-12 09:40:09,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239970511] [2020-10-12 09:40:09,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-12 09:40:09,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:09,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-12 09:40:09,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2999, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 09:40:09,727 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 57 states. [2020-10-12 09:40:10,624 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 44 [2020-10-12 09:40:10,929 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 50 [2020-10-12 09:40:11,219 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-10-12 09:40:11,454 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-12 09:40:11,972 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 58 [2020-10-12 09:40:13,148 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-12 09:40:13,629 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-10-12 09:40:14,679 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 55 [2020-10-12 09:40:14,964 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 44 [2020-10-12 09:40:15,275 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 46 [2020-10-12 09:40:15,687 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 63 [2020-10-12 09:40:16,096 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 61 [2020-10-12 09:40:16,449 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2020-10-12 09:40:16,739 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2020-10-12 09:40:16,988 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-12 09:40:17,382 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 58 [2020-10-12 09:40:17,659 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-10-12 09:40:17,902 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 32 [2020-10-12 09:40:18,335 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 33 [2020-10-12 09:40:19,376 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 41 [2020-10-12 09:40:19,672 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 46 [2020-10-12 09:40:20,072 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 47 [2020-10-12 09:40:20,488 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 45 [2020-10-12 09:40:20,911 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 48 [2020-10-12 09:40:21,357 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 43 [2020-10-12 09:40:21,927 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 62 [2020-10-12 09:40:22,393 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 60 [2020-10-12 09:40:22,755 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2020-10-12 09:40:23,085 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2020-10-12 09:40:23,382 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-10-12 09:40:23,790 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 61 [2020-10-12 09:40:24,096 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 43 [2020-10-12 09:40:24,441 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 47 [2020-10-12 09:40:24,825 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 42 [2020-10-12 09:40:25,145 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 46 [2020-10-12 09:40:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:27,178 INFO L93 Difference]: Finished difference Result 176 states and 197 transitions. [2020-10-12 09:40:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-12 09:40:27,179 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 76 [2020-10-12 09:40:27,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:27,185 INFO L225 Difference]: With dead ends: 176 [2020-10-12 09:40:27,185 INFO L226 Difference]: Without dead ends: 155 [2020-10-12 09:40:27,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3120 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=1287, Invalid=11369, Unknown=0, NotChecked=0, Total=12656 [2020-10-12 09:40:27,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-12 09:40:27,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2020-10-12 09:40:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 09:40:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2020-10-12 09:40:27,223 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 76 [2020-10-12 09:40:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:27,224 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2020-10-12 09:40:27,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-12 09:40:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2020-10-12 09:40:27,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 09:40:27,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:27,232 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:27,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:40:27,232 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:27,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:27,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1835434749, now seen corresponding path program 6 times [2020-10-12 09:40:27,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:27,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740996895] [2020-10-12 09:40:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:27,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:32,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:32,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 09:40:32,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:40:32,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:40:32,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:40:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 09:40:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:40:32,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:32,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:32,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:32,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:32,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:32,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:32,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:32,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:32,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-12 09:40:32,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740996895] [2020-10-12 09:40:32,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:32,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:40:32,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687161826] [2020-10-12 09:40:32,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:40:32,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:32,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:40:32,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:40:32,380 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand 12 states. [2020-10-12 09:40:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:33,666 INFO L93 Difference]: Finished difference Result 260 states and 296 transitions. [2020-10-12 09:40:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:40:33,667 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-10-12 09:40:33,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:33,670 INFO L225 Difference]: With dead ends: 260 [2020-10-12 09:40:33,671 INFO L226 Difference]: Without dead ends: 184 [2020-10-12 09:40:33,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:40:33,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-12 09:40:33,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 162. [2020-10-12 09:40:33,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 09:40:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 179 transitions. [2020-10-12 09:40:33,709 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 179 transitions. Word has length 78 [2020-10-12 09:40:33,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:33,709 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 179 transitions. [2020-10-12 09:40:33,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:40:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 179 transitions. [2020-10-12 09:40:33,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 09:40:33,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:33,722 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:33,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 09:40:33,722 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:33,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2041692159, now seen corresponding path program 7 times [2020-10-12 09:40:33,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:33,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649206914] [2020-10-12 09:40:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:33,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:33,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:33,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:33,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:38,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:38,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 09:40:38,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:40:38,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:40:38,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:40:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 09:40:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:40:38,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:38,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:38,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:38,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:38,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:38,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-12 09:40:38,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649206914] [2020-10-12 09:40:38,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:38,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 09:40:38,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855178528] [2020-10-12 09:40:38,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 09:40:38,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:38,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 09:40:38,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:40:38,898 INFO L87 Difference]: Start difference. First operand 162 states and 179 transitions. Second operand 13 states. [2020-10-12 09:40:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:39,720 INFO L93 Difference]: Finished difference Result 252 states and 276 transitions. [2020-10-12 09:40:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:40:39,721 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-10-12 09:40:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:39,722 INFO L225 Difference]: With dead ends: 252 [2020-10-12 09:40:39,722 INFO L226 Difference]: Without dead ends: 102 [2020-10-12 09:40:39,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:40:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-12 09:40:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2020-10-12 09:40:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 09:40:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2020-10-12 09:40:39,744 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 82 [2020-10-12 09:40:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:39,745 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2020-10-12 09:40:39,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 09:40:39,745 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2020-10-12 09:40:39,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 09:40:39,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:39,746 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:39,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 09:40:39,746 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:39,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:39,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2145266997, now seen corresponding path program 8 times [2020-10-12 09:40:39,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:39,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924970289] [2020-10-12 09:40:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:39,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:39,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:41,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:43,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:44,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:45,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:45,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 09:40:45,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:40:45,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5560 [2020-10-12 09:40:45,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 72 [2020-10-12 09:40:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:40:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 09:40:45,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:47,165 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2020-10-12 09:40:47,455 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-12 09:40:47,708 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-10-12 09:40:47,950 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-10-12 09:40:48,136 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2020-10-12 09:40:48,316 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-10-12 09:40:49,139 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2020-10-12 09:40:49,331 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-10-12 09:40:50,824 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-10-12 09:40:51,253 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-10-12 09:40:55,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:55,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:55,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:55,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:55,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:55,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:40:55,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924970289] [2020-10-12 09:40:55,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:55,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-10-12 09:40:55,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055629039] [2020-10-12 09:40:55,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-12 09:40:55,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:55,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-12 09:40:55,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=4516, Unknown=0, NotChecked=0, Total=4830 [2020-10-12 09:40:55,147 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand 70 states. [2020-10-12 09:40:58,174 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-10-12 09:40:58,595 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-10-12 09:40:58,869 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-10-12 09:40:59,122 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-12 09:40:59,628 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-12 09:40:59,911 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-10-12 09:41:00,640 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2020-10-12 09:41:00,896 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-10-12 09:41:01,266 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-12 09:41:01,776 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-12 09:41:02,344 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2020-10-12 09:41:02,962 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-12 09:41:03,423 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-10-12 09:41:03,853 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2020-10-12 09:41:04,344 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-10-12 09:41:04,787 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2020-10-12 09:41:05,079 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-10-12 09:41:05,566 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-10-12 09:41:06,265 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-10-12 09:41:06,888 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-10-12 09:41:07,215 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2020-10-12 09:41:07,726 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-10-12 09:41:08,032 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2020-10-12 09:41:08,621 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-10-12 09:41:09,189 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-10-12 09:41:09,798 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2020-10-12 09:41:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:41:13,689 INFO L93 Difference]: Finished difference Result 186 states and 205 transitions. [2020-10-12 09:41:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-12 09:41:13,691 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 92 [2020-10-12 09:41:13,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:41:13,693 INFO L225 Difference]: With dead ends: 186 [2020-10-12 09:41:13,693 INFO L226 Difference]: Without dead ends: 181 [2020-10-12 09:41:13,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3162 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=1254, Invalid=13752, Unknown=0, NotChecked=0, Total=15006 [2020-10-12 09:41:13,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-12 09:41:13,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 159. [2020-10-12 09:41:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-12 09:41:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 174 transitions. [2020-10-12 09:41:13,714 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 174 transitions. Word has length 92 [2020-10-12 09:41:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:41:13,715 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 174 transitions. [2020-10-12 09:41:13,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-12 09:41:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 174 transitions. [2020-10-12 09:41:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 09:41:13,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:41:13,716 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:41:13,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 09:41:13,716 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:41:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:41:13,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2077450099, now seen corresponding path program 9 times [2020-10-12 09:41:13,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:41:13,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932543421] [2020-10-12 09:41:13,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:41:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:13,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:13,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:13,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:18,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:18,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:18,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 09:41:18,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:41:18,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:41:18,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:41:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 09:41:18,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:41:18,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:18,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:41:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:18,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:18,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:18,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:41:18,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:18,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:41:18,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:18,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:41:18,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:41:18,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:41:18,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:41:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-12 09:41:18,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932543421] [2020-10-12 09:41:18,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:41:18,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:41:18,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131474406] [2020-10-12 09:41:18,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:41:18,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:41:18,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:41:18,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:41:18,969 INFO L87 Difference]: Start difference. First operand 159 states and 174 transitions. Second operand 14 states. [2020-10-12 09:41:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:41:20,591 INFO L93 Difference]: Finished difference Result 365 states and 403 transitions. [2020-10-12 09:41:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:41:20,593 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-12 09:41:20,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:41:20,594 INFO L225 Difference]: With dead ends: 365 [2020-10-12 09:41:20,594 INFO L226 Difference]: Without dead ends: 183 [2020-10-12 09:41:20,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:41:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-12 09:41:20,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 168. [2020-10-12 09:41:20,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-12 09:41:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 182 transitions. [2020-10-12 09:41:20,622 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 182 transitions. Word has length 94 [2020-10-12 09:41:20,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:41:20,622 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 182 transitions. [2020-10-12 09:41:20,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:41:20,622 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 182 transitions. [2020-10-12 09:41:20,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 09:41:20,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:41:20,623 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:41:20,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 09:41:20,624 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:41:20,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:41:20,624 INFO L82 PathProgramCache]: Analyzing trace with hash 549515315, now seen corresponding path program 10 times [2020-10-12 09:41:20,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:41:20,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115770116] [2020-10-12 09:41:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:41:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:20,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:20,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:25,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:25,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 09:41:25,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:41:25,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:41:25,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:41:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 09:41:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:41:25,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:25,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:41:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:25,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:25,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:25,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:41:25,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:25,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:41:25,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:25,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:41:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:41:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:41:25,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-12 09:41:25,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115770116] [2020-10-12 09:41:25,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:41:25,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:41:25,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826513240] [2020-10-12 09:41:25,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:41:25,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:41:25,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:41:25,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:41:25,874 INFO L87 Difference]: Start difference. First operand 168 states and 182 transitions. Second operand 14 states. [2020-10-12 09:41:27,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:41:27,071 INFO L93 Difference]: Finished difference Result 175 states and 189 transitions. [2020-10-12 09:41:27,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 09:41:27,072 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-12 09:41:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:41:27,073 INFO L225 Difference]: With dead ends: 175 [2020-10-12 09:41:27,073 INFO L226 Difference]: Without dead ends: 110 [2020-10-12 09:41:27,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:41:27,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-12 09:41:27,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-12 09:41:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-12 09:41:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-10-12 09:41:27,087 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 94 [2020-10-12 09:41:27,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:41:27,087 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-10-12 09:41:27,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:41:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-10-12 09:41:27,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 09:41:27,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:41:27,089 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:41:27,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 09:41:27,089 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:41:27,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:41:27,090 INFO L82 PathProgramCache]: Analyzing trace with hash 8711205, now seen corresponding path program 11 times [2020-10-12 09:41:27,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:41:27,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123419644] [2020-10-12 09:41:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:41:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:27,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:31,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:32,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:32,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 09:41:32,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:41:32,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5683 [2020-10-12 09:41:32,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 88 [2020-10-12 09:41:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:41:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 09:41:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:35,981 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-10-12 09:41:36,198 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 28 [2020-10-12 09:41:36,416 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-10-12 09:41:36,644 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-10-12 09:41:36,888 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-10-12 09:41:37,140 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-12 09:41:37,421 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-10-12 09:41:37,708 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-10-12 09:41:38,013 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2020-10-12 09:41:38,344 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-10-12 09:41:38,689 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2020-10-12 09:41:38,991 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-10-12 09:41:39,331 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-10-12 09:41:39,644 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2020-10-12 09:41:39,995 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-10-12 09:41:40,354 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-10-12 09:41:40,706 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-10-12 09:41:41,068 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-12 09:41:41,414 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-10-12 09:41:41,784 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-12 09:41:42,146 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-10-12 09:41:42,430 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-10-12 09:41:42,835 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 36 [2020-10-12 09:41:43,248 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 34 [2020-10-12 09:41:43,640 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 34 [2020-10-12 09:41:44,098 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-10-12 09:41:44,518 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-10-12 09:41:44,926 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2020-10-12 09:41:45,283 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-10-12 09:41:45,632 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-10-12 09:41:45,974 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-10-12 09:41:46,552 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 37 [2020-10-12 09:41:47,001 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 34 [2020-10-12 09:41:47,413 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-10-12 09:41:47,794 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-10-12 09:41:48,206 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-10-12 09:41:48,674 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-10-12 09:41:49,066 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2020-10-12 09:41:49,469 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2020-10-12 09:41:49,919 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 27 [2020-10-12 09:41:56,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:41:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:41:56,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:41:56,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:41:56,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:41:56,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:41:56,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:41:56,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:41:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:41:56,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:41:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:41:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:41:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 32 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:41:56,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123419644] [2020-10-12 09:41:56,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:41:56,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-10-12 09:41:56,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073074593] [2020-10-12 09:41:56,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-10-12 09:41:56,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:41:56,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-10-12 09:41:56,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=6932, Unknown=0, NotChecked=0, Total=7482 [2020-10-12 09:41:56,571 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 87 states. [2020-10-12 09:41:58,163 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-12 09:42:01,713 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2020-10-12 09:42:02,762 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-10-12 09:42:05,019 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-10-12 09:42:05,347 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-12 09:42:05,777 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-12 09:42:06,339 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-12 09:42:07,104 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-10-12 09:42:07,662 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2020-10-12 09:42:08,475 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-12 09:42:09,051 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-10-12 09:42:09,560 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2020-10-12 09:42:09,902 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-12 09:42:10,465 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 49 [2020-10-12 09:42:10,885 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-10-12 09:42:11,391 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2020-10-12 09:42:11,997 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-10-12 09:42:12,309 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-10-12 09:42:13,076 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-12 09:42:13,446 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-10-12 09:42:13,830 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-10-12 09:42:14,298 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-10-12 09:42:14,914 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-10-12 09:42:15,453 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-12 09:42:15,890 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-10-12 09:42:16,700 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-10-12 09:42:17,357 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-10-12 09:42:18,140 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-10-12 09:42:18,724 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2020-10-12 09:42:19,437 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 52 [2020-10-12 09:42:20,054 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2020-10-12 09:42:20,950 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2020-10-12 09:42:21,901 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-12 09:42:22,492 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 32 [2020-10-12 09:42:23,283 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2020-10-12 09:42:23,555 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-12 09:42:24,440 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-12 09:42:24,732 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-12 09:42:25,198 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 26 [2020-10-12 09:42:26,175 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2020-10-12 09:42:26,801 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-12 09:42:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:34,138 INFO L93 Difference]: Finished difference Result 237 states and 257 transitions. [2020-10-12 09:42:34,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-12 09:42:34,141 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 108 [2020-10-12 09:42:34,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:34,143 INFO L225 Difference]: With dead ends: 237 [2020-10-12 09:42:34,143 INFO L226 Difference]: Without dead ends: 217 [2020-10-12 09:42:34,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5307 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=1902, Invalid=21050, Unknown=0, NotChecked=0, Total=22952 [2020-10-12 09:42:34,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-12 09:42:34,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 175. [2020-10-12 09:42:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-12 09:42:34,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 189 transitions. [2020-10-12 09:42:34,169 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 189 transitions. Word has length 108 [2020-10-12 09:42:34,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:34,170 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 189 transitions. [2020-10-12 09:42:34,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-10-12 09:42:34,170 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 189 transitions. [2020-10-12 09:42:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 09:42:34,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:34,171 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:34,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 09:42:34,172 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:34,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:34,172 INFO L82 PathProgramCache]: Analyzing trace with hash -564678237, now seen corresponding path program 12 times [2020-10-12 09:42:34,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:34,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940482401] [2020-10-12 09:42:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:34,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:34,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:34,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:34,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:34,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:34,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:39,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:39,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 09:42:39,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:42:39,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:42:39,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:39,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:42:39,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 09:42:39,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:42:39,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:39,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:42:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:39,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:39,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:42:39,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:42:39,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-12 09:42:39,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940482401] [2020-10-12 09:42:39,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:42:39,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:42:39,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649102612] [2020-10-12 09:42:39,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:42:39,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:42:39,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:42:39,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:42:39,545 INFO L87 Difference]: Start difference. First operand 175 states and 189 transitions. Second operand 16 states. [2020-10-12 09:42:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:41,437 INFO L93 Difference]: Finished difference Result 391 states and 426 transitions. [2020-10-12 09:42:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 09:42:41,439 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 110 [2020-10-12 09:42:41,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:41,441 INFO L225 Difference]: With dead ends: 391 [2020-10-12 09:42:41,442 INFO L226 Difference]: Without dead ends: 211 [2020-10-12 09:42:41,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:42:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-12 09:42:41,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 196. [2020-10-12 09:42:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-12 09:42:41,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 210 transitions. [2020-10-12 09:42:41,465 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 210 transitions. Word has length 110 [2020-10-12 09:42:41,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:41,465 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 210 transitions. [2020-10-12 09:42:41,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:42:41,466 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 210 transitions. [2020-10-12 09:42:41,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 09:42:41,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:41,467 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:41,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 09:42:41,467 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:41,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1613624099, now seen corresponding path program 13 times [2020-10-12 09:42:41,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:41,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284207043] [2020-10-12 09:42:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:41,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:41,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:41,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:41,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:42,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:46,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:46,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 09:42:46,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:42:46,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:42:46,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:42:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 09:42:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:42:46,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:46,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:42:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:46,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:46,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:46,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:42:46,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:46,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:42:46,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:46,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:46,799 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-12 09:42:46,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284207043] [2020-10-12 09:42:46,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:42:46,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:42:46,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806850476] [2020-10-12 09:42:46,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:42:46,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:42:46,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:42:46,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:42:46,802 INFO L87 Difference]: Start difference. First operand 196 states and 210 transitions. Second operand 16 states. [2020-10-12 09:42:48,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:48,866 INFO L93 Difference]: Finished difference Result 203 states and 217 transitions. [2020-10-12 09:42:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 09:42:48,868 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 110 [2020-10-12 09:42:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:48,870 INFO L225 Difference]: With dead ends: 203 [2020-10-12 09:42:48,870 INFO L226 Difference]: Without dead ends: 126 [2020-10-12 09:42:48,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:42:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-12 09:42:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-12 09:42:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-12 09:42:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 134 transitions. [2020-10-12 09:42:48,885 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 134 transitions. Word has length 110 [2020-10-12 09:42:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:48,886 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 134 transitions. [2020-10-12 09:42:48,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:42:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 134 transitions. [2020-10-12 09:42:48,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 09:42:48,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:48,887 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:48,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 09:42:48,887 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:48,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:48,888 INFO L82 PathProgramCache]: Analyzing trace with hash -610366699, now seen corresponding path program 14 times [2020-10-12 09:42:48,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:48,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678203235] [2020-10-12 09:42:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:48,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:49,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:51,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:53,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:53,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 09:42:53,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:42:53,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-12 09:42:53,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:53,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 104 [2020-10-12 09:42:53,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:42:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 09:42:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:55,885 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-12 09:42:56,301 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-10-12 09:42:56,744 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-10-12 09:42:57,872 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2020-10-12 09:42:58,737 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-10-12 09:42:59,029 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2020-10-12 09:42:59,357 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2020-10-12 09:42:59,659 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2020-10-12 09:42:59,956 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2020-10-12 09:43:00,271 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-10-12 09:43:00,637 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-10-12 09:43:01,003 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2020-10-12 09:43:01,353 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27