/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:00:52,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:00:52,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:00:52,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:00:52,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:00:52,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:00:52,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:00:52,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:00:52,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:00:52,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:00:52,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:00:52,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:00:52,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:00:52,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:00:52,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:00:52,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:00:52,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:00:52,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:00:52,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:00:52,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:00:52,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:00:52,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:00:52,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:00:52,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:00:52,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:00:52,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:00:52,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:00:52,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:00:52,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:00:52,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:00:52,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:00:52,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:00:52,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:00:52,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:00:52,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:00:52,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:00:52,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:00:52,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:00:52,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:00:52,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:00:52,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:00:52,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:00:52,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:00:52,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:00:52,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:00:52,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:00:52,257 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:00:52,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:00:52,258 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:00:52,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:00:52,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:00:52,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:00:52,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:00:52,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:00:52,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:00:52,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:00:52,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:00:52,261 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:00:52,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:00:52,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:00:52,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:00:52,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:00:52,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:00:52,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:00:52,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:00:52,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:00:52,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:00:52,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:00:52,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:00:52,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:00:52,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:00:52,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:00:52,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:00:52,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:00:52,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:00:52,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:00:52,731 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:00:52,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-25 02:00:52,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/846664da6/28a5ca0733084dcdab36117ca5e82016/FLAG371f1957b [2020-09-25 02:00:53,358 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:00:53,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-25 02:00:53,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/846664da6/28a5ca0733084dcdab36117ca5e82016/FLAG371f1957b [2020-09-25 02:00:53,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/846664da6/28a5ca0733084dcdab36117ca5e82016 [2020-09-25 02:00:53,715 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:00:53,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:00:53,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:00:53,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:00:53,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:00:53,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:53" (1/1) ... [2020-09-25 02:00:53,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:53, skipping insertion in model container [2020-09-25 02:00:53,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:53" (1/1) ... [2020-09-25 02:00:53,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:00:53,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:00:53,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:00:53,996 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:00:54,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:00:54,038 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:00:54,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:54 WrapperNode [2020-09-25 02:00:54,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:00:54,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:00:54,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:00:54,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:00:54,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:54" (1/1) ... [2020-09-25 02:00:54,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:54" (1/1) ... [2020-09-25 02:00:54,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:54" (1/1) ... [2020-09-25 02:00:54,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:54" (1/1) ... [2020-09-25 02:00:54,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:54" (1/1) ... [2020-09-25 02:00:54,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:54" (1/1) ... [2020-09-25 02:00:54,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:54" (1/1) ... [2020-09-25 02:00:54,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:00:54,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:00:54,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:00:54,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:00:54,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:00:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:00:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:00:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-25 02:00:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2020-09-25 02:00:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:00:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:00:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:00:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-25 02:00:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2020-09-25 02:00:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:00:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:00:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:00:54,531 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:00:54,531 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:00:54,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:54 BoogieIcfgContainer [2020-09-25 02:00:54,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:00:54,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:00:54,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:00:54,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:00:54,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:00:53" (1/3) ... [2020-09-25 02:00:54,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b68719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:54, skipping insertion in model container [2020-09-25 02:00:54,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:54" (2/3) ... [2020-09-25 02:00:54,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b68719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:54, skipping insertion in model container [2020-09-25 02:00:54,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:54" (3/3) ... [2020-09-25 02:00:54,561 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2020-09-25 02:00:54,573 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:00:54,582 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:00:54,600 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:00:54,630 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:00:54,630 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:00:54,630 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:00:54,630 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:00:54,630 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:00:54,630 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:00:54,630 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:00:54,631 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:00:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 02:00:54,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 02:00:54,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:54,662 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] [2020-09-25 02:00:54,662 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:54,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:54,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1892500808, now seen corresponding path program 1 times [2020-09-25 02:00:54,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:54,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499191394] [2020-09-25 02:00:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:54,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:55,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 02:00:55,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-25 02:00:55,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 02:00:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:00:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 02:00:55,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:55,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:55,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:00:55,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:55,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:00:55,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:55,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:55,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:00:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:55,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:55,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:00:55,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:55,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 02:00:55,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:55,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:55,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:55,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:55,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:55,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 02:00:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:55,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:55,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:55,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:55,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:00:55,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:55,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:00:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:55,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:00:55,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499191394] [2020-09-25 02:00:55,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:55,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:00:55,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055367839] [2020-09-25 02:00:55,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:00:55,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:55,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:00:55,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:55,593 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 6 states. [2020-09-25 02:00:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:55,809 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-09-25 02:00:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:00:55,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 02:00:55,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:55,826 INFO L225 Difference]: With dead ends: 70 [2020-09-25 02:00:55,826 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 02:00:55,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:00:55,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 02:00:55,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-25 02:00:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 02:00:55,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-09-25 02:00:55,895 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 29 [2020-09-25 02:00:55,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:55,895 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-09-25 02:00:55,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:00:55,896 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-09-25 02:00:55,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 02:00:55,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:55,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:55,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:00:55,901 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:55,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:55,902 INFO L82 PathProgramCache]: Analyzing trace with hash -165736076, now seen corresponding path program 1 times [2020-09-25 02:00:55,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:55,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283858450] [2020-09-25 02:00:55,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:55,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:56,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 02:00:56,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-09-25 02:00:56,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:00:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:00:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 02:00:56,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:56,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:56,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:00:56,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:56,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:56,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:56,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:00:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:56,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:56,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 02:00:56,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 02:00:56,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:00:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:00:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:00:56,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:56,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:00:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:56,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:00:56,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 02:00:56,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:00:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:00:56,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:56,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 02:00:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:56,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:56,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:00:56,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:56,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 02:00:56,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:00:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:00:56,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:56,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 02:00:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:56,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:57,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:57,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:57,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:57,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 02:00:57,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:57,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:57,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 02:00:57,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283858450] [2020-09-25 02:00:57,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:57,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:00:57,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326975744] [2020-09-25 02:00:57,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:00:57,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:57,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:00:57,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:00:57,077 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 11 states. [2020-09-25 02:00:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:57,715 INFO L93 Difference]: Finished difference Result 93 states and 110 transitions. [2020-09-25 02:00:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 02:00:57,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-25 02:00:57,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:57,720 INFO L225 Difference]: With dead ends: 93 [2020-09-25 02:00:57,720 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 02:00:57,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2020-09-25 02:00:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 02:00:57,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2020-09-25 02:00:57,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 02:00:57,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-09-25 02:00:57,766 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 48 [2020-09-25 02:00:57,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:57,766 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-09-25 02:00:57,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:00:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-09-25 02:00:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 02:00:57,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:57,774 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:57,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:00:57,775 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:57,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:57,776 INFO L82 PathProgramCache]: Analyzing trace with hash 492898986, now seen corresponding path program 1 times [2020-09-25 02:00:57,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:57,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223828826] [2020-09-25 02:00:57,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:57,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:57,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:57,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:58,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 02:00:59,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:59,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2007 [2020-09-25 02:00:59,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:00:59,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:00:59,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 02:00:59,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:59,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:00:59,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:00:59,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:59,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:59,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:00:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:59,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:59,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 02:01:00,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:00,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-25 02:01:00,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:01:00,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:00,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:00,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:00,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:01:00,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:00,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 02:01:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:00,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:00,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 02:01:00,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:00,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:00,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:01:00,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:00,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 02:01:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:01:00,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 02:01:00,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 02:01:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:00,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:01:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:00,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:00,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:00,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:01:00,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:00,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:00,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:00,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 02:01:00,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223828826] [2020-09-25 02:01:00,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:00,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:01:00,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009039422] [2020-09-25 02:01:00,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:01:00,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:00,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:01:00,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:01:00,452 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 11 states. [2020-09-25 02:01:00,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:00,793 INFO L93 Difference]: Finished difference Result 132 states and 171 transitions. [2020-09-25 02:01:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:01:00,793 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-09-25 02:01:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:00,798 INFO L225 Difference]: With dead ends: 132 [2020-09-25 02:01:00,798 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 02:01:00,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:01:00,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 02:01:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-09-25 02:01:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 02:01:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2020-09-25 02:01:00,826 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 56 [2020-09-25 02:01:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:00,827 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2020-09-25 02:01:00,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:01:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2020-09-25 02:01:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 02:01:00,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:00,836 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 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] [2020-09-25 02:01:00,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:01:00,837 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:00,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1310810726, now seen corresponding path program 2 times [2020-09-25 02:01:00,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:00,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816201426] [2020-09-25 02:01:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:00,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:02,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:02,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:05,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 02:01:05,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:05,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 02:01:05,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 02:01:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 02:01:05,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:05,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:05,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:05,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:01:05,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:05,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:05,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:05,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:01:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:05,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:06,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:06,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:06,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 02:01:06,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:06,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-09-25 02:01:06,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:01:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 02:01:06,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:06,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:06,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:06,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:06,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:07,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 02:01:07,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:07,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-25 02:01:07,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:07,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:07,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:07,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:01:07,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:07,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:07,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:07,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:07,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:07,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:01:07,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:07,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 02:01:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:07,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:07,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:07,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:01:07,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:01:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 02:01:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:07,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:07,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:07,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:07,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:07,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:07,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:07,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 02:01:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:07,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:07,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:07,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:01:07,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:01:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:07,339 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 02:01:07,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816201426] [2020-09-25 02:01:07,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:07,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:01:07,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470066097] [2020-09-25 02:01:07,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:01:07,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:07,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:01:07,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:01:07,346 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 9 states. [2020-09-25 02:01:07,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:07,645 INFO L93 Difference]: Finished difference Result 124 states and 158 transitions. [2020-09-25 02:01:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:01:07,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 02:01:07,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:07,650 INFO L225 Difference]: With dead ends: 124 [2020-09-25 02:01:07,651 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 02:01:07,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:01:07,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 02:01:07,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2020-09-25 02:01:07,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 02:01:07,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2020-09-25 02:01:07,672 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 67 [2020-09-25 02:01:07,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:07,673 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-09-25 02:01:07,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:01:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2020-09-25 02:01:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 02:01:07,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:07,678 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 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] [2020-09-25 02:01:07,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:01:07,679 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:07,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:07,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1835668384, now seen corresponding path program 3 times [2020-09-25 02:01:07,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:07,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971477460] [2020-09-25 02:01:07,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:12,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:12,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 02:01:12,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:12,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 02:01:12,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:12,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:12,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:01:12,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 02:01:12,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:12,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:12,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:12,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:01:12,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:12,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:12,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:12,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:12,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:12,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:01:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:12,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:12,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:17,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:17,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 02:01:17,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:17,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:01:17,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 02:01:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:17,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:17,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:17,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:18,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 02:01:18,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:18,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-25 02:01:18,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:01:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:01:18,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:18,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:18,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:18,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:18,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:01:18,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:18,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 02:01:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:18,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:18,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:18,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:01:18,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:18,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:18,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:18,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 02:01:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:18,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:18,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 02:01:18,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:18,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 02:01:18,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:01:18,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:18,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:18,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:18,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:18,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:01:18,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:18,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:18,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:18,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 02:01:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:18,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:18,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:18,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:01:18,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:18,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 02:01:18,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 02:01:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:18,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:18,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:18,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:18,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:18,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:01:18,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:18,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:18,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:18,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:18,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 17 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 02:01:18,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971477460] [2020-09-25 02:01:18,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:18,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:01:18,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475715631] [2020-09-25 02:01:18,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:01:18,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:18,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:01:18,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:01:18,379 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 10 states. [2020-09-25 02:01:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:18,583 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2020-09-25 02:01:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:01:18,583 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-09-25 02:01:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:18,585 INFO L225 Difference]: With dead ends: 71 [2020-09-25 02:01:18,585 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 02:01:18,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:01:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 02:01:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 02:01:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 02:01:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-09-25 02:01:18,604 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 86 [2020-09-25 02:01:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:18,604 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-09-25 02:01:18,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:01:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-09-25 02:01:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-25 02:01:18,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:18,606 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:18,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:01:18,606 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:18,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:18,607 INFO L82 PathProgramCache]: Analyzing trace with hash -646694506, now seen corresponding path program 2 times [2020-09-25 02:01:18,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:18,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885878181] [2020-09-25 02:01:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:19,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 02:01:19,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1113 [2020-09-25 02:01:19,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 02:01:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:01:19,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 02:01:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:19,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:19,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:19,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:01:19,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:19,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:19,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:19,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:19,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:19,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:19,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:01:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:19,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:20,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 02:01:20,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:20,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-09-25 02:01:20,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 02:01:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:01:20,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 02:01:20,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:20,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:20,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:20,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 02:01:20,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 02:01:20,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:01:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:01:20,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:20,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:20,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:20,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:20,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:20,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:01:20,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:01:20,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:01:20,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:20,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 02:01:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:20,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:20,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:20,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:20,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:01:20,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:01:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:01:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 02:01:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:20,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:20,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 02:01:20,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:20,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 02:01:20,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:01:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:01:20,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:21,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:21,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:21,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 02:01:21,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:21,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:01:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:01:21,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:21,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 02:01:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:21,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:21,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:01:21,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:01:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:01:21,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:21,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 02:01:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:01:21,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 02:01:21,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 02:01:21,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:21,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:01:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:21,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:21,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:21,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:21,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:01:21,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:01:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:01:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-09-25 02:01:21,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885878181] [2020-09-25 02:01:21,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:21,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 02:01:21,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140736937] [2020-09-25 02:01:21,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 02:01:21,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:21,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 02:01:21,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:01:21,403 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 17 states. [2020-09-25 02:01:22,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:22,137 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2020-09-25 02:01:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 02:01:22,139 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 94 [2020-09-25 02:01:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:22,143 INFO L225 Difference]: With dead ends: 102 [2020-09-25 02:01:22,143 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 02:01:22,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 02:01:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 02:01:22,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2020-09-25 02:01:22,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 02:01:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2020-09-25 02:01:22,171 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 94 [2020-09-25 02:01:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:22,172 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2020-09-25 02:01:22,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 02:01:22,172 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2020-09-25 02:01:22,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 02:01:22,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:22,175 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-09-25 02:01:22,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:01:22,175 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:22,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash 774145474, now seen corresponding path program 3 times [2020-09-25 02:01:22,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:22,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557891205] [2020-09-25 02:01:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:22,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:22,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:27,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 02:01:27,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:01:27,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:01:27,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:27,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:27,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 02:01:27,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:27,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:27,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:01:27,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:27,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:27,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:01:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:32,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 02:01:32,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:01:32,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:01:32,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:32,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:32,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 02:01:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:32,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:32,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:32,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 02:01:32,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:32,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 02:01:32,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:32,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:01:32,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:32,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:32,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:32,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:32,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:32,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:01:32,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:32,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 02:01:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:32,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:32,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:32,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:32,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:01:32,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:32,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:32,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 02:01:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:32,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:37,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 02:01:37,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:37,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:01:37,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:01:37,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:37,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:37,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:37,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 02:01:37,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:01:37,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:01:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:37,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:37,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:37,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:37,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:01:37,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:37,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:37,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 02:01:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:37,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:37,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:37,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:01:37,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 02:01:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:37,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:37,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 02:01:37,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:37,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-25 02:01:37,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:01:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 02:01:37,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:01:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:38,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:38,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:38,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:38,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:38,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:38,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:01:38,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:38,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 02:01:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:38,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:38,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:38,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:01:38,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:38,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:38,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:38,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:38,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:38,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-25 02:01:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:38,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:38,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:38,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:01:38,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:01:38,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:38,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:01:38,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:38,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:38,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 02:01:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:38,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:38,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:38,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:38,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:38,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 130 proven. 136 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-09-25 02:01:38,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557891205] [2020-09-25 02:01:38,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:38,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:01:38,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671619943] [2020-09-25 02:01:38,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:01:38,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:38,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:01:38,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:01:38,104 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand 10 states. [2020-09-25 02:01:38,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:38,575 INFO L93 Difference]: Finished difference Result 158 states and 201 transitions. [2020-09-25 02:01:38,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:01:38,576 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-09-25 02:01:38,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:38,577 INFO L225 Difference]: With dead ends: 158 [2020-09-25 02:01:38,578 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 02:01:38,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:01:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 02:01:38,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2020-09-25 02:01:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 02:01:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-09-25 02:01:38,590 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 132 [2020-09-25 02:01:38,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:38,590 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-09-25 02:01:38,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:01:38,590 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-09-25 02:01:38,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 02:01:38,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:38,591 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 02:01:38,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:01:38,592 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:38,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:38,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1860925472, now seen corresponding path program 4 times [2020-09-25 02:01:38,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:38,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693170291] [2020-09-25 02:01:38,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:38,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:38,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking...