/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 --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 interpolation-heuristic=FIRST --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/fibo_2calls_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:20:55,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:20:55,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:20:55,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:20:55,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:20:55,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:20:55,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:20:55,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:20:55,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:20:55,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:20:55,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:20:55,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:20:55,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:20:55,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:20:55,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:20:55,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:20:55,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:20:55,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:20:55,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:20:55,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:20:55,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:20:55,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:20:55,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:20:55,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:20:55,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:20:55,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:20:55,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:20:55,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:20:55,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:20:55,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:20:55,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:20:55,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:20:55,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:20:55,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:20:55,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:20:55,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:20:55,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:20:55,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:20:55,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:20:55,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:20:55,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:20:55,456 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 [2020-09-21 11:20:55,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:20:55,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:20:55,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:20:55,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:20:55,503 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:20:55,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:20:55,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:20:55,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:20:55,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:20:55,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:20:55,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:20:55,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:20:55,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:20:55,507 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:20:55,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:20:55,507 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:20:55,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:20:55,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:20:55,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:20:55,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:20:55,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:20:55,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:20:55,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:20:55,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:20:55,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:20:55,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:20:55,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:20:55,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:20:55,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:20:55,510 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:20:56,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:20:56,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:20:56,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:20:56,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:20:56,045 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:20:56,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-21 11:20:56,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7422980ec/bd04bc12df67447c9e2f49d2766a82e8/FLAGdbf43ec05 [2020-09-21 11:20:56,650 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:20:56,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-21 11:20:56,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7422980ec/bd04bc12df67447c9e2f49d2766a82e8/FLAGdbf43ec05 [2020-09-21 11:20:56,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7422980ec/bd04bc12df67447c9e2f49d2766a82e8 [2020-09-21 11:20:57,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:20:57,016 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:20:57,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:20:57,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:20:57,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:20:57,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:20:56" (1/1) ... [2020-09-21 11:20:57,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:57, skipping insertion in model container [2020-09-21 11:20:57,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:20:56" (1/1) ... [2020-09-21 11:20:57,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:20:57,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:20:57,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:20:57,266 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:20:57,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:20:57,301 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:20:57,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:57 WrapperNode [2020-09-21 11:20:57,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:20:57,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:20:57,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:20:57,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:20:57,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:57" (1/1) ... [2020-09-21 11:20:57,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:57" (1/1) ... [2020-09-21 11:20:57,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:57" (1/1) ... [2020-09-21 11:20:57,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:57" (1/1) ... [2020-09-21 11:20:57,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:57" (1/1) ... [2020-09-21 11:20:57,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:57" (1/1) ... [2020-09-21 11:20:57,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:57" (1/1) ... [2020-09-21 11:20:57,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:20:57,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:20:57,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:20:57,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:20:57,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:57" (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 [2020-09-21 11:20:57,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:20:57,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:20:57,494 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-21 11:20:57,494 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-21 11:20:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:20:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:20:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:20:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-21 11:20:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-21 11:20:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:20:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:20:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:20:57,738 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:20:57,738 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:20:57,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:20:57 BoogieIcfgContainer [2020-09-21 11:20:57,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:20:57,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:20:57,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:20:57,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:20:57,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:20:56" (1/3) ... [2020-09-21 11:20:57,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfca7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:20:57, skipping insertion in model container [2020-09-21 11:20:57,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:57" (2/3) ... [2020-09-21 11:20:57,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfca7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:20:57, skipping insertion in model container [2020-09-21 11:20:57,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:20:57" (3/3) ... [2020-09-21 11:20:57,776 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2020-09-21 11:20:57,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:20:57,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:20:57,838 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:20:57,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:20:57,868 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:20:57,868 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:20:57,868 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:20:57,868 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:20:57,868 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:20:57,869 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:20:57,869 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:20:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-21 11:20:57,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:20:57,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:57,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:57,899 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:57,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:57,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-09-21 11:20:57,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:57,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620222805] [2020-09-21 11:20:57,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:58,054 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:58,055 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:58,055 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:58,055 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:58,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:20:58,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 11:20:58,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:20:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:58,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:58,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:58,116 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:58,116 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:58,116 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:58,117 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:58,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:58,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:58,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:58,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:58,139 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:58,139 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:58,139 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:58,140 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:58,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:58,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:58,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:20:58,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:20:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:20:58,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620222805] [2020-09-21 11:20:58,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:20:58,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:20:58,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451238722] [2020-09-21 11:20:58,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:20:58,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:58,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:20:58,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:20:58,207 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-21 11:20:58,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:58,343 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-09-21 11:20:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:20:58,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 11:20:58,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:58,359 INFO L225 Difference]: With dead ends: 44 [2020-09-21 11:20:58,360 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 11:20:58,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:20:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 11:20:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-21 11:20:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 11:20:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-09-21 11:20:58,416 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-09-21 11:20:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:58,417 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-09-21 11:20:58,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:20:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-09-21 11:20:58,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:20:58,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:58,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:58,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:20:58,420 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:58,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:58,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-09-21 11:20:58,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:58,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021096952] [2020-09-21 11:20:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:58,440 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:58,441 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:58,441 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:58,441 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:58,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:20:58,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:58,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:20:58,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:58,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:58,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:20:58,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:58,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:58,464 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:58,464 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:58,465 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:58,465 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:58,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:58,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:58,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:20:58,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:58,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:58,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:58,483 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:58,484 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:58,484 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:58,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:58,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:58,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:58,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:58,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:20:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:58,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:20:58,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021096952] [2020-09-21 11:20:58,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:20:58,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:20:58,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891983795] [2020-09-21 11:20:58,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:20:58,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:58,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:20:58,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:20:58,534 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-09-21 11:20:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:58,616 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-09-21 11:20:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:20:58,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 11:20:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:58,619 INFO L225 Difference]: With dead ends: 36 [2020-09-21 11:20:58,619 INFO L226 Difference]: Without dead ends: 32 [2020-09-21 11:20:58,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:20:58,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-21 11:20:58,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-21 11:20:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 11:20:58,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-09-21 11:20:58,630 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-09-21 11:20:58,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:58,630 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-09-21 11:20:58,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:20:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-09-21 11:20:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:20:58,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:58,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:58,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:20:58,633 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:58,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:58,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-09-21 11:20:58,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:58,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911252232] [2020-09-21 11:20:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:58,666 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:58,666 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:58,666 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:58,667 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:58,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 11:20:58,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:58,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:20:58,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:20:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:20:58,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:58,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:58,718 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:58,719 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:58,719 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:58,719 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:58,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:58,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:58,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:20:58,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:58,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:20:58,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:58,774 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:58,774 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:58,775 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:58,775 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:58,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:20:58,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:58,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:20:58,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:58,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:20:58,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:20:58,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:58,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:58,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:58,851 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:58,851 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:58,853 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:58,853 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:58,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:58,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:58,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:20:58,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:20:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:58,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:58,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:20:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:58,901 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:58,901 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:58,903 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:58,903 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:58,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:58,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:58,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:20:58,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:58,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:20:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:58,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:20:58,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911252232] [2020-09-21 11:20:58,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:58,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:20:58,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076423241] [2020-09-21 11:20:58,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:20:58,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:58,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:20:58,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:20:58,938 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-09-21 11:20:59,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:59,024 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-09-21 11:20:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:20:59,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-09-21 11:20:59,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:59,026 INFO L225 Difference]: With dead ends: 58 [2020-09-21 11:20:59,026 INFO L226 Difference]: Without dead ends: 34 [2020-09-21 11:20:59,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:20:59,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-21 11:20:59,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-21 11:20:59,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 11:20:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-09-21 11:20:59,043 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-09-21 11:20:59,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:59,043 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-09-21 11:20:59,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:20:59,044 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-09-21 11:20:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:20:59,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:59,046 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, 1, 1, 1, 1] [2020-09-21 11:20:59,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:20:59,046 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:59,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:59,047 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-09-21 11:20:59,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:59,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199877671] [2020-09-21 11:20:59,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,071 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,072 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 11:20:59,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:20:59,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:20:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:20:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,091 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,092 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,092 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,092 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:59,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:59,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:59,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:59,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,114 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,114 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,115 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,115 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:20:59,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:20:59,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:20:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:20:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,181 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,183 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,183 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,183 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:59,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:20:59,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:20:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:59,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:59,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:20:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,224 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,224 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,224 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,224 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:59,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:20:59,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:20:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:59,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:20:59,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199877671] [2020-09-21 11:20:59,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:59,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:20:59,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301357448] [2020-09-21 11:20:59,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:20:59,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:59,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:20:59,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:20:59,235 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2020-09-21 11:20:59,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:59,384 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2020-09-21 11:20:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:20:59,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-21 11:20:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:59,387 INFO L225 Difference]: With dead ends: 50 [2020-09-21 11:20:59,388 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 11:20:59,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:20:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 11:20:59,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-21 11:20:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 11:20:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2020-09-21 11:20:59,400 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2020-09-21 11:20:59,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:59,401 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2020-09-21 11:20:59,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:20:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2020-09-21 11:20:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-21 11:20:59,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:59,403 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:59,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:20:59,404 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:59,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:59,404 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-09-21 11:20:59,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:59,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585984375] [2020-09-21 11:20:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,423 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,423 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,423 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,424 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:20:59,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:20:59,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:20:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:20:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:59,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,439 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,439 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,439 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,440 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:59,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:59,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:59,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,459 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,460 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,460 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,460 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 11:20:59,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:59,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:20:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 11:20:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,486 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,486 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,487 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,487 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:20:59,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:20:59,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:20:59,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:20:59,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:59,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,516 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,517 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,517 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,517 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:59,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:20:59,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:20:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:20:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,537 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,537 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,537 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,538 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:59,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:59,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:20:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 11:20:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,545 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,545 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,545 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,545 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:59,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:59,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:20:59,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:59,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 11:20:59,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585984375] [2020-09-21 11:20:59,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:59,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 11:20:59,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720913966] [2020-09-21 11:20:59,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:20:59,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:59,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:20:59,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:20:59,555 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand 6 states. [2020-09-21 11:20:59,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:59,628 INFO L93 Difference]: Finished difference Result 86 states and 132 transitions. [2020-09-21 11:20:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:20:59,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-09-21 11:20:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:59,630 INFO L225 Difference]: With dead ends: 86 [2020-09-21 11:20:59,631 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 11:20:59,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:20:59,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 11:20:59,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-21 11:20:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-21 11:20:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-09-21 11:20:59,645 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 39 [2020-09-21 11:20:59,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:59,645 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-09-21 11:20:59,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:20:59,646 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-09-21 11:20:59,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 11:20:59,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:59,648 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:59,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:20:59,649 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:59,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:59,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-09-21 11:20:59,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:59,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224929571] [2020-09-21 11:20:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,674 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,674 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,675 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,675 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 11:20:59,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:20:59,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:20:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:20:59,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 11:20:59,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,698 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,698 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,698 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,699 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:59,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:59,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:59,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:59,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:20:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,727 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,728 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,728 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,729 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 11:20:59,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:20:59,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:20:59,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:20:59,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 11:20:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:59,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,779 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,779 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,780 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,780 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:20:59,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:20:59,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:20:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:20:59,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:59,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,840 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,840 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,841 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,841 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:59,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:20:59,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:20:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:20:59,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:59,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:20:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,850 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,850 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,851 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,851 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:59,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:59,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:20:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:59,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:20:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:59,875 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:59,875 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:59,876 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:59,876 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:59,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:20:59,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:59,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:20:59,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:20:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:20:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:20:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-21 11:20:59,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224929571] [2020-09-21 11:20:59,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:59,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:20:59,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658406168] [2020-09-21 11:20:59,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:20:59,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:59,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:20:59,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:20:59,923 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 9 states. [2020-09-21 11:21:00,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:00,037 INFO L93 Difference]: Finished difference Result 93 states and 141 transitions. [2020-09-21 11:21:00,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:21:00,038 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-09-21 11:21:00,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:00,040 INFO L225 Difference]: With dead ends: 93 [2020-09-21 11:21:00,040 INFO L226 Difference]: Without dead ends: 51 [2020-09-21 11:21:00,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:21:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-21 11:21:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2020-09-21 11:21:00,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-21 11:21:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2020-09-21 11:21:00,052 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 40 [2020-09-21 11:21:00,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:00,052 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2020-09-21 11:21:00,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:21:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2020-09-21 11:21:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 11:21:00,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:00,054 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:00,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:21:00,055 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:00,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:00,055 INFO L82 PathProgramCache]: Analyzing trace with hash 208191613, now seen corresponding path program 1 times [2020-09-21 11:21:00,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:00,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890368758] [2020-09-21 11:21:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,077 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,077 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,077 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,077 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 11:21:00,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:00,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 11:21:00,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,097 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,097 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,097 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,097 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:00,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:00,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:00,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:00,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,122 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,122 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,122 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,123 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:00,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:21:00,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 11:21:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,166 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,167 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,167 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,167 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:00,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:21:00,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:00,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:00,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:00,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:00,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,203 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,204 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,204 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,204 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:00,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:00,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,223 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,224 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,224 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,224 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:00,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:00,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:00,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:00,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,232 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,232 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,232 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,232 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:00,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:00,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:00,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 11:21:00,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890368758] [2020-09-21 11:21:00,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:00,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:21:00,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6789462] [2020-09-21 11:21:00,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:21:00,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:00,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:21:00,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:21:00,244 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand 8 states. [2020-09-21 11:21:00,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:00,396 INFO L93 Difference]: Finished difference Result 66 states and 102 transitions. [2020-09-21 11:21:00,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:21:00,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-21 11:21:00,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:00,400 INFO L225 Difference]: With dead ends: 66 [2020-09-21 11:21:00,400 INFO L226 Difference]: Without dead ends: 62 [2020-09-21 11:21:00,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:21:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-21 11:21:00,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-09-21 11:21:00,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-21 11:21:00,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 90 transitions. [2020-09-21 11:21:00,415 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 90 transitions. Word has length 41 [2020-09-21 11:21:00,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:00,415 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 90 transitions. [2020-09-21 11:21:00,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:21:00,415 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 90 transitions. [2020-09-21 11:21:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-21 11:21:00,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:00,418 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:00,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:21:00,419 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:00,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:00,419 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-09-21 11:21:00,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:00,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776515680] [2020-09-21 11:21:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,445 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,445 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,445 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,445 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 11:21:00,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:21:00,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:21:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,464 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,464 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,464 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,464 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:00,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:00,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:00,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:00,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,489 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,490 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,490 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,490 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 11:21:00,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:00,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:21:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 11:21:00,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,519 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,519 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,519 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,520 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 11:21:00,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:00,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:00,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:00,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 11:21:00,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,546 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,546 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,546 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,547 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:00,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:21:00,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:00,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,599 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,599 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,599 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,599 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:00,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:00,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:00,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,607 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,607 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,607 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,607 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:00,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:00,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:00,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,617 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,617 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,617 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,629 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:00,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:21:00,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:00,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 11:21:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,658 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,658 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,658 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,658 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:00,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:00,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:21:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:00,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-21 11:21:00,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776515680] [2020-09-21 11:21:00,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:00,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:21:00,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329322190] [2020-09-21 11:21:00,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:21:00,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:00,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:21:00,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:21:00,669 INFO L87 Difference]: Start difference. First operand 59 states and 90 transitions. Second operand 9 states. [2020-09-21 11:21:00,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:00,839 INFO L93 Difference]: Finished difference Result 125 states and 221 transitions. [2020-09-21 11:21:00,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:21:00,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-09-21 11:21:00,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:00,842 INFO L225 Difference]: With dead ends: 125 [2020-09-21 11:21:00,842 INFO L226 Difference]: Without dead ends: 72 [2020-09-21 11:21:00,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:21:00,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-21 11:21:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-09-21 11:21:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-21 11:21:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 102 transitions. [2020-09-21 11:21:00,857 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 102 transitions. Word has length 54 [2020-09-21 11:21:00,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:00,857 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 102 transitions. [2020-09-21 11:21:00,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:21:00,858 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 102 transitions. [2020-09-21 11:21:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-21 11:21:00,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:00,859 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:00,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:21:00,860 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:00,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:00,860 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2020-09-21 11:21:00,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:00,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756623612] [2020-09-21 11:21:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,881 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,881 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,882 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,882 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 11:21:00,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:00,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-21 11:21:00,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,900 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:00,900 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,901 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,901 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:00,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:00,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:00,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:00,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:00,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:00,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,928 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:00,928 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,929 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,929 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 11:21:00,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:00,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:00,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:00,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-21 11:21:00,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:00,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:00,974 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:00,975 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:00,975 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:00,975 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:00,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:00,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:00,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:21:00,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:00,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:01,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,020 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:01,020 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,020 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,020 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:01,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:01,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:01,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:01,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:01,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:01,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,051 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:01,051 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,052 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,052 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:01,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:01,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:01,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:01,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,061 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:01,061 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,061 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,062 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:01,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:01,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:01,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:01,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,071 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:01,071 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:01,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:01,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:01,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:01,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,084 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:01,084 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,085 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:01,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:21:01,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-21 11:21:01,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756623612] [2020-09-21 11:21:01,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:01,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:21:01,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798830583] [2020-09-21 11:21:01,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:21:01,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:01,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:21:01,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:21:01,128 INFO L87 Difference]: Start difference. First operand 66 states and 102 transitions. Second operand 9 states. [2020-09-21 11:21:01,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:01,361 INFO L93 Difference]: Finished difference Result 132 states and 233 transitions. [2020-09-21 11:21:01,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:21:01,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-09-21 11:21:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:01,363 INFO L225 Difference]: With dead ends: 132 [2020-09-21 11:21:01,364 INFO L226 Difference]: Without dead ends: 75 [2020-09-21 11:21:01,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:21:01,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-21 11:21:01,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2020-09-21 11:21:01,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-21 11:21:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 103 transitions. [2020-09-21 11:21:01,387 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 103 transitions. Word has length 55 [2020-09-21 11:21:01,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:01,389 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 103 transitions. [2020-09-21 11:21:01,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:21:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 103 transitions. [2020-09-21 11:21:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-21 11:21:01,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:01,392 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:01,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:21:01,392 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:01,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1156896337, now seen corresponding path program 1 times [2020-09-21 11:21:01,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:01,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540860399] [2020-09-21 11:21:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,540 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:01,541 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,541 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,541 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-21 11:21:01,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-21 11:21:01,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-21 11:21:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-21 11:21:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-21 11:21:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,600 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:01,600 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,600 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,601 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:01,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:01,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,698 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:01,698 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,698 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,699 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:21:01,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-21 11:21:01,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 11:21:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 11:21:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:01,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,779 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:01,780 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,780 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,780 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:01,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:21:01,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:21:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-21 11:21:01,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:01,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,854 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:01,854 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,854 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,854 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:01,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:21:01,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 11:21:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:01,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,910 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:01,911 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,911 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,911 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:01,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:01,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:21:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:01,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:01,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,938 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:01,939 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,939 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,939 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:01,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:21:01,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:01,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:01,971 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:01,972 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:01,972 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:01,972 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:01,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:01,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:01,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:21:01,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:01,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:01,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,010 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,010 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,010 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,010 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:02,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:21:02,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:21:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:02,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,075 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,075 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,075 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,076 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:02,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:02,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:21:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:02,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,091 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,091 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,092 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,092 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:02,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:02,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:02,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-21 11:21:02,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540860399] [2020-09-21 11:21:02,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:02,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-21 11:21:02,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507164025] [2020-09-21 11:21:02,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-21 11:21:02,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:02,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-21 11:21:02,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-21 11:21:02,141 INFO L87 Difference]: Start difference. First operand 69 states and 103 transitions. Second operand 17 states. [2020-09-21 11:21:02,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:02,345 INFO L93 Difference]: Finished difference Result 120 states and 215 transitions. [2020-09-21 11:21:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 11:21:02,346 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 68 [2020-09-21 11:21:02,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:02,350 INFO L225 Difference]: With dead ends: 120 [2020-09-21 11:21:02,351 INFO L226 Difference]: Without dead ends: 116 [2020-09-21 11:21:02,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:21:02,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-21 11:21:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 84. [2020-09-21 11:21:02,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-21 11:21:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 136 transitions. [2020-09-21 11:21:02,389 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 136 transitions. Word has length 68 [2020-09-21 11:21:02,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:02,390 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 136 transitions. [2020-09-21 11:21:02,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-21 11:21:02,390 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 136 transitions. [2020-09-21 11:21:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-21 11:21:02,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:02,393 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:02,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:21:02,394 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1751947273, now seen corresponding path program 2 times [2020-09-21 11:21:02,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:02,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086587367] [2020-09-21 11:21:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,446 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,447 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,447 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,447 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 11:21:02,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:02,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 11:21:02,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:02,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,468 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,469 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,469 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,469 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:02,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:02,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:02,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,522 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,525 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,525 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,525 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 11:21:02,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:21:02,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 11:21:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 11:21:02,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:21:02,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,567 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,568 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,568 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,569 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:02,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:02,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:02,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:02,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:02,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,610 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,610 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,611 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:02,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:02,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:02,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:02,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,651 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:02,651 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,651 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,651 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:02,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:21:02,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:02,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:02,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,681 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,681 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,681 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:02,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:21:02,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:02,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:02,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,692 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,693 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,693 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,693 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:02,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:02,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:02,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:02,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,707 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,708 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,708 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,708 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:21:02,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:21:02,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:21:02,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:02,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,733 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,733 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,733 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,734 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:02,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:21:02,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:02,777 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:02,778 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:02,778 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:02,779 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:02,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:02,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:02,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:02,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 41 proven. 25 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-21 11:21:02,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086587367] [2020-09-21 11:21:02,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:02,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-21 11:21:02,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746643273] [2020-09-21 11:21:02,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 11:21:02,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:02,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 11:21:02,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:21:02,821 INFO L87 Difference]: Start difference. First operand 84 states and 136 transitions. Second operand 15 states. [2020-09-21 11:21:03,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:03,333 INFO L93 Difference]: Finished difference Result 192 states and 362 transitions. [2020-09-21 11:21:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 11:21:03,334 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-09-21 11:21:03,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:03,339 INFO L225 Difference]: With dead ends: 192 [2020-09-21 11:21:03,339 INFO L226 Difference]: Without dead ends: 117 [2020-09-21 11:21:03,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2020-09-21 11:21:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-21 11:21:03,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2020-09-21 11:21:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-21 11:21:03,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 169 transitions. [2020-09-21 11:21:03,372 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 169 transitions. Word has length 69 [2020-09-21 11:21:03,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:03,372 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 169 transitions. [2020-09-21 11:21:03,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 11:21:03,373 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 169 transitions. [2020-09-21 11:21:03,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-21 11:21:03,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:03,377 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:03,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:21:03,377 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:03,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:03,378 INFO L82 PathProgramCache]: Analyzing trace with hash -908952008, now seen corresponding path program 3 times [2020-09-21 11:21:03,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:03,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553127761] [2020-09-21 11:21:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,436 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:03,436 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,436 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,437 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 11:21:03,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 11:21:03,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:03,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 11:21:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:03,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,464 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:03,464 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,465 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,465 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:03,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:03,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:03,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:03,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:03,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,502 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:03,503 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,503 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,503 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-21 11:21:03,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 11:21:03,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 11:21:03,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 11:21:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,583 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:03,584 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,584 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,584 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:03,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:21:03,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:03,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:03,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:03,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,638 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:03,639 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,639 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,639 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:03,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 11:21:03,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:03,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:03,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:03,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:03,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,688 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:03,689 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,689 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,690 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:03,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:03,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:03,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:03,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:03,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,715 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:03,715 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,715 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,716 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:03,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:03,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:03,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,723 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:03,723 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,723 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,724 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:03,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:03,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:03,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:03,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,745 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:03,745 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,746 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,746 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:03,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:21:03,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:03,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:03,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 11:21:03,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:03,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,831 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:03,831 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,832 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,832 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:03,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:03,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:03,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:03,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:03,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:03,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,900 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:03,900 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,900 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,900 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:03,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:03,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:03,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:03,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:03,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:03,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,907 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:03,907 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,908 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,908 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:03,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:03,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:03,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:03,917 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:03,917 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:03,917 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:03,918 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:03,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:03,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:03,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:03,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-21 11:21:03,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553127761] [2020-09-21 11:21:03,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:03,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 11:21:03,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101941731] [2020-09-21 11:21:03,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 11:21:03,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:03,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 11:21:03,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:21:03,942 INFO L87 Difference]: Start difference. First operand 111 states and 169 transitions. Second operand 13 states. [2020-09-21 11:21:04,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:04,360 INFO L93 Difference]: Finished difference Result 248 states and 418 transitions. [2020-09-21 11:21:04,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 11:21:04,361 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-09-21 11:21:04,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:04,363 INFO L225 Difference]: With dead ends: 248 [2020-09-21 11:21:04,363 INFO L226 Difference]: Without dead ends: 141 [2020-09-21 11:21:04,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:21:04,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-21 11:21:04,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 119. [2020-09-21 11:21:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-21 11:21:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 176 transitions. [2020-09-21 11:21:04,382 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 176 transitions. Word has length 82 [2020-09-21 11:21:04,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:04,384 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 176 transitions. [2020-09-21 11:21:04,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 11:21:04,384 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 176 transitions. [2020-09-21 11:21:04,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-21 11:21:04,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:04,391 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:04,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:21:04,392 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:04,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:04,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1229769625, now seen corresponding path program 2 times [2020-09-21 11:21:04,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:04,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908851248] [2020-09-21 11:21:04,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,449 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:04,449 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,449 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,450 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-21 11:21:04,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:21:04,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:04,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,502 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:04,502 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,502 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,503 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:04,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:04,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:04,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:04,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,525 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:04,526 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,526 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,526 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 11:21:04,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:04,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:21:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-21 11:21:04,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:04,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,559 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:04,559 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,560 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,560 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 11:21:04,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:21:04,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-21 11:21:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:04,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,595 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:04,595 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,595 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,595 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:04,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:04,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:04,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,642 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:04,643 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,643 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,643 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:04,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:04,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:04,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:04,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:04,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:04,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,689 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:04,690 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,690 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,690 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:04,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:04,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:04,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:04,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,698 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:04,698 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,698 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,699 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:04,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:04,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:04,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:04,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:04,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,709 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:04,710 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,710 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,710 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:04,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:04,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:04,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:04,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:04,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,724 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:04,725 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,725 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,726 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:04,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:21:04,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:04,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 11:21:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,763 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:04,764 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,764 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,765 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:04,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:04,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:21:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:04,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,778 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:04,778 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,779 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,779 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:04,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:04,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:04,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:04,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,789 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:04,789 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,790 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,790 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:04,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:04,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:04,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:04,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:04,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:04,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,796 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:04,796 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,797 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,797 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:04,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:04,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:04,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:04,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:04,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:04,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:04,803 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:04,804 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:04,804 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:04,804 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:04,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:04,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:04,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:04,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:04,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:04,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 42 proven. 55 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-09-21 11:21:04,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908851248] [2020-09-21 11:21:04,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:04,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:21:04,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446754260] [2020-09-21 11:21:04,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:21:04,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:04,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:21:04,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:21:04,831 INFO L87 Difference]: Start difference. First operand 119 states and 176 transitions. Second operand 9 states. [2020-09-21 11:21:05,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:05,058 INFO L93 Difference]: Finished difference Result 215 states and 344 transitions. [2020-09-21 11:21:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:21:05,060 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-09-21 11:21:05,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:05,061 INFO L225 Difference]: With dead ends: 215 [2020-09-21 11:21:05,061 INFO L226 Difference]: Without dead ends: 87 [2020-09-21 11:21:05,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:21:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-21 11:21:05,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-21 11:21:05,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-21 11:21:05,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 115 transitions. [2020-09-21 11:21:05,074 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 115 transitions. Word has length 96 [2020-09-21 11:21:05,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:05,075 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 115 transitions. [2020-09-21 11:21:05,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:21:05,075 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 115 transitions. [2020-09-21 11:21:05,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-21 11:21:05,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:05,077 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:05,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:21:05,077 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:05,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:05,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2011292190, now seen corresponding path program 3 times [2020-09-21 11:21:05,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:05,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707187391] [2020-09-21 11:21:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,133 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:05,133 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,133 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,133 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 11:21:05,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:21:05,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:05,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,173 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,174 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,174 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:05,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:05,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:05,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,225 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:05,225 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,225 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,226 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-21 11:21:05,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:21:05,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-21 11:21:05,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,309 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:05,309 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,309 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,310 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:21:05,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:21:05,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:21:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 11:21:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,364 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:05,365 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,365 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,365 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:05,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:05,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:05,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,401 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:05,401 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,401 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,402 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:05,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:21:05,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:05,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:05,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,492 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,492 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,492 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,492 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:05,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,499 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,499 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,500 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,500 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:05,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:05,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,508 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,508 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,508 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:05,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:05,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,518 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,518 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,519 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,519 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:05,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:21:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,526 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,527 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,527 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,527 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:05,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:05,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,533 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,533 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,534 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,534 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:05,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:05,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 11:21:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,554 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,554 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,554 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,555 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:21:05,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:05,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 11:21:05,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,568 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,569 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,569 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,569 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:05,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,579 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,579 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,579 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,579 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:05,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:05,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:05,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,587 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,588 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,588 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,588 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:05,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:05,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,600 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,600 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,601 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,601 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:05,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:05,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,606 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,606 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,606 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,606 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:05,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:05,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,613 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,613 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,613 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,613 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:05,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,620 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,620 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,621 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,621 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:05,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:05,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:05,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:05,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:05,626 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:05,627 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:05,627 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:05,627 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:05,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:05,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:05,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:05,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 29 proven. 136 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-09-21 11:21:05,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707187391] [2020-09-21 11:21:05,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:05,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:21:05,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471654682] [2020-09-21 11:21:05,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:21:05,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:05,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:21:05,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:21:05,679 INFO L87 Difference]: Start difference. First operand 87 states and 115 transitions. Second operand 10 states. [2020-09-21 11:21:05,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:05,954 INFO L93 Difference]: Finished difference Result 90 states and 119 transitions. [2020-09-21 11:21:05,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 11:21:05,955 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2020-09-21 11:21:05,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:05,955 INFO L225 Difference]: With dead ends: 90 [2020-09-21 11:21:05,956 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:21:05,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-09-21 11:21:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:21:05,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:21:05,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:21:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:21:05,958 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2020-09-21 11:21:05,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:05,958 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:21:05,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:21:05,958 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:21:05,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:21:05,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:21:05,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:21:07,180 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 21 [2020-09-21 11:21:07,528 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 24 [2020-09-21 11:21:07,532 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:21:07,532 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:21:07,532 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:21:07,533 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:21:07,533 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:21:07,533 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:21:07,533 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-09-21 11:21:07,533 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-09-21 11:21:07,533 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2020-09-21 11:21:07,533 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2020-09-21 11:21:07,534 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-21 11:21:07,534 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-09-21 11:21:07,534 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (= main_~x~0 4) [2020-09-21 11:21:07,534 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-21 11:21:07,534 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2020-09-21 11:21:07,534 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-09-21 11:21:07,535 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= 2 |fibo2_#in~n|)) [2020-09-21 11:21:07,535 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-21 11:21:07,535 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (and (let ((.cse0 (<= |fibo2_#t~ret2| 1)) (.cse1 (<= 1 |fibo2_#t~ret2|))) (or (and (<= |fibo2_#in~n| 3) (<= 3 fibo2_~n) .cse0 .cse1) (and (<= 4 |fibo2_#in~n|) (= fibo2_~n |fibo2_#in~n|)) (and .cse0 .cse1 (< 1 fibo2_~n) (<= |fibo2_#in~n| 2)))) (<= fibo2_~n |fibo2_#in~n|)) [2020-09-21 11:21:07,536 INFO L268 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-09-21 11:21:07,536 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-21 11:21:07,536 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-09-21 11:21:07,536 INFO L268 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-09-21 11:21:07,536 INFO L268 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-09-21 11:21:07,536 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-09-21 11:21:07,537 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (<= 2 |fibo1_#in~n|) (= fibo1_~n |fibo1_#in~n|)) [2020-09-21 11:21:07,537 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-21 11:21:07,537 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (not (= fibo1_~n 2))) (.cse1 (<= 2 fibo1_~n)) (.cse2 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= |fibo1_#in~n| 3) .cse0 .cse1 (<= fibo1_~n |fibo1_#in~n|)) (and (= |fibo1_#t~ret0| 1) (<= |fibo1_#in~n| 2) (<= 2 |fibo1_#in~n|) .cse2) (and (<= 2 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 2) .cse0 .cse1 .cse2) (and (<= 5 |fibo1_#in~n|) .cse2))) [2020-09-21 11:21:07,537 INFO L268 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-09-21 11:21:07,537 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-09-21 11:21:07,537 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-21 11:21:07,538 INFO L268 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-09-21 11:21:07,538 INFO L268 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-09-21 11:21:07,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:21:07 BoogieIcfgContainer [2020-09-21 11:21:07,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:21:07,551 INFO L168 Benchmark]: Toolchain (without parser) took 10539.44 ms. Allocated memory was 143.1 MB in the beginning and 333.4 MB in the end (delta: 190.3 MB). Free memory was 105.2 MB in the beginning and 214.4 MB in the end (delta: -109.1 MB). Peak memory consumption was 195.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:07,552 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:21:07,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.24 ms. Allocated memory is still 143.1 MB. Free memory was 104.6 MB in the beginning and 94.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:07,553 INFO L168 Benchmark]: Boogie Preprocessor took 112.78 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 94.6 MB in the beginning and 182.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:07,561 INFO L168 Benchmark]: RCFGBuilder took 329.25 ms. Allocated memory is still 203.9 MB. Free memory was 182.8 MB in the beginning and 169.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:07,562 INFO L168 Benchmark]: TraceAbstraction took 9788.48 ms. Allocated memory was 203.9 MB in the beginning and 333.4 MB in the end (delta: 129.5 MB). Free memory was 169.2 MB in the beginning and 214.4 MB in the end (delta: -45.2 MB). Peak memory consumption was 198.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:07,567 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.24 ms. Allocated memory is still 143.1 MB. Free memory was 104.6 MB in the beginning and 94.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.78 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 94.6 MB in the beginning and 182.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 329.25 ms. Allocated memory is still 203.9 MB. Free memory was 182.8 MB in the beginning and 169.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9788.48 ms. Allocated memory was 203.9 MB in the beginning and 333.4 MB in the end (delta: 129.5 MB). Free memory was 169.2 MB in the beginning and 214.4 MB in the end (delta: -45.2 MB). Peak memory consumption was 198.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.0s, OverallIterations: 14, TraceHistogramMax: 10, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 409 SDtfs, 358 SDslu, 2126 SDs, 0 SdLazy, 1721 SolverSat, 217 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 257 SyntacticMatches, 4 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 86 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 362 PreInvPairs, 444 NumberOfFragments, 113 HoareAnnotationTreeSize, 362 FomulaSimplifications, 3011 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 11 FomulaSimplificationsInter, 1564 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 760 NumberOfCodeBlocks, 760 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 746 ConstructedInterpolants, 0 QuantifiedInterpolants, 140149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 736/1077 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...