/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o200.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:05:13,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:05:13,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:05:13,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:05:13,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:05:13,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:05:13,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:05:13,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:05:13,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:05:13,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:05:13,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:05:13,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:05:13,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:05:13,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:05:13,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:05:13,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:05:13,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:05:13,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:05:13,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:05:13,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:05:13,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:05:13,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:05:13,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:05:13,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:05:13,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:05:13,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:05:13,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:05:13,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:05:13,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:05:13,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:05:13,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:05:13,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:05:13,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:05:13,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:05:13,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:05:13,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:05:13,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:05:13,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:05:13,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:05:13,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:05:13,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:05:13,370 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 17:05:13,396 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:05:13,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:05:13,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:05:13,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:05:13,398 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:05:13,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:05:13,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:05:13,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:05:13,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:05:13,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:05:13,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:05:13,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:05:13,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:05:13,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:05:13,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:05:13,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:05:13,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:05:13,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:05:13,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:05:13,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:05:13,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:05:13,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:05:13,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:05:13,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:05:13,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:05:13,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:05:13,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:05:13,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:05:13,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:05:13,406 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;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;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;log-additional-information=true; [2020-09-24 17:05:13,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:05:13,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:05:13,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:05:13,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:05:13,919 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:05:13,921 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-24 17:05:14,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/125800473/eca011ef65344cd59ed0ae9d851acc7b/FLAGefd2f373d [2020-09-24 17:05:14,560 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:05:14,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-24 17:05:14,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/125800473/eca011ef65344cd59ed0ae9d851acc7b/FLAGefd2f373d [2020-09-24 17:05:14,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/125800473/eca011ef65344cd59ed0ae9d851acc7b [2020-09-24 17:05:14,924 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:05:14,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:05:14,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:05:14,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:05:14,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:05:14,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:05:14" (1/1) ... [2020-09-24 17:05:14,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d8d2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:14, skipping insertion in model container [2020-09-24 17:05:14,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:05:14" (1/1) ... [2020-09-24 17:05:14,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:05:14,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:05:15,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:05:15,188 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:05:15,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:05:15,225 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:05:15,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:15 WrapperNode [2020-09-24 17:05:15,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:05:15,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:05:15,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:05:15,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:05:15,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:15" (1/1) ... [2020-09-24 17:05:15,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:15" (1/1) ... [2020-09-24 17:05:15,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:15" (1/1) ... [2020-09-24 17:05:15,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:15" (1/1) ... [2020-09-24 17:05:15,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:15" (1/1) ... [2020-09-24 17:05:15,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:15" (1/1) ... [2020-09-24 17:05:15,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:15" (1/1) ... [2020-09-24 17:05:15,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:05:15,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:05:15,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:05:15,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:05:15,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:15" (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 17:05:15,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:05:15,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:05:15,421 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 17:05:15,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:05:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 17:05:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:05:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 17:05:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:05:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:05:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:05:15,608 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:05:15,609 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:05:15,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:05:15 BoogieIcfgContainer [2020-09-24 17:05:15,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:05:15,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:05:15,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:05:15,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:05:15,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:05:14" (1/3) ... [2020-09-24 17:05:15,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288e5b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:05:15, skipping insertion in model container [2020-09-24 17:05:15,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:15" (2/3) ... [2020-09-24 17:05:15,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288e5b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:05:15, skipping insertion in model container [2020-09-24 17:05:15,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:05:15" (3/3) ... [2020-09-24 17:05:15,651 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o200.c [2020-09-24 17:05:15,683 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:05:15,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:05:15,725 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:05:15,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:05:15,757 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:05:15,760 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:05:15,760 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:05:15,760 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:05:15,760 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:05:15,761 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:05:15,761 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:05:15,784 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-24 17:05:15,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 17:05:15,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:15,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:15,793 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:15,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:15,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-24 17:05:15,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:15,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551207682] [2020-09-24 17:05:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,004 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:05:16,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 17:05:16,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:05:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:05:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:16,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:16,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,095 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:16,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:05:16,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:16,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:16,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,127 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:16,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 17:05:16,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:16,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:16,166 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 17:05:16,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551207682] [2020-09-24 17:05:16,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:05:16,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:05:16,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670192062] [2020-09-24 17:05:16,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:05:16,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:16,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:05:16,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:05:16,197 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-24 17:05:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:16,280 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 17:05:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:05:16,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 17:05:16,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:16,295 INFO L225 Difference]: With dead ends: 37 [2020-09-24 17:05:16,296 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 17:05:16,300 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 17:05:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 17:05:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-24 17:05:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 17:05:16,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-24 17:05:16,348 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-24 17:05:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:16,348 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-24 17:05:16,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:05:16,349 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-24 17:05:16,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 17:05:16,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:16,351 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 17:05:16,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:05:16,352 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:16,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:16,352 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-24 17:05:16,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:16,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836612632] [2020-09-24 17:05:16,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,542 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:05:16,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-24 17:05:16,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:05:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 17:05:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:05:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:16,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,654 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:16,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:05:16,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:16,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:16,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:16,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 17:05:16,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:16,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:16,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:16,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,831 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:16,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 17:05:16,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:16,854 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 17:05:16,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836612632] [2020-09-24 17:05:16,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:16,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 17:05:16,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543082905] [2020-09-24 17:05:16,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:05:16,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:16,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:05:16,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:05:16,859 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-24 17:05:16,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:16,925 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-24 17:05:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:05:16,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-24 17:05:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:16,928 INFO L225 Difference]: With dead ends: 31 [2020-09-24 17:05:16,928 INFO L226 Difference]: Without dead ends: 26 [2020-09-24 17:05:16,929 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 17:05:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-24 17:05:16,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-24 17:05:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 17:05:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-24 17:05:16,937 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-24 17:05:16,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:16,937 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-24 17:05:16,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:05:16,938 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-24 17:05:16,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 17:05:16,939 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:16,939 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 17:05:16,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:05:16,940 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:16,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-24 17:05:16,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:16,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372887804] [2020-09-24 17:05:16,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:17,213 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:17,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 17:05:17,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:17,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-24 17:05:17,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:05:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 17:05:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:05:17,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:17,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:17,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:17,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:17,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:05:17,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:17,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:17,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:17,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:17,453 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:17,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:17,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:17,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-24 17:05:17,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:17,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:17,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:17,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:17,538 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:17,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:17,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 17:05:17,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:17,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:17,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:17,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:17,595 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:17,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:17,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:17,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:05:17,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:17,622 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 17:05:17,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372887804] [2020-09-24 17:05:17,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:17,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:05:17,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364423069] [2020-09-24 17:05:17,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:05:17,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:17,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:05:17,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:05:17,625 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-24 17:05:17,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:17,722 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-24 17:05:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:05:17,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-24 17:05:17,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:17,724 INFO L225 Difference]: With dead ends: 35 [2020-09-24 17:05:17,724 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 17:05:17,725 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 17:05:17,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 17:05:17,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 17:05:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 17:05:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 17:05:17,732 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-24 17:05:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:17,733 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 17:05:17,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:05:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 17:05:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 17:05:17,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:17,735 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 17:05:17,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:05:17,735 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:17,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:17,736 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-24 17:05:17,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:17,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156840467] [2020-09-24 17:05:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:17,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:17,990 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:17,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 17:05:17,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-24 17:05:17,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:05:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 17:05:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:17,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 17:05:18,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:18,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:18,051 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:18,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:18,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:05:18,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:18,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:18,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:18,222 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:18,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:18,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-24 17:05:18,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:18,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:18,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:18,349 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:18,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:18,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:18,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 17:05:18,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:18,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:18,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:18,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:18,450 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:18,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:18,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:18,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 17:05:18,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:18,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:18,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:18,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:18,508 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:18,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:18,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:18,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:05:18,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:18,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:18,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:18,533 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 17:05:18,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156840467] [2020-09-24 17:05:18,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:18,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:05:18,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567895508] [2020-09-24 17:05:18,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:05:18,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:18,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:05:18,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:05:18,536 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-24 17:05:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:18,699 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 17:05:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 17:05:18,699 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-24 17:05:18,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:18,701 INFO L225 Difference]: With dead ends: 39 [2020-09-24 17:05:18,701 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 17:05:18,702 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 17:05:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 17:05:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-24 17:05:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 17:05:18,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 17:05:18,709 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-24 17:05:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:18,710 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 17:05:18,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:05:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 17:05:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 17:05:18,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:18,713 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 17:05:18,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:05:18,713 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:18,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-24 17:05:18,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:18,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367333537] [2020-09-24 17:05:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:18,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:19,054 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:19,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-24 17:05:19,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:05:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 17:05:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 17:05:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:19,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:19,104 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:19,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:19,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:19,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:19,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:19,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:19,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:19,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:19,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:19,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:19,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:19,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:19,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-24 17:05:19,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:19,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:19,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:19,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:19,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:19,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:19,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:19,508 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:19,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:19,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:19,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-24 17:05:19,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:19,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:19,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:19,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:19,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:19,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:19,634 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:19,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:19,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:19,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 17:05:19,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:19,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:19,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:19,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:19,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:19,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:19,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:19,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 17:05:19,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:19,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:19,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:19,785 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:19,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:19,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:19,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 17:05:19,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:19,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:19,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:19,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:19,819 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 17:05:19,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367333537] [2020-09-24 17:05:19,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:19,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 17:05:19,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630777269] [2020-09-24 17:05:19,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 17:05:19,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:19,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 17:05:19,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:05:19,822 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-24 17:05:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:20,062 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-24 17:05:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:05:20,063 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-24 17:05:20,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:20,064 INFO L225 Difference]: With dead ends: 43 [2020-09-24 17:05:20,064 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 17:05:20,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:05:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 17:05:20,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 17:05:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 17:05:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 17:05:20,084 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-24 17:05:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:20,084 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 17:05:20,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 17:05:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 17:05:20,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 17:05:20,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:20,089 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 17:05:20,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:05:20,094 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:20,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:20,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-24 17:05:20,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:20,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436500951] [2020-09-24 17:05:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:20,510 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:20,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 17:05:20,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:20,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-09-24 17:05:20,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:20,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:05:20,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 17:05:20,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:05:20,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:20,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:20,561 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:20,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:20,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:20,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:20,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:20,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:20,894 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:20,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:20,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:20,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-09-24 17:05:20,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:20,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:20,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:20,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,148 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:21,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-24 17:05:21,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:21,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:21,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,331 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:21,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 17:05:21,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:21,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:21,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:21,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,460 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:21,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 17:05:21,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:21,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:21,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,569 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:21,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 17:05:21,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:21,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:21,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:21,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,633 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:21,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:05:21,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:21,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:21,670 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 17:05:21,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436500951] [2020-09-24 17:05:21,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:21,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 17:05:21,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103759681] [2020-09-24 17:05:21,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 17:05:21,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:21,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 17:05:21,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:05:21,673 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-24 17:05:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:21,886 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-24 17:05:21,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 17:05:21,886 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-24 17:05:21,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:21,888 INFO L225 Difference]: With dead ends: 47 [2020-09-24 17:05:21,888 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 17:05:21,889 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 17:05:21,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 17:05:21,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 17:05:21,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 17:05:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 17:05:21,896 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-24 17:05:21,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:21,896 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 17:05:21,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 17:05:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 17:05:21,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 17:05:21,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:21,898 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 17:05:21,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:05:21,898 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:21,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:21,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-24 17:05:21,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:21,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444853164] [2020-09-24 17:05:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,413 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 17:05:22,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:22,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-09-24 17:05:22,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 17:05:22,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 17:05:22,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 17:05:22,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:22,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:22,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,459 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:22,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:22,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:22,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:22,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:22,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:22,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:22,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:22,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:22,903 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:22,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:22,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-24 17:05:22,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:22,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:23,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-24 17:05:23,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:23,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:23,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,459 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:23,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 17:05:23,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:23,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:23,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,680 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:23,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-24 17:05:23,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:23,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:23,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,805 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:23,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 17:05:23,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:23,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:23,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,894 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:23,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 17:05:23,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:23,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:23,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,965 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:23,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:05:23,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:23,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:24,008 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 17:05:24,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444853164] [2020-09-24 17:05:24,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:24,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 17:05:24,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544000435] [2020-09-24 17:05:24,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 17:05:24,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:24,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 17:05:24,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 17:05:24,012 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-24 17:05:24,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:24,287 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 17:05:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 17:05:24,288 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 17:05:24,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:24,289 INFO L225 Difference]: With dead ends: 51 [2020-09-24 17:05:24,290 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 17:05:24,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-24 17:05:24,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 17:05:24,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-24 17:05:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 17:05:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-24 17:05:24,297 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-24 17:05:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:24,297 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-24 17:05:24,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 17:05:24,298 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-24 17:05:24,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 17:05:24,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:24,299 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 17:05:24,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:05:24,299 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:24,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:24,300 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-24 17:05:24,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:24,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240365357] [2020-09-24 17:05:24,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:24,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:24,923 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:24,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 17:05:24,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-09-24 17:05:24,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 17:05:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 17:05:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 17:05:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:24,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:24,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:24,972 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:24,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:24,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:24,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:24,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:24,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:24,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:24,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:24,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:25,517 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:25,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:05:25,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-09-24 17:05:25,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:05:25,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:25,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:25,990 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:25,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:25,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:25,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-09-24 17:05:25,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:25,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:26,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:26,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:26,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:26,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:26,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:26,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-24 17:05:26,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:26,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:26,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:26,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:26,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:26,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-24 17:05:26,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:26,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:26,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:26,717 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:26,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:26,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:26,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 17:05:26,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:26,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:26,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:26,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:26,837 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:26,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:26,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:26,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 17:05:26,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:26,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:26,931 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:26,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:26,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:26,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 17:05:26,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:26,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:26,998 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:26,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:26,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:05:27,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:27,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:27,048 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 17:05:27,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240365357] [2020-09-24 17:05:27,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:27,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 17:05:27,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993094217] [2020-09-24 17:05:27,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 17:05:27,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:27,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 17:05:27,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:05:27,051 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-24 17:05:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:27,392 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-24 17:05:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 17:05:27,393 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-24 17:05:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:27,394 INFO L225 Difference]: With dead ends: 55 [2020-09-24 17:05:27,394 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 17:05:27,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-24 17:05:27,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 17:05:27,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 17:05:27,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 17:05:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 17:05:27,408 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-24 17:05:27,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:27,410 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 17:05:27,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 17:05:27,410 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 17:05:27,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 17:05:27,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:27,411 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 17:05:27,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:05:27,412 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:27,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:27,412 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-24 17:05:27,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:27,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241921908] [2020-09-24 17:05:27,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:27,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:28,143 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:28,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 17:05:28,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:28,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-09-24 17:05:28,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 17:05:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 17:05:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:28,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:28,195 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:28,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:28,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:28,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:28,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:28,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:28,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:28,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:05:28,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:28,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-09-24 17:05:28,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:28,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:28,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:28,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,405 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:29,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:05:29,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:29,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-24 17:05:29,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:05:29,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:29,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,789 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:29,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:29,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-24 17:05:29,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:29,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,096 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:30,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-24 17:05:30,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:30,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:30,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:30,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:30,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-24 17:05:30,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:30,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:30,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:30,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,486 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:30,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 17:05:30,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:30,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:30,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:30,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,620 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:30,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 17:05:30,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:30,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:30,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,701 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:30,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:05:30,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:30,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,783 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:30,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:05:30,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:30,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:30,877 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 17:05:30,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241921908] [2020-09-24 17:05:30,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:30,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 17:05:30,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151974951] [2020-09-24 17:05:30,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 17:05:30,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:30,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 17:05:30,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:05:30,880 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 17:05:31,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:31,306 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 17:05:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 17:05:31,306 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 17:05:31,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:31,308 INFO L225 Difference]: With dead ends: 59 [2020-09-24 17:05:31,309 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 17:05:31,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-24 17:05:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 17:05:31,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 17:05:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 17:05:31,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-24 17:05:31,322 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-24 17:05:31,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:31,323 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-24 17:05:31,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 17:05:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-24 17:05:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 17:05:31,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:31,329 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 17:05:31,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:05:31,329 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:31,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-24 17:05:31,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:31,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719178318] [2020-09-24 17:05:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:32,170 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:32,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 17:05:32,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:32,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-09-24 17:05:32,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:05:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 17:05:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:32,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:32,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:32,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:32,225 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:32,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:32,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:32,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:32,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:32,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:32,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:32,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:32,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:32,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,024 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:05:33,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-09-24 17:05:33,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 17:05:33,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:33,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,678 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:05:33,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-09-24 17:05:33,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:33,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:34,243 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:34,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:05:34,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:34,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-09-24 17:05:34,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:34,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:34,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:05:34,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:34,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:34,655 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:34,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:34,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:34,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-09-24 17:05:34,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:34,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:34,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:34,937 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:34,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:34,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-24 17:05:34,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:34,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:34,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,170 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:35,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-24 17:05:35,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:35,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:35,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,352 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:35,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 17:05:35,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:35,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:35,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:35,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,496 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:35,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 17:05:35,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:35,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:35,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:35,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,583 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:35,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 17:05:35,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:35,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:35,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,678 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:35,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 17:05:35,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:35,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:35,759 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 17:05:35,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719178318] [2020-09-24 17:05:35,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:35,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 17:05:35,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042510642] [2020-09-24 17:05:35,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 17:05:35,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:35,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 17:05:35,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-24 17:05:35,762 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-24 17:05:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:36,338 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-24 17:05:36,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 17:05:36,339 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-24 17:05:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:36,340 INFO L225 Difference]: With dead ends: 63 [2020-09-24 17:05:36,341 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 17:05:36,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 17:05:36,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 17:05:36,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 17:05:36,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 17:05:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 17:05:36,348 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-24 17:05:36,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:36,348 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 17:05:36,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 17:05:36,348 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 17:05:36,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 17:05:36,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:36,350 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 17:05:36,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:05:36,350 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:36,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:36,350 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-24 17:05:36,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:36,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330471347] [2020-09-24 17:05:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:37,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:37,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 17:05:37,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:37,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-09-24 17:05:37,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:37,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 17:05:37,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 17:05:37,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 17:05:37,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:37,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:37,344 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:37,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:37,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:37,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:37,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:38,132 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:38,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:38,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:38,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-09-24 17:05:38,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:38,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:38,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:38,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 17:05:38,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:38,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:38,835 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:38,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:05:38,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:38,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-09-24 17:05:38,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 17:05:38,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:38,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:38,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:39,376 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:39,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:05:39,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:39,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-09-24 17:05:39,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:39,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:39,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:39,783 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:39,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:05:39,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:39,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-09-24 17:05:39,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:05:39,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:39,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:39,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,109 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:40,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-24 17:05:40,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:40,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:40,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:40,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:40,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,364 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:40,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 17:05:40,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,564 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:40,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 17:05:40,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:40,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:40,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,720 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:40,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 17:05:40,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:40,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:40,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,843 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:40,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 17:05:40,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:40,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:40,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:40,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:40,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,943 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:40,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:05:40,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:40,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:41,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:41,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:41,025 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:41,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:41,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:41,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:05:41,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:41,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-24 17:05:41,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330471347] [2020-09-24 17:05:41,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:41,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 17:05:41,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091683399] [2020-09-24 17:05:41,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 17:05:41,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:41,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 17:05:41,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-24 17:05:41,099 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-24 17:05:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:41,789 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-24 17:05:41,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 17:05:41,789 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-24 17:05:41,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:41,791 INFO L225 Difference]: With dead ends: 67 [2020-09-24 17:05:41,791 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 17:05:41,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 17:05:41,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 17:05:41,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 17:05:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 17:05:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-24 17:05:41,801 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-24 17:05:41,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:41,801 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-24 17:05:41,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 17:05:41,801 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-24 17:05:41,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-24 17:05:41,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:41,803 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:41,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 17:05:41,803 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:41,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:41,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-24 17:05:41,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:41,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599960373] [2020-09-24 17:05:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:41,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:42,880 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:42,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-24 17:05:42,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:42,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-09-24 17:05:42,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:42,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 17:05:42,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 17:05:42,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 17:05:42,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:42,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:42,927 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:42,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:42,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:42,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:42,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:42,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:42,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:42,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:42,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:43,814 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:43,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 17:05:43,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:43,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-09-24 17:05:43,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:43,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:05:43,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:43,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 17:05:43,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:43,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:43,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:44,702 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:44,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:44,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:44,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-09-24 17:05:44,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 17:05:44,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:44,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:45,403 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:45,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:05:45,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-09-24 17:05:45,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 17:05:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:45,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:45,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:45,924 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:45,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:05:45,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:45,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-24 17:05:45,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:45,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:45,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:46,362 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:46,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:05:46,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-24 17:05:46,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:05:46,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:46,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:46,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:46,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:46,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:46,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-24 17:05:46,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:46,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:46,970 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:46,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:46,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:46,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 17:05:46,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:46,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:46,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:46,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:46,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:47,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:47,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:47,175 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:47,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:47,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:47,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-24 17:05:47,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:47,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:47,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:47,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:47,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:47,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:47,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:47,336 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:47,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:47,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 17:05:47,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:47,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:47,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:47,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:47,470 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:47,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:47,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:47,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 17:05:47,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:47,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:47,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:47,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:47,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:47,567 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:47,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:47,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:47,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 17:05:47,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:47,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:47,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:47,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:47,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:47,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:47,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:47,661 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:47,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:47,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:47,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:05:47,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:47,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-24 17:05:47,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599960373] [2020-09-24 17:05:47,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:47,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 17:05:47,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567417147] [2020-09-24 17:05:47,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 17:05:47,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:47,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 17:05:47,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-24 17:05:47,741 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-24 17:05:48,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:48,576 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-24 17:05:48,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-24 17:05:48,577 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-24 17:05:48,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:48,579 INFO L225 Difference]: With dead ends: 71 [2020-09-24 17:05:48,579 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 17:05:48,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 17:05:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 17:05:48,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 17:05:48,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 17:05:48,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-24 17:05:48,586 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-24 17:05:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:48,587 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-24 17:05:48,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 17:05:48,587 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-24 17:05:48,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-24 17:05:48,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:48,588 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:48,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 17:05:48,588 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:48,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:48,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-24 17:05:48,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:48,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380098879] [2020-09-24 17:05:48,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:48,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:49,922 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:49,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 17:05:49,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:49,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1317 [2020-09-24 17:05:49,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 17:05:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 17:05:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 17:05:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:49,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:49,980 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:49,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:49,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:49,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:49,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:50,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:51,088 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:51,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 17:05:51,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-09-24 17:05:51,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:05:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 17:05:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:51,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:52,338 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:52,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 17:05:52,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1182 [2020-09-24 17:05:52,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:05:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 17:05:52,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:52,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:52,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:53,156 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:53,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:53,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:53,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-09-24 17:05:53,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 17:05:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:53,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:53,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:53,857 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:53,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:05:53,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:53,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-24 17:05:53,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:53,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:53,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:53,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 17:05:53,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:53,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:53,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:54,408 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:54,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:05:54,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:54,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-24 17:05:54,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:54,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:54,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:54,910 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:54,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:05:54,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:54,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-09-24 17:05:54,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:05:54,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:54,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:54,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,264 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:55,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-24 17:05:55,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:55,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:55,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:55,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:55,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,536 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:55,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-24 17:05:55,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:55,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:55,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:55,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:55,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-24 17:05:55,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:55,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,925 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:55,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 17:05:55,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:56,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:56,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:56,059 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:56,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:56,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:56,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 17:05:56,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:56,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:56,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:56,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:56,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:56,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:56,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:56,177 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:56,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:56,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:56,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:05:56,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:56,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:56,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:56,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:56,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:56,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:56,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:56,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:56,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:05:56,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:56,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-24 17:05:56,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380098879] [2020-09-24 17:05:56,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:56,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 17:05:56,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435761472] [2020-09-24 17:05:56,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 17:05:56,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:56,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 17:05:56,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-24 17:05:56,377 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-24 17:05:57,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:57,312 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-24 17:05:57,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-24 17:05:57,313 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-24 17:05:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:57,314 INFO L225 Difference]: With dead ends: 75 [2020-09-24 17:05:57,314 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 17:05:57,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 17:05:57,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 17:05:57,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-24 17:05:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 17:05:57,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-24 17:05:57,323 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-24 17:05:57,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:57,323 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-24 17:05:57,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 17:05:57,324 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-24 17:05:57,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 17:05:57,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:57,325 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:57,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 17:05:57,325 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:57,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:57,326 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-24 17:05:57,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:57,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156882854] [2020-09-24 17:05:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:57,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:58,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:58,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 17:05:58,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:58,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1481 [2020-09-24 17:05:58,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:58,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 17:05:58,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 17:05:58,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:58,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:58,876 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:58,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:58,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:58,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:58,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:00,244 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:00,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 17:06:00,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:00,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-09-24 17:06:00,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 17:06:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 17:06:00,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:00,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:00,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:01,414 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:01,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 17:06:01,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:01,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1115 [2020-09-24 17:06:01,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:01,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:06:01,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:01,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 17:06:01,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:01,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:02,381 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:02,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 17:06:02,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:02,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 913 [2020-09-24 17:06:02,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:06:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 17:06:02,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:02,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:03,187 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:03,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:06:03,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:03,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-09-24 17:06:03,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:03,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:06:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 17:06:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:03,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:03,856 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:03,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:06:03,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:03,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-09-24 17:06:03,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:06:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 17:06:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:03,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:04,397 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:04,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:06:04,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-09-24 17:06:04,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:04,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:06:04,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:04,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:06:04,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:04,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:04,851 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:04,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:06:04,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:04,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-09-24 17:06:04,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:06:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:06:04,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:04,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:05,194 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:05,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:06:05,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:05,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-24 17:06:05,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:06:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:05,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:06:05,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:05,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:05,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:05,475 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:05,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:06:05,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:05,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-24 17:06:05,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:06:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:06:05,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:05,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:05,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:05,688 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:05,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:06:05,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 17:06:05,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:06:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:06:05,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:05,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:05,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:05,849 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:05,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:06:05,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:05,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 17:06:05,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:05,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:06:05,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:05,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:06:05,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:05,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:05,984 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:05,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:06:05,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:05,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 17:06:05,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:06:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:06:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:06,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:06,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:06,107 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:06,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:06:06,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 17:06:06,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:06:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:06:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:06,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:06,204 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:06,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:06,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:06:06,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:06:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:06:06,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-24 17:06:06,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156882854] [2020-09-24 17:06:06,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:06:06,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-24 17:06:06,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621670655] [2020-09-24 17:06:06,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-24 17:06:06,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:06,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-24 17:06:06,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-24 17:06:06,307 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-24 17:06:07,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:07,406 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-24 17:06:07,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-24 17:06:07,406 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-24 17:06:07,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:07,407 INFO L225 Difference]: With dead ends: 79 [2020-09-24 17:06:07,407 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 17:06:07,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 17:06:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 17:06:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 17:06:07,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 17:06:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-24 17:06:07,417 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-24 17:06:07,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:07,420 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-24 17:06:07,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-24 17:06:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-24 17:06:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 17:06:07,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:07,421 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:07,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 17:06:07,426 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:07,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:07,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-24 17:06:07,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:07,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130710260] [2020-09-24 17:06:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:07,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:09,249 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:09,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 17:06:09,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:09,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1802 [2020-09-24 17:06:09,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 17:06:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-24 17:06:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 17:06:09,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:09,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:09,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:09,294 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:09,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:09,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:09,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:09,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:09,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:09,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:09,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:09,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:09,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:06:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:10,897 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:10,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-24 17:06:10,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:10,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1585 [2020-09-24 17:06:10,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:10,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 17:06:10,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:10,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-24 17:06:10,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:10,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking...