/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=SMALLEST --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-simple/id_o20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:14:57,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:14:57,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:14:57,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:14:57,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:14:57,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:14:57,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:14:57,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:14:57,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:14:57,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:14:57,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:14:57,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:14:57,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:14:57,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:14:57,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:14:57,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:14:57,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:14:57,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:14:57,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:14:57,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:14:57,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:14:57,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:14:57,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:14:57,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:14:57,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:14:57,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:14:57,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:14:57,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:14:57,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:14:57,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:14:57,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:14:57,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:14:57,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:14:57,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:14:57,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:14:57,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:14:57,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:14:57,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:14:57,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:14:57,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:14:57,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:14:57,408 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 [2020-09-24 18:14:57,435 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:14:57,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:14:57,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:14:57,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:14:57,437 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:14:57,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:14:57,438 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:14:57,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:14:57,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:14:57,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:14:57,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:14:57,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:14:57,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:14:57,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:14:57,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:14:57,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:14:57,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:14:57,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:14:57,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:14:57,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:14:57,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:14:57,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:14:57,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:14:57,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:14:57,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:14:57,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:14:57,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:14:57,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:14:57,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:14:57,442 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:14:57,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:14:57,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:14:57,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:14:57,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:14:57,918 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:14:57,919 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o20.c [2020-09-24 18:14:57,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0624fe002/3a77684a345a4d259ecf338be563111a/FLAG97a70da0a [2020-09-24 18:14:58,524 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:14:58,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o20.c [2020-09-24 18:14:58,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0624fe002/3a77684a345a4d259ecf338be563111a/FLAG97a70da0a [2020-09-24 18:14:58,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0624fe002/3a77684a345a4d259ecf338be563111a [2020-09-24 18:14:58,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:14:58,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:14:58,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:14:58,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:14:58,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:14:58,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:14:58" (1/1) ... [2020-09-24 18:14:58,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6ee0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:58, skipping insertion in model container [2020-09-24 18:14:58,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:14:58" (1/1) ... [2020-09-24 18:14:58,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:14:58,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:14:59,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:14:59,161 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:14:59,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:14:59,200 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:14:59,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:59 WrapperNode [2020-09-24 18:14:59,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:14:59,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:14:59,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:14:59,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:14:59,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:59" (1/1) ... [2020-09-24 18:14:59,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:59" (1/1) ... [2020-09-24 18:14:59,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:59" (1/1) ... [2020-09-24 18:14:59,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:59" (1/1) ... [2020-09-24 18:14:59,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:59" (1/1) ... [2020-09-24 18:14:59,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:59" (1/1) ... [2020-09-24 18:14:59,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:59" (1/1) ... [2020-09-24 18:14:59,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:14:59,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:14:59,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:14:59,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:14:59,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:59" (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 [2020-09-24 18:14:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:14:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:14:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 18:14:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:14:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 18:14:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:14:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 18:14:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:14:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:14:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:14:59,563 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:14:59,563 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:14:59,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:14:59 BoogieIcfgContainer [2020-09-24 18:14:59,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:14:59,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:14:59,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:14:59,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:14:59,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:14:58" (1/3) ... [2020-09-24 18:14:59,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3e7cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:14:59, skipping insertion in model container [2020-09-24 18:14:59,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:59" (2/3) ... [2020-09-24 18:14:59,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3e7cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:14:59, skipping insertion in model container [2020-09-24 18:14:59,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:14:59" (3/3) ... [2020-09-24 18:14:59,579 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o20.c [2020-09-24 18:14:59,592 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:14:59,600 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:14:59,621 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:14:59,648 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:14:59,648 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:14:59,649 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:14:59,649 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:14:59,649 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:14:59,649 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:14:59,649 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:14:59,650 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:14:59,669 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-24 18:14:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 18:14:59,675 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:59,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:59,677 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:59,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-24 18:14:59,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:59,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623315896] [2020-09-24 18:14:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:59,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:59,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:59,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:14:59,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:59,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 18:14:59,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:59,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:14:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:14:59,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:59,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:59,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:59,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:59,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:59,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:59,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:59,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:00,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:00,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:00,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:00,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:00,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:15:00,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:00,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:00,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:00,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:00,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:15:00,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623315896] [2020-09-24 18:15:00,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:15:00,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:15:00,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463112741] [2020-09-24 18:15:00,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:15:00,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:00,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:15:00,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:15:00,112 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-24 18:15:00,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:00,198 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 18:15:00,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:15:00,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 18:15:00,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:00,212 INFO L225 Difference]: With dead ends: 37 [2020-09-24 18:15:00,213 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 18:15:00,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:15:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 18:15:00,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-24 18:15:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 18:15:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-24 18:15:00,271 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-24 18:15:00,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:00,272 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-24 18:15:00,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:15:00,272 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-24 18:15:00,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 18:15:00,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:00,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:00,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:15:00,275 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:00,276 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-24 18:15:00,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:00,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010195535] [2020-09-24 18:15:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:00,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:00,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:00,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:15:00,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:00,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-24 18:15:00,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:15:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:15:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:15:00,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:00,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:00,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:00,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:00,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:00,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:00,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:15:00,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:00,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:00,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:00,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:00,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:00,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 18:15:00,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:00,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:00,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:00,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:00,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:00,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:00,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:00,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 18:15:00,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:00,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:00,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:00,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:15:00,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010195535] [2020-09-24 18:15:00,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:00,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:15:00,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032837891] [2020-09-24 18:15:00,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:15:00,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:00,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:15:00,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:15:00,864 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-24 18:15:00,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:00,963 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-24 18:15:00,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:15:00,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-24 18:15:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:00,965 INFO L225 Difference]: With dead ends: 31 [2020-09-24 18:15:00,965 INFO L226 Difference]: Without dead ends: 26 [2020-09-24 18:15:00,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:15:00,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-24 18:15:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-24 18:15:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 18:15:00,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-24 18:15:00,980 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-24 18:15:00,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:00,982 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-24 18:15:00,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:15:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-24 18:15:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 18:15:00,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:00,986 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:00,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:15:00,987 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:00,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:00,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-24 18:15:00,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:00,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085416640] [2020-09-24 18:15:00,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:01,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:01,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:01,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:15:01,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:01,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-24 18:15:01,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:01,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:15:01,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 18:15:01,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:15:01,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:01,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:01,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:01,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:01,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:01,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:01,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:15:01,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:01,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:01,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:01,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:01,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:01,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:01,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-24 18:15:01,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:01,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:01,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:01,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:01,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 18:15:01,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:01,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:01,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:01,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:01,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:01,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:01,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:01,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:15:01,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:01,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 18:15:01,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085416640] [2020-09-24 18:15:01,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:01,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:15:01,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041563992] [2020-09-24 18:15:01,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:15:01,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:01,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:15:01,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:15:01,722 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-24 18:15:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:01,819 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-24 18:15:01,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:15:01,820 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-24 18:15:01,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:01,821 INFO L225 Difference]: With dead ends: 35 [2020-09-24 18:15:01,822 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 18:15:01,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:15:01,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 18:15:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 18:15:01,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 18:15:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 18:15:01,829 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-24 18:15:01,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:01,829 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 18:15:01,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:15:01,830 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 18:15:01,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 18:15:01,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:01,831 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:01,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:15:01,832 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:01,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:01,832 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-24 18:15:01,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:01,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250703392] [2020-09-24 18:15:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:01,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 18:15:02,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-24 18:15:02,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:15:02,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 18:15:02,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:15:02,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:02,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:02,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:02,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:02,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:02,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-24 18:15:02,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:02,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:02,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:02,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:02,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:02,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-24 18:15:02,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:02,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:02,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:02,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 18:15:02,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:02,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:02,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:15:02,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 18:15:02,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250703392] [2020-09-24 18:15:02,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:02,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:15:02,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516690855] [2020-09-24 18:15:02,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:15:02,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:02,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:15:02,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:15:02,670 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-24 18:15:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:02,822 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 18:15:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:15:02,823 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-24 18:15:02,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:02,825 INFO L225 Difference]: With dead ends: 39 [2020-09-24 18:15:02,825 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 18:15:02,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:15:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 18:15:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-24 18:15:02,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 18:15:02,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 18:15:02,840 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-24 18:15:02,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:02,841 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 18:15:02,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:15:02,841 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 18:15:02,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 18:15:02,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:02,844 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:02,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:15:02,844 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:02,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:02,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-24 18:15:02,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:02,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513532948] [2020-09-24 18:15:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:03,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:03,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 18:15:03,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:03,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-09-24 18:15:03,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:15:03,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 18:15:03,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:15:03,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:03,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:03,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:03,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:03,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:03,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:03,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:03,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:03,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:03,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:03,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:03,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:03,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:03,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 18:15:03,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:03,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:03,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:03,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:03,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:03,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 18:15:03,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:03,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:03,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:03,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:03,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:03,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:03,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 18:15:03,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:03,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:03,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:03,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:03,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:03,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:03,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:15:03,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:03,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:03,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:03,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:03,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:03,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:03,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:15:03,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:03,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:03,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:03,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 18:15:03,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513532948] [2020-09-24 18:15:03,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:03,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 18:15:03,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31992300] [2020-09-24 18:15:03,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 18:15:03,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:03,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 18:15:03,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:15:03,989 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-24 18:15:04,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:04,155 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-24 18:15:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:15:04,155 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-24 18:15:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:04,157 INFO L225 Difference]: With dead ends: 43 [2020-09-24 18:15:04,157 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 18:15:04,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:15:04,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 18:15:04,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 18:15:04,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 18:15:04,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 18:15:04,164 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-24 18:15:04,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:04,165 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 18:15:04,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 18:15:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 18:15:04,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 18:15:04,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:04,167 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:04,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:15:04,167 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:04,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:04,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-24 18:15:04,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:04,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231953163] [2020-09-24 18:15:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:04,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:04,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 18:15:04,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:04,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-24 18:15:04,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 18:15:04,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 18:15:04,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:15:04,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:04,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:04,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:04,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:04,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:04,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:04,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:04,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:04,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:04,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:04,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:04,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:04,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:04,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:04,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:04,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-09-24 18:15:04,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:04,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:05,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:05,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:05,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:05,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:05,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-24 18:15:05,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:05,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:05,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:05,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:05,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-24 18:15:05,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:05,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:05,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:05,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:05,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:05,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 18:15:05,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:05,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:05,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:05,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:05,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:05,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:05,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 18:15:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:05,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:05,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:05,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:05,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:05,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:05,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:15:05,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:05,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 18:15:05,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231953163] [2020-09-24 18:15:05,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:05,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 18:15:05,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66823048] [2020-09-24 18:15:05,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 18:15:05,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:05,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 18:15:05,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:15:05,811 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-24 18:15:06,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:06,096 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-24 18:15:06,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 18:15:06,097 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-24 18:15:06,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:06,098 INFO L225 Difference]: With dead ends: 47 [2020-09-24 18:15:06,098 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 18:15:06,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-24 18:15:06,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 18:15:06,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 18:15:06,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:15:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 18:15:06,121 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-24 18:15:06,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:06,122 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 18:15:06,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 18:15:06,122 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 18:15:06,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 18:15:06,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:06,124 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:06,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:15:06,124 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:06,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:06,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-24 18:15:06,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:06,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678867845] [2020-09-24 18:15:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:06,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:06,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:06,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:15:06,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:06,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-09-24 18:15:06,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:06,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 18:15:06,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 18:15:06,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:15:06,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:06,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:06,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:06,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:06,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:06,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:06,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:06,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:06,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:06,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:06,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:06,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:06,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:06,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:07,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:07,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:07,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:07,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-24 18:15:07,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:07,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:07,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:07,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:07,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-24 18:15:07,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:07,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:07,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:07,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:07,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:07,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:07,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:07,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:07,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:07,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:07,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-24 18:15:07,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:07,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:07,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:07,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:07,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:07,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:07,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:07,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 18:15:07,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:07,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:07,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:07,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:07,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:07,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:07,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:08,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:08,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:08,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 18:15:08,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:08,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:08,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:08,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:08,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:08,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:08,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:08,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 18:15:08,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:08,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:08,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:08,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:08,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:08,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:08,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:15:08,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:08,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-24 18:15:08,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678867845] [2020-09-24 18:15:08,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:08,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 18:15:08,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171254474] [2020-09-24 18:15:08,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 18:15:08,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:08,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 18:15:08,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:15:08,279 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-24 18:15:08,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:08,613 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 18:15:08,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 18:15:08,614 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 18:15:08,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:08,616 INFO L225 Difference]: With dead ends: 51 [2020-09-24 18:15:08,616 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 18:15:08,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-24 18:15:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 18:15:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-24 18:15:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 18:15:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-24 18:15:08,627 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-24 18:15:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:08,630 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-24 18:15:08,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 18:15:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-24 18:15:08,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 18:15:08,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:08,632 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:08,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:15:08,635 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:08,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:08,636 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-24 18:15:08,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:08,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94160878] [2020-09-24 18:15:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:08,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:09,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:09,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:15:09,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-09-24 18:15:09,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 18:15:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 18:15:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:15:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:09,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:09,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:09,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:09,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:09,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:09,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:09,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:09,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:09,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:09,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:09,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:09,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:09,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:09,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:09,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-09-24 18:15:09,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:09,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:09,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:10,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:10,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:10,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:10,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:10,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-09-24 18:15:10,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:10,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:10,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:10,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:10,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:10,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:10,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:10,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:10,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-24 18:15:10,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:10,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:10,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:10,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:10,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:10,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:11,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:11,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-24 18:15:11,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:11,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:11,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:11,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:11,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:11,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:11,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:11,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:11,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 18:15:11,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:11,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:11,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:11,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:11,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:11,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:11,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:11,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:11,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 18:15:11,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:11,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:11,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:11,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:11,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:11,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:11,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:15:11,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:11,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:11,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:11,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:11,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:11,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:11,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:11,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:11,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:11,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:11,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:15:11,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:11,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:11,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-24 18:15:11,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94160878] [2020-09-24 18:15:11,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:11,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 18:15:11,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377669058] [2020-09-24 18:15:11,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 18:15:11,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:11,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 18:15:11,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:15:11,547 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-24 18:15:11,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:11,946 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-24 18:15:11,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 18:15:11,947 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-24 18:15:11,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:11,949 INFO L225 Difference]: With dead ends: 55 [2020-09-24 18:15:11,949 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 18:15:11,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-24 18:15:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 18:15:11,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 18:15:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 18:15:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 18:15:11,962 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-24 18:15:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:11,962 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 18:15:11,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 18:15:11,962 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 18:15:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 18:15:11,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:11,966 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:11,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:15:11,967 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:11,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:11,968 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-24 18:15:11,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:11,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409555154] [2020-09-24 18:15:11,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:11,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:12,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:12,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 18:15:12,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:12,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-09-24 18:15:12,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:12,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 18:15:12,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 18:15:12,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:15:12,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:12,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:12,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:12,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:12,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:12,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:12,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:12,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:12,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:12,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:13,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:13,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:13,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:13,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-09-24 18:15:13,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:13,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:13,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:13,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:13,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:13,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:13,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-09-24 18:15:13,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:13,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:14,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:14,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:14,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:14,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:14,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:14,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-09-24 18:15:14,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:14,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:14,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:14,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:14,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:14,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:14,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-24 18:15:14,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:14,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:14,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:14,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:14,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:14,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-24 18:15:14,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:14,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:14,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:14,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:15,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:15,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:15,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:15,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:15,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 18:15:15,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:15,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:15,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:15,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:15,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:15,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:15,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:15,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:15,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 18:15:15,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:15,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:15,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:15,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:15,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:15,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:15,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:15,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:15:15,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:15,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:15,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:15,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:15,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:15,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:15:15,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:15,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:15,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:15,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 18:15:15,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409555154] [2020-09-24 18:15:15,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:15,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 18:15:15,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894833787] [2020-09-24 18:15:15,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 18:15:15,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:15,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 18:15:15,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-24 18:15:15,525 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 18:15:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:16,058 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 18:15:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 18:15:16,059 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 18:15:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:16,060 INFO L225 Difference]: With dead ends: 59 [2020-09-24 18:15:16,060 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 18:15:16,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-24 18:15:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 18:15:16,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 18:15:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:15:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-24 18:15:16,069 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-24 18:15:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:16,069 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-24 18:15:16,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 18:15:16,070 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-24 18:15:16,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 18:15:16,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:16,071 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:16,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:15:16,071 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:16,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:16,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-24 18:15:16,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:16,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799597998] [2020-09-24 18:15:16,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:16,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:16,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:16,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 18:15:16,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:16,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-09-24 18:15:16,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:16,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 18:15:16,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 18:15:16,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:16,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:17,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:17,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:17,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:17,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:17,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:17,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:17,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:17,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:17,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:17,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:15:17,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:17,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-09-24 18:15:17,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 18:15:17,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:15:17,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:17,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:18,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:18,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:18,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:18,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-09-24 18:15:18,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:18,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:18,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:18,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:18,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:18,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:18,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:18,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:18,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-09-24 18:15:18,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:18,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:18,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:18,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:18,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:18,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:19,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:19,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:19,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:19,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-24 18:15:19,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:19,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:19,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:19,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:19,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:19,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:19,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:19,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:19,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:19,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-24 18:15:19,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:19,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:19,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:19,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:19,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:19,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:19,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:19,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:19,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:19,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 18:15:19,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:19,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:19,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:19,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:19,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:19,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:19,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:19,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 18:15:19,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:19,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:19,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:19,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:19,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:20,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:20,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:20,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:20,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 18:15:20,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:20,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:20,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:20,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:20,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:20,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:20,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:20,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:15:20,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:20,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:20,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:20,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:20,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:20,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:20,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:20,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:20,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:15:20,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:20,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-24 18:15:20,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799597998] [2020-09-24 18:15:20,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:20,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 18:15:20,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200673703] [2020-09-24 18:15:20,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 18:15:20,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:20,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 18:15:20,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-24 18:15:20,324 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-24 18:15:20,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:20,974 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-24 18:15:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 18:15:20,975 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-24 18:15:20,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:20,976 INFO L225 Difference]: With dead ends: 63 [2020-09-24 18:15:20,976 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 18:15:20,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 18:15:20,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 18:15:20,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 18:15:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 18:15:20,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 18:15:20,986 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-24 18:15:20,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:20,987 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 18:15:20,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 18:15:20,987 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 18:15:20,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 18:15:20,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:20,989 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:20,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:15:20,989 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:20,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:20,989 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-24 18:15:20,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:20,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421504594] [2020-09-24 18:15:20,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:21,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:21,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:21,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 18:15:21,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:21,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 964 [2020-09-24 18:15:21,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:21,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 18:15:21,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 18:15:21,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:15:21,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:22,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:22,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:22,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:22,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:15:22,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:22,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:22,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:22,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:22,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:22,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 18:15:22,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:22,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-09-24 18:15:22,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 18:15:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 18:15:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:22,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:23,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:23,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:15:23,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:23,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-09-24 18:15:23,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 18:15:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:15:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:23,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:23,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:24,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:24,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:24,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:24,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-09-24 18:15:24,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:24,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:24,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:24,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:24,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:24,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-09-24 18:15:24,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:24,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:24,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:24,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:24,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:24,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:24,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:24,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-24 18:15:24,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:24,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:24,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:25,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:25,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:25,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:25,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-24 18:15:25,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:25,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:25,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:25,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:25,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:25,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:25,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:25,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:25,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:25,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-24 18:15:25,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:25,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:25,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:25,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:25,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:25,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:25,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 18:15:25,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:25,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:25,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:25,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:25,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:25,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:25,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 18:15:25,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:25,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:25,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:25,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:25,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:25,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:25,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:25,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:15:25,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:25,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:25,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:25,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:25,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:25,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:15:25,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:25,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:25,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:25,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:25,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-24 18:15:26,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421504594] [2020-09-24 18:15:26,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:26,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 18:15:26,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025723351] [2020-09-24 18:15:26,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 18:15:26,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:26,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 18:15:26,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-24 18:15:26,020 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-24 18:15:26,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:26,771 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-24 18:15:26,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 18:15:26,772 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-24 18:15:26,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:26,773 INFO L225 Difference]: With dead ends: 67 [2020-09-24 18:15:26,774 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 18:15:26,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 18:15:26,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 18:15:26,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 18:15:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 18:15:26,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-24 18:15:26,782 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-24 18:15:26,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:26,783 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-24 18:15:26,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 18:15:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-24 18:15:26,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-24 18:15:26,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:26,784 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:26,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 18:15:26,785 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:26,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:26,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-24 18:15:26,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:26,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292228534] [2020-09-24 18:15:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:26,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:27,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:27,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-24 18:15:27,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-09-24 18:15:27,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 18:15:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 18:15:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 18:15:27,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:27,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:27,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:27,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:27,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:27,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:27,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:27,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:27,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:27,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:28,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:28,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 18:15:28,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:28,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-09-24 18:15:28,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 18:15:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 18:15:28,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:28,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:28,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:29,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:29,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 18:15:29,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:29,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-09-24 18:15:29,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:29,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 18:15:29,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:29,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 18:15:29,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:29,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:29,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:30,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:30,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:15:30,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:30,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-09-24 18:15:30,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 18:15:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:15:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:30,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:30,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:30,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:30,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:30,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-24 18:15:30,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:30,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:31,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:31,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:31,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:31,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:31,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:31,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-24 18:15:31,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:31,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:31,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:31,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:31,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-24 18:15:31,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:31,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:32,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:32,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:32,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:32,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-24 18:15:32,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:32,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:32,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:32,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:32,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:32,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:32,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 18:15:32,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:32,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:32,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:32,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:32,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:32,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:32,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:32,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:32,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:32,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 18:15:32,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:32,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:32,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:32,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:32,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:32,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:32,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 18:15:32,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:32,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:32,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:32,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:32,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:32,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:32,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:15:32,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:32,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:32,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:32,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:32,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:32,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:15:32,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:32,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-24 18:15:32,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292228534] [2020-09-24 18:15:32,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:32,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 18:15:32,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164836819] [2020-09-24 18:15:32,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 18:15:32,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:32,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 18:15:32,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-24 18:15:32,874 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-24 18:15:33,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:33,740 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-24 18:15:33,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-24 18:15:33,741 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-24 18:15:33,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:33,742 INFO L225 Difference]: With dead ends: 71 [2020-09-24 18:15:33,743 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 18:15:33,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 18:15:33,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 18:15:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 18:15:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 18:15:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-24 18:15:33,751 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-24 18:15:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:33,751 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-24 18:15:33,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 18:15:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-24 18:15:33,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-24 18:15:33,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:33,752 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:33,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 18:15:33,753 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:33,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-24 18:15:33,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:33,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745228429] [2020-09-24 18:15:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:35,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:35,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 18:15:35,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:35,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1313 [2020-09-24 18:15:35,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 18:15:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 18:15:35,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 18:15:35,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:35,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:35,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:35,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:35,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:35,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:15:35,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:35,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:35,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:35,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:35,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:35,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:36,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:36,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 18:15:36,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1076 [2020-09-24 18:15:36,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 18:15:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 18:15:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:36,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:37,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:37,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 18:15:37,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:37,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1346 [2020-09-24 18:15:37,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 18:15:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 18:15:37,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:37,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:37,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:38,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:38,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 18:15:38,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:38,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-09-24 18:15:38,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 18:15:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 18:15:38,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:38,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:38,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:39,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:39,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:15:39,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:39,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-09-24 18:15:39,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 18:15:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:15:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:39,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:39,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:39,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:39,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:39,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-24 18:15:39,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:39,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:39,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:40,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:40,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:40,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:40,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-09-24 18:15:40,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:40,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:40,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:40,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:40,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:40,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:40,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:40,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:40,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:40,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-24 18:15:40,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:40,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:40,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:40,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:40,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:40,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:40,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:40,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:40,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:40,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-24 18:15:40,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:40,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:40,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:40,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:40,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:41,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:41,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:41,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:41,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:41,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:41,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-24 18:15:41,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:41,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:41,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:41,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:41,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:41,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:41,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:41,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 18:15:41,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:41,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:41,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:41,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:41,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:41,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:41,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:41,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 18:15:41,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:41,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:41,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:41,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:41,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:41,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:41,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:15:41,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:41,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:41,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:41,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:41,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:41,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:41,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:41,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:15:41,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:41,821 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-24 18:15:41,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745228429] [2020-09-24 18:15:41,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:41,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 18:15:41,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838719065] [2020-09-24 18:15:41,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 18:15:41,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:41,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 18:15:41,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-24 18:15:41,824 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-24 18:15:42,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:42,986 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-24 18:15:42,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-24 18:15:42,987 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-24 18:15:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:42,988 INFO L225 Difference]: With dead ends: 75 [2020-09-24 18:15:42,988 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 18:15:42,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 18:15:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 18:15:43,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-24 18:15:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 18:15:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-24 18:15:43,014 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-24 18:15:43,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:43,014 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-24 18:15:43,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 18:15:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-24 18:15:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 18:15:43,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:43,019 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:43,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 18:15:43,019 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:43,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:43,020 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-24 18:15:43,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:43,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799792588] [2020-09-24 18:15:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:43,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:44,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:44,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 18:15:44,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:44,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1582 [2020-09-24 18:15:44,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 18:15:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 18:15:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 18:15:44,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:44,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:44,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:44,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:44,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:44,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:44,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:44,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:46,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:46,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 18:15:46,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:46,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-09-24 18:15:46,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:46,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 18:15:46,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:46,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 18:15:46,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:46,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:46,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:47,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:47,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 18:15:47,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-09-24 18:15:47,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 18:15:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 18:15:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:47,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:47,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:48,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:48,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 18:15:48,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1063 [2020-09-24 18:15:48,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 18:15:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 18:15:48,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:48,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:48,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:49,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:49,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 18:15:49,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-09-24 18:15:49,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 18:15:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 18:15:49,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:49,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:49,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:49,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:49,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:15:49,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:49,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-09-24 18:15:49,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:49,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 18:15:49,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:49,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:15:49,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:49,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:49,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:50,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:50,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:50,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-09-24 18:15:50,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:50,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:50,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:50,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:50,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-24 18:15:50,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:50,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:50,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:51,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:51,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:51,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 18:15:51,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:51,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:51,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:51,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:51,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:51,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:51,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 18:15:51,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:51,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:51,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:51,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:51,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:51,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:51,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:51,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:51,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:51,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 18:15:51,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:51,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:51,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:51,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:51,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:51,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:51,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:51,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:51,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:51,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 18:15:51,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:51,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:51,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:51,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:51,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:51,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:51,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:51,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:15:51,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:51,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:51,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:51,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:51,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:51,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:52,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:52,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:52,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:52,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:15:52,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:52,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:52,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:52,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:52,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:52,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:52,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:52,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:15:52,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:52,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-24 18:15:52,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799792588] [2020-09-24 18:15:52,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:52,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-24 18:15:52,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927325180] [2020-09-24 18:15:52,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-24 18:15:52,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:52,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-24 18:15:52,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-24 18:15:52,264 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-24 18:15:53,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:53,379 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-24 18:15:53,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-24 18:15:53,379 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-24 18:15:53,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:53,380 INFO L225 Difference]: With dead ends: 79 [2020-09-24 18:15:53,381 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 18:15:53,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 18:15:53,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 18:15:53,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 18:15:53,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 18:15:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-24 18:15:53,389 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-24 18:15:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:53,390 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-24 18:15:53,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-24 18:15:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-24 18:15:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 18:15:53,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:53,391 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:53,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 18:15:53,392 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:53,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-24 18:15:53,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:53,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929728210] [2020-09-24 18:15:53,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking...