/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=HIGHLEXORDER --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_o10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:41:02,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:41:02,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:41:02,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:41:02,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:41:02,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:41:02,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:41:02,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:41:02,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:41:02,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:41:02,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:41:02,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:41:02,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:41:02,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:41:02,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:41:02,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:41:02,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:41:02,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:41:02,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:41:02,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:41:02,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:41:02,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:41:02,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:41:02,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:41:02,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:41:02,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:41:02,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:41:02,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:41:02,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:41:02,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:41:02,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:41:02,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:41:02,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:41:02,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:41:02,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:41:02,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:41:02,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:41:02,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:41:02,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:41:02,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:41:02,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:41:02,313 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 22:41:02,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:41:02,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:41:02,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:41:02,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:41:02,341 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:41:02,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:41:02,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:41:02,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:41:02,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:41:02,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:41:02,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:41:02,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:41:02,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:41:02,343 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:41:02,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:41:02,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:41:02,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:41:02,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:41:02,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:41:02,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:41:02,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:41:02,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:41:02,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:41:02,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:41:02,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:41:02,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:41:02,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:41:02,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:41:02,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:41:02,346 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:41:02,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:41:02,848 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:41:02,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:41:02,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:41:02,854 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:41:02,856 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o10.c [2020-09-24 22:41:02,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/961fa5d46/ee999c9c79a748e5a6a286a301da48f4/FLAGb2eff8885 [2020-09-24 22:41:03,538 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:41:03,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o10.c [2020-09-24 22:41:03,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/961fa5d46/ee999c9c79a748e5a6a286a301da48f4/FLAGb2eff8885 [2020-09-24 22:41:03,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/961fa5d46/ee999c9c79a748e5a6a286a301da48f4 [2020-09-24 22:41:03,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:41:03,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:41:03,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:41:03,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:41:03,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:41:03,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:41:03" (1/1) ... [2020-09-24 22:41:03,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d5a492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:41:03, skipping insertion in model container [2020-09-24 22:41:03,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:41:03" (1/1) ... [2020-09-24 22:41:03,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:41:03,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:41:04,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:41:04,114 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:41:04,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:41:04,151 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:41:04,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:41:04 WrapperNode [2020-09-24 22:41:04,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:41:04,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:41:04,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:41:04,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:41:04,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:41:04" (1/1) ... [2020-09-24 22:41:04,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:41:04" (1/1) ... [2020-09-24 22:41:04,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:41:04" (1/1) ... [2020-09-24 22:41:04,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:41:04" (1/1) ... [2020-09-24 22:41:04,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:41:04" (1/1) ... [2020-09-24 22:41:04,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:41:04" (1/1) ... [2020-09-24 22:41:04,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:41:04" (1/1) ... [2020-09-24 22:41:04,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:41:04,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:41:04,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:41:04,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:41:04,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:41:04" (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 22:41:04,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:41:04,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:41:04,345 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 22:41:04,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:41:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 22:41:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:41:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 22:41:04,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:41:04,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:41:04,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:41:04,533 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:41:04,534 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:41:04,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:41:04 BoogieIcfgContainer [2020-09-24 22:41:04,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:41:04,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:41:04,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:41:04,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:41:04,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:41:03" (1/3) ... [2020-09-24 22:41:04,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33adfc96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:41:04, skipping insertion in model container [2020-09-24 22:41:04,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:41:04" (2/3) ... [2020-09-24 22:41:04,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33adfc96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:41:04, skipping insertion in model container [2020-09-24 22:41:04,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:41:04" (3/3) ... [2020-09-24 22:41:04,556 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o10.c [2020-09-24 22:41:04,568 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:41:04,579 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:41:04,601 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:41:04,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:41:04,640 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:41:04,640 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:41:04,642 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:41:04,642 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:41:04,642 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:41:04,643 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:41:04,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:41:04,663 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-24 22:41:04,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:41:04,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:04,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:41:04,671 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:04,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:04,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-24 22:41:04,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:04,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348791153] [2020-09-24 22:41:04,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:04,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:04,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:04,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:41:04,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:04,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 22:41:04,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:04,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:41:04,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:41:04,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:41:04,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:41:04,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:04,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:04,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:04,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:04,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:41:04,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 22:41:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:05,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:05,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:05,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:41:05,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:41:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:05,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:41:05,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:05,064 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 22:41:05,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348791153] [2020-09-24 22:41:05,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:41:05,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:41:05,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775753304] [2020-09-24 22:41:05,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:41:05,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:05,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:41:05,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:41:05,108 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-24 22:41:05,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:05,180 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 22:41:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:41:05,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:41:05,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:05,197 INFO L225 Difference]: With dead ends: 37 [2020-09-24 22:41:05,198 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 22:41:05,202 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 22:41:05,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 22:41:05,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-24 22:41:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 22:41:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-24 22:41:05,254 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-24 22:41:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:05,255 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-24 22:41:05,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:41:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-24 22:41:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 22:41:05,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:05,257 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 22:41:05,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:41:05,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:05,259 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-24 22:41:05,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:05,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75108793] [2020-09-24 22:41:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:05,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:05,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:41:05,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 22:41:05,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:41:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:41:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 22:41:05,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:05,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:05,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:05,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:41:05,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:05,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:05,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 22:41:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:05,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:41:05,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:05,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 22:41:05,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:41:05,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:05,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:05,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:05,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:05,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 22:41:05,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:41:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:41:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:05,799 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 22:41:05,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75108793] [2020-09-24 22:41:05,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:05,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:41:05,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48785052] [2020-09-24 22:41:05,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:41:05,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:05,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:41:05,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:41:05,810 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-24 22:41:05,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:05,908 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-24 22:41:05,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 22:41:05,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-24 22:41:05,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:05,910 INFO L225 Difference]: With dead ends: 31 [2020-09-24 22:41:05,910 INFO L226 Difference]: Without dead ends: 26 [2020-09-24 22:41:05,912 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 22:41:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-24 22:41:05,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-24 22:41:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 22:41:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-24 22:41:05,920 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-24 22:41:05,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:05,921 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-24 22:41:05,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:41:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-24 22:41:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 22:41:05,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:05,923 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 22:41:05,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:41:05,923 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:05,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:05,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-24 22:41:05,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:05,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102900582] [2020-09-24 22:41:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:05,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:06,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 22:41:06,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-24 22:41:06,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:41:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 22:41:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 22:41:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:06,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:06,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:06,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:41:06,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:06,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 22:41:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:06,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 22:41:06,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:06,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 22:41:06,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:41:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 22:41:06,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:06,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:41:06,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:06,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 22:41:06,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:06,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:06,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:06,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:41:06,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:06,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:06,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:06,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:06,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:41:06,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:41:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:41:06,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:06,561 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 22:41:06,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102900582] [2020-09-24 22:41:06,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:06,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:41:06,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957598141] [2020-09-24 22:41:06,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:41:06,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:06,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:41:06,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:41:06,564 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-24 22:41:06,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:06,654 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-24 22:41:06,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:41:06,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-24 22:41:06,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:06,656 INFO L225 Difference]: With dead ends: 35 [2020-09-24 22:41:06,657 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:41:06,657 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 22:41:06,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:41:06,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 22:41:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 22:41:06,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 22:41:06,664 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-24 22:41:06,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:06,665 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 22:41:06,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:41:06,665 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 22:41:06,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 22:41:06,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:06,667 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 22:41:06,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:41:06,667 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:06,668 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-24 22:41:06,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:06,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129205677] [2020-09-24 22:41:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:06,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 22:41:06,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:06,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-24 22:41:06,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:06,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:41:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 22:41:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 22:41:06,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:06,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:06,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:06,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:06,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:41:06,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 22:41:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:07,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:07,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 22:41:07,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:07,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-24 22:41:07,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:07,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:41:07,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 22:41:07,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:07,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:07,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:07,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:07,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 22:41:07,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:07,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 22:41:07,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:07,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:41:07,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 22:41:07,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:07,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:07,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:07,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:07,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:41:07,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:07,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 22:41:07,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:41:07,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:07,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:07,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:07,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:07,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:07,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:41:07,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:41:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:41:07,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:07,516 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 22:41:07,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129205677] [2020-09-24 22:41:07,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:07,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:41:07,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707203890] [2020-09-24 22:41:07,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:41:07,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:07,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:41:07,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:41:07,524 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-24 22:41:07,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:07,700 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 22:41:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 22:41:07,702 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-24 22:41:07,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:07,704 INFO L225 Difference]: With dead ends: 39 [2020-09-24 22:41:07,704 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 22:41:07,705 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 22:41:07,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 22:41:07,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-24 22:41:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 22:41:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 22:41:07,718 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-24 22:41:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:07,718 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 22:41:07,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:41:07,720 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 22:41:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 22:41:07,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:07,722 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 22:41:07,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:41:07,723 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:07,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:07,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-24 22:41:07,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:07,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635020865] [2020-09-24 22:41:07,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:07,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:08,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:08,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 22:41:08,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:08,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-24 22:41:08,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:41:08,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 22:41:08,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:41:08,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:08,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:08,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:08,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:08,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:08,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:41:08,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:08,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:08,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:08,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:08,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:08,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 22:41:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:08,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:08,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:08,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:41:08,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:08,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-24 22:41:08,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:08,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:41:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:41:08,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:08,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:08,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:08,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:08,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 22:41:08,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:08,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 22:41:08,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:41:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 22:41:08,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:08,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:08,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:08,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 22:41:08,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:08,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 22:41:08,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:41:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 22:41:08,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:08,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:08,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:08,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:08,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:41:08,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:08,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 22:41:08,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:41:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:08,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:08,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:08,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:08,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:08,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:41:08,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:41:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:41:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:08,881 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 22:41:08,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635020865] [2020-09-24 22:41:08,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:08,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 22:41:08,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437083414] [2020-09-24 22:41:08,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:41:08,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:08,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:41:08,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:41:08,884 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-24 22:41:09,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:09,135 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-24 22:41:09,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 22:41:09,136 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-24 22:41:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:09,138 INFO L225 Difference]: With dead ends: 43 [2020-09-24 22:41:09,139 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 22:41:09,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:41:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 22:41:09,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 22:41:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 22:41:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 22:41:09,155 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-24 22:41:09,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:09,156 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 22:41:09,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:41:09,156 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 22:41:09,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 22:41:09,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:09,165 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 22:41:09,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:41:09,166 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:09,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:09,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-24 22:41:09,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:09,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105993689] [2020-09-24 22:41:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:09,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:09,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:09,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 22:41:09,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:09,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-24 22:41:09,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:41:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 22:41:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 22:41:09,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:09,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:09,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:09,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:09,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:09,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:41:09,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:09,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:09,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:09,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:09,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:09,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 22:41:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:09,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:09,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 22:41:09,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-24 22:41:09,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 22:41:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:09,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:41:09,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:09,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:09,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:10,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:10,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:41:10,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:10,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-24 22:41:10,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:41:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:41:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:10,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:10,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:10,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 22:41:10,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:10,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-24 22:41:10,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:10,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:41:10,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:10,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 22:41:10,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:10,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:10,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:10,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:10,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 22:41:10,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:10,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 22:41:10,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:41:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 22:41:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:10,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:10,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:10,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:10,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:41:10,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 22:41:10,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:41:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:10,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:10,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:10,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:10,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:41:10,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:41:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:41:10,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:10,721 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 22:41:10,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105993689] [2020-09-24 22:41:10,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:10,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 22:41:10,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269080281] [2020-09-24 22:41:10,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 22:41:10,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:10,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 22:41:10,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:41:10,725 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-24 22:41:10,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:10,973 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-24 22:41:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 22:41:10,973 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-24 22:41:10,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:10,975 INFO L225 Difference]: With dead ends: 47 [2020-09-24 22:41:10,975 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 22:41:10,976 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 22:41:10,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 22:41:10,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 22:41:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:41:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 22:41:10,982 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-24 22:41:10,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:10,982 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 22:41:10,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 22:41:10,983 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 22:41:10,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:41:10,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:10,984 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 22:41:10,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:41:10,985 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:10,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:10,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-24 22:41:10,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:10,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891229758] [2020-09-24 22:41:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:11,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:11,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 22:41:11,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:11,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-09-24 22:41:11,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 22:41:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 22:41:11,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:41:11,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:11,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:11,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:41:11,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:11,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:11,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:11,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 22:41:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:11,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:12,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:12,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 22:41:12,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:12,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-24 22:41:12,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:12,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 22:41:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 22:41:12,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:12,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:12,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:12,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:12,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 22:41:12,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-24 22:41:12,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 22:41:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:41:12,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:12,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:12,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:12,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:12,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:41:12,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:12,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-24 22:41:12,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:41:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:41:12,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:12,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:12,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:12,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 22:41:12,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:12,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 22:41:12,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:41:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 22:41:12,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:12,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:12,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:12,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 22:41:12,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:12,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 22:41:12,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:41:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 22:41:12,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:13,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:13,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:41:13,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:13,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 22:41:13,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:13,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:41:13,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:13,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:13,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:13,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:13,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:13,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:13,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:41:13,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:41:13,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:13,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:41:13,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:13,160 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 22:41:13,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891229758] [2020-09-24 22:41:13,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:13,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 22:41:13,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78097673] [2020-09-24 22:41:13,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 22:41:13,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:13,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 22:41:13,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:41:13,163 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-24 22:41:13,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:13,441 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 22:41:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 22:41:13,441 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 22:41:13,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:13,443 INFO L225 Difference]: With dead ends: 51 [2020-09-24 22:41:13,444 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:41:13,444 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 22:41:13,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:41:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-24 22:41:13,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 22:41:13,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-24 22:41:13,455 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-24 22:41:13,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:13,455 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-24 22:41:13,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 22:41:13,456 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-24 22:41:13,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 22:41:13,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:13,460 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 22:41:13,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:41:13,460 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:13,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:13,463 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-24 22:41:13,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:13,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984517440] [2020-09-24 22:41:13,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:13,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:14,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:14,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 22:41:14,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:14,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-24 22:41:14,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:14,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 22:41:14,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 22:41:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 22:41:14,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:14,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:14,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:14,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:14,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:14,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:41:14,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:14,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:14,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:14,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 22:41:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:14,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:14,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 22:41:14,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:14,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-09-24 22:41:14,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:41:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 22:41:14,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:14,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:14,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:15,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:15,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 22:41:15,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:15,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-09-24 22:41:15,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 22:41:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:15,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 22:41:15,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:15,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:15,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:15,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 22:41:15,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-24 22:41:15,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 22:41:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:41:15,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:15,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:15,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:15,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:15,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:41:15,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:15,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 22:41:15,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:41:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:41:15,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:15,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:15,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:15,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 22:41:15,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 22:41:15,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:41:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 22:41:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:15,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:15,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:16,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:16,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 22:41:16,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 22:41:16,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:41:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 22:41:16,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:16,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:16,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:16,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:16,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:41:16,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 22:41:16,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:41:16,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:16,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:16,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:16,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:16,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:16,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:16,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:41:16,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:41:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:41:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:16,338 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 22:41:16,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984517440] [2020-09-24 22:41:16,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:16,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 22:41:16,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173979154] [2020-09-24 22:41:16,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 22:41:16,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:16,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 22:41:16,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-24 22:41:16,341 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-24 22:41:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:16,681 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-24 22:41:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 22:41:16,681 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-24 22:41:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:16,682 INFO L225 Difference]: With dead ends: 55 [2020-09-24 22:41:16,683 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 22:41:16,684 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 22:41:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 22:41:16,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 22:41:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 22:41:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 22:41:16,696 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-24 22:41:16,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:16,698 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 22:41:16,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 22:41:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 22:41:16,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 22:41:16,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:16,699 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 22:41:16,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:41:16,700 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:16,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:16,700 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-24 22:41:16,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:16,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956375269] [2020-09-24 22:41:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:16,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:17,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 22:41:17,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:17,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-09-24 22:41:17,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 22:41:17,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 22:41:17,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:41:17,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:17,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:17,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:17,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:17,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:41:17,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:17,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 22:41:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:17,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:18,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:18,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 22:41:18,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:18,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-09-24 22:41:18,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 22:41:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 22:41:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:18,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:18,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:18,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:18,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 22:41:18,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:18,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-09-24 22:41:18,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:18,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:41:18,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:18,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 22:41:18,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:18,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:19,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:19,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 22:41:19,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:19,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-24 22:41:19,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:19,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 22:41:19,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:19,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 22:41:19,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:19,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:19,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:19,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:19,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 22:41:19,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:19,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-24 22:41:19,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 22:41:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:41:19,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:19,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:19,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:19,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:19,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:41:19,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:19,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 22:41:19,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:41:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:41:19,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:19,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:19,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:19,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 22:41:19,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:19,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 22:41:19,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:41:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 22:41:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:19,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:19,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:19,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:19,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 22:41:19,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:19,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 22:41:19,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:19,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:41:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 22:41:19,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:19,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:19,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:19,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:19,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:41:19,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:19,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 22:41:19,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:19,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:19,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:19,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:41:19,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:20,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:20,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:20,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:20,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:20,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:41:20,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:41:20,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:20,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:41:20,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:41:20,246 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 22:41:20,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956375269] [2020-09-24 22:41:20,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:20,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 22:41:20,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871965913] [2020-09-24 22:41:20,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 22:41:20,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:20,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 22:41:20,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:41:20,259 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 22:41:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:20,763 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 22:41:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 22:41:20,764 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 22:41:20,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:20,766 INFO L225 Difference]: With dead ends: 59 [2020-09-24 22:41:20,766 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:41:20,767 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 22:41:20,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:41:20,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 22:41:20,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:41:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-24 22:41:20,782 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-24 22:41:20,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:20,783 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-24 22:41:20,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 22:41:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-24 22:41:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 22:41:20,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:20,784 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 22:41:20,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:41:20,784 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:20,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:20,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-24 22:41:20,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:20,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502692011] [2020-09-24 22:41:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:20,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:21,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:21,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 22:41:21,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-09-24 22:41:21,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 22:41:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 22:41:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:41:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:21,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:21,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:21,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:21,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:21,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:41:21,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:21,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 22:41:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:21,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:22,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 22:41:22,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:22,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-09-24 22:41:22,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 22:41:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 22:41:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:22,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:22,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:23,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:23,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 22:41:23,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:23,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-09-24 22:41:23,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 22:41:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 22:41:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:23,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:23,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:23,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:23,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 22:41:23,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:23,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-24 22:41:23,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:41:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 22:41:23,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:23,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:23,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:24,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:24,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 22:41:24,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:24,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-09-24 22:41:24,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:24,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 22:41:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 22:41:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:24,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:24,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:24,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:24,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 22:41:24,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:24,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-24 22:41:24,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 22:41:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:41:24,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:24,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:24,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:24,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:24,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:41:24,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:24,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 22:41:24,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:41:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:41:24,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:24,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:24,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:24,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 22:41:24,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:24,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 22:41:24,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:24,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:41:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 22:41:24,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:24,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:24,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:24,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 22:41:24,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:24,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 22:41:24,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:24,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:41:24,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:24,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 22:41:24,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:24,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:24,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:24,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:24,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:41:24,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:24,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 22:41:24,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:41:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:41:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:41:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:25,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:25,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:25,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:25,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:41:25,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:25,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:41:25,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:25,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:41:25,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:25,113 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 22:41:25,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502692011] [2020-09-24 22:41:25,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:25,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 22:41:25,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132907072] [2020-09-24 22:41:25,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 22:41:25,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:25,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 22:41:25,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-24 22:41:25,116 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-24 22:41:25,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:25,745 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-24 22:41:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 22:41:25,749 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-24 22:41:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:25,751 INFO L225 Difference]: With dead ends: 63 [2020-09-24 22:41:25,751 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 22:41:25,753 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 22:41:25,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 22:41:25,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 22:41:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 22:41:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 22:41:25,761 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-24 22:41:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:25,762 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 22:41:25,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 22:41:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 22:41:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 22:41:25,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:25,763 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 22:41:25,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:41:25,763 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:25,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:25,764 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-24 22:41:25,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:25,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523352622] [2020-09-24 22:41:25,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:41:25,784 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:41:25,785 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:41:25,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 22:41:25,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:41:25 BoogieIcfgContainer [2020-09-24 22:41:25,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:41:25,816 INFO L168 Benchmark]: Toolchain (without parser) took 21967.34 ms. Allocated memory was 138.9 MB in the beginning and 464.0 MB in the end (delta: 325.1 MB). Free memory was 102.7 MB in the beginning and 134.7 MB in the end (delta: -32.1 MB). Peak memory consumption was 293.0 MB. Max. memory is 7.1 GB. [2020-09-24 22:41:25,816 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-24 22:41:25,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.16 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2020-09-24 22:41:25,818 INFO L168 Benchmark]: Boogie Preprocessor took 31.30 ms. Allocated memory is still 138.9 MB. Free memory was 92.8 MB in the beginning and 91.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:41:25,819 INFO L168 Benchmark]: RCFGBuilder took 356.15 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 170.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:41:25,820 INFO L168 Benchmark]: TraceAbstraction took 21268.66 ms. Allocated memory was 201.9 MB in the beginning and 464.0 MB in the end (delta: 262.1 MB). Free memory was 169.3 MB in the beginning and 134.7 MB in the end (delta: 34.6 MB). Peak memory consumption was 296.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:41:25,823 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.16 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.30 ms. Allocated memory is still 138.9 MB. Free memory was 92.8 MB in the beginning and 91.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 356.15 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 170.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21268.66 ms. Allocated memory was 201.9 MB in the beginning and 464.0 MB in the end (delta: 262.1 MB). Free memory was 169.3 MB in the beginning and 134.7 MB in the end (delta: 34.6 MB). Peak memory consumption was 296.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] unsigned int input = __VERIFIER_nondet_uint(); [L11] CALL, EXPR id(input) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND TRUE x==0 [L5] return 0; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] unsigned int result = id(input); [L12] COND TRUE result == 10 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.1s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 57 SDslu, 3501 SDs, 0 SdLazy, 1432 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 561 NumberOfCodeBlocks, 561 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 465 ConstructedInterpolants, 0 QuantifiedInterpolants, 106195 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/1020 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...