/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:33:16,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:33:16,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:33:16,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:33:16,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:33:16,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:33:16,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:33:16,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:33:16,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:33:16,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:33:16,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:33:16,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:33:16,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:33:16,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:33:16,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:33:16,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:33:16,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:33:16,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:33:16,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:33:16,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:33:16,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:33:16,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:33:16,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:33:16,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:33:16,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:33:16,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:33:16,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:33:16,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:33:16,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:33:16,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:33:16,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:33:16,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:33:16,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:33:16,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:33:16,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:33:16,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:33:16,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:33:16,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:33:16,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:33:16,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:33:16,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:33:16,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:33:16,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:33:16,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:33:16,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:33:16,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:33:16,522 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:33:16,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:33:16,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:33:16,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:33:16,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:33:16,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:33:16,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:33:16,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:33:16,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:33:16,524 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:33:16,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:33:16,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:33:16,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:33:16,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:33:16,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:33:16,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:33:16,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:33:16,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:33:16,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:33:16,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:33:16,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:33:16,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:33:16,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:33:16,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:33:16,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:33:16,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:33:17,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:33:17,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:33:17,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:33:17,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:33:17,041 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:33:17,042 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-24 21:33:17,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c7a6f70c/d2a662f74c3d420f83d8fd90997e6b94/FLAG92556db92 [2020-09-24 21:33:17,713 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:33:17,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-24 21:33:17,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c7a6f70c/d2a662f74c3d420f83d8fd90997e6b94/FLAG92556db92 [2020-09-24 21:33:18,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c7a6f70c/d2a662f74c3d420f83d8fd90997e6b94 [2020-09-24 21:33:18,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:33:18,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:33:18,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:33:18,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:33:18,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:33:18,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:33:18" (1/1) ... [2020-09-24 21:33:18,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d4521a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:18, skipping insertion in model container [2020-09-24 21:33:18,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:33:18" (1/1) ... [2020-09-24 21:33:18,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:33:18,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:33:18,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:33:18,318 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:33:18,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:33:18,356 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:33:18,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:18 WrapperNode [2020-09-24 21:33:18,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:33:18,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:33:18,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:33:18,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:33:18,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:18" (1/1) ... [2020-09-24 21:33:18,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:18" (1/1) ... [2020-09-24 21:33:18,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:18" (1/1) ... [2020-09-24 21:33:18,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:18" (1/1) ... [2020-09-24 21:33:18,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:18" (1/1) ... [2020-09-24 21:33:18,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:18" (1/1) ... [2020-09-24 21:33:18,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:18" (1/1) ... [2020-09-24 21:33:18,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:33:18,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:33:18,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:33:18,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:33:18,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:33:18,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:33:18,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:33:18,541 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 21:33:18,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:33:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:33:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:33:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 21:33:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:33:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:33:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:33:18,754 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:33:18,754 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:33:18,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:33:18 BoogieIcfgContainer [2020-09-24 21:33:18,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:33:18,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:33:18,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:33:18,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:33:18,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:33:18" (1/3) ... [2020-09-24 21:33:18,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52522039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:33:18, skipping insertion in model container [2020-09-24 21:33:18,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:18" (2/3) ... [2020-09-24 21:33:18,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52522039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:33:18, skipping insertion in model container [2020-09-24 21:33:18,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:33:18" (3/3) ... [2020-09-24 21:33:18,770 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2020-09-24 21:33:18,783 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:33:18,797 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:33:18,825 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:33:18,874 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:33:18,874 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:33:18,874 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:33:18,875 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:33:18,875 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:33:18,875 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:33:18,875 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:33:18,876 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:33:18,904 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 21:33:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 21:33:18,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:18,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:33:18,917 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:18,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:18,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 21:33:18,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:18,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079849031] [2020-09-24 21:33:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:19,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:19,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:19,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:19,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:33:19,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:33:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 21:33:19,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:33:19,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:33:19,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:19,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:19,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:19,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:19,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:33:19,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:19,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:19,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:19,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:19,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:19,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:19,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 21:33:19,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:19,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:33:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:33:19,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079849031] [2020-09-24 21:33:19,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:33:19,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:33:19,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086015833] [2020-09-24 21:33:19,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:33:19,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:19,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:33:19,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:33:19,480 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 21:33:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:19,606 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 21:33:19,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:33:19,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 21:33:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:19,620 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:33:19,621 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 21:33:19,625 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 [2020-09-24 21:33:19,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 21:33:19,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 21:33:19,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:33:19,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:33:19,683 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 21:33:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:19,683 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:33:19,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:33:19,684 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:33:19,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 21:33:19,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:19,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:33:19,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:33:19,687 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:19,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:19,688 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 21:33:19,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:19,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987064475] [2020-09-24 21:33:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:19,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:19,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:19,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:19,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 21:33:19,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:33:19,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 21:33:19,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:19,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:19,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:19,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:19,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:19,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:19,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:19,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:33:19,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:19,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:33:19,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:19,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:19,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:19,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:19,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:19,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 21:33:19,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:33:19,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987064475] [2020-09-24 21:33:19,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:33:19,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:33:19,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899142818] [2020-09-24 21:33:19,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:33:19,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:19,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:33:19,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:33:19,973 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 21:33:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:20,046 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 21:33:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:33:20,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 21:33:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:20,049 INFO L225 Difference]: With dead ends: 36 [2020-09-24 21:33:20,049 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 21:33:20,050 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 [2020-09-24 21:33:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 21:33:20,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 21:33:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:33:20,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:33:20,059 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 21:33:20,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:20,060 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:33:20,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:33:20,060 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:33:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 21:33:20,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:20,062 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:33:20,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:33:20,063 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:20,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:20,064 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 21:33:20,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:20,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875728638] [2020-09-24 21:33:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:20,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:20,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:20,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:20,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:21,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:21,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:33:21,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:33:21,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1831 [2020-09-24 21:33:21,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:21,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:21,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:33:21,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:21,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:21,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:21,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:21,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:21,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:33:21,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:21,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:21,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:21,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:22,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:22,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:22,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:33:22,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:33:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-24 21:33:22,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:33:22,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:22,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:22,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:22,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:22,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:22,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:33:22,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:22,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:22,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:33:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:22,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:22,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:22,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:22,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:33:22,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:22,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:33:22,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875728638] [2020-09-24 21:33:22,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:22,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:33:22,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557017901] [2020-09-24 21:33:22,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:33:22,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:22,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:33:22,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:33:22,250 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 21:33:22,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:22,415 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 21:33:22,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:33:22,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 21:33:22,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:22,418 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:33:22,418 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 21:33:22,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:33:22,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 21:33:22,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 21:33:22,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 21:33:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 21:33:22,430 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 21:33:22,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:22,431 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 21:33:22,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:33:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 21:33:22,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:33:22,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:22,433 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:33:22,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:33:22,434 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:22,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:22,434 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 21:33:22,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:22,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993493466] [2020-09-24 21:33:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:22,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:22,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:22,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:24,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:24,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:33:24,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:33:24,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1700 [2020-09-24 21:33:24,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:33:24,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:24,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:24,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:24,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:24,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:24,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:24,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:33:24,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:24,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:24,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:24,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:24,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:24,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:24,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:24,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:33:24,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:33:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-09-24 21:33:24,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:24,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:33:24,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:24,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:24,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:24,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:24,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:24,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:33:24,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:24,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:33:24,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:24,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:33:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:24,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:24,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:24,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:24,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:33:24,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:24,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 21:33:24,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993493466] [2020-09-24 21:33:24,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:24,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 21:33:24,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491751624] [2020-09-24 21:33:24,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:33:24,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:24,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:33:24,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:33:24,721 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-09-24 21:33:24,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:24,823 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-09-24 21:33:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:33:24,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 21:33:24,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:24,829 INFO L225 Difference]: With dead ends: 58 [2020-09-24 21:33:24,831 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 21:33:24,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:33:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 21:33:24,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-09-24 21:33:24,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 21:33:24,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-09-24 21:33:24,854 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 35 [2020-09-24 21:33:24,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:24,854 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-09-24 21:33:24,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:33:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2020-09-24 21:33:24,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:33:24,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:24,861 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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, 1] [2020-09-24 21:33:24,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:33:24,862 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:24,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:24,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 21:33:24,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:24,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117184096] [2020-09-24 21:33:24,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:24,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:24,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:24,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:25,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:25,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:25,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:29,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:29,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:33:29,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:33:29,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:33:29,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:33:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:29,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:33:29,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:29,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:29,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:29,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:29,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:29,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:33:29,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:29,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:29,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:30,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:30,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:30,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:31,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:32,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:33:32,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:33:32,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2494 [2020-09-24 21:33:32,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:33:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:33:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:32,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:32,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:32,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:33:32,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:33:32,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 21:33:32,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:33:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:33:32,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:32,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:32,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:32,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:32,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:32,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:33:32,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:32,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:33:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:32,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:32,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:32,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:32,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:33:32,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:32,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:32,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:33:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:32,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:32,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:32,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:33:32,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:32,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:32,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:33:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 21:33:32,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117184096] [2020-09-24 21:33:32,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:32,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:33:32,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474866420] [2020-09-24 21:33:32,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:33:32,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:32,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:33:32,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:33:32,589 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand 7 states. [2020-09-24 21:33:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:32,717 INFO L93 Difference]: Finished difference Result 60 states and 86 transitions. [2020-09-24 21:33:32,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:33:32,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-24 21:33:32,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:32,720 INFO L225 Difference]: With dead ends: 60 [2020-09-24 21:33:32,720 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 21:33:32,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:33:32,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 21:33:32,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2020-09-24 21:33:32,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 21:33:32,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-24 21:33:32,733 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 51 [2020-09-24 21:33:32,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:32,734 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-24 21:33:32,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:33:32,734 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-24 21:33:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:33:32,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:32,737 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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, 1] [2020-09-24 21:33:32,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:33:32,737 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:32,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:32,738 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-24 21:33:32,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:32,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514520453] [2020-09-24 21:33:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:32,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:33,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:37,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 21:33:37,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:33:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:33:37,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:33:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:33:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:37,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:37,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:37,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:33:37,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:37,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:37,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:39,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:39,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:33:39,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:33:39,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-09-24 21:33:39,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:33:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:39,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:33:39,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:39,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:39,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:39,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:39,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:39,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:33:39,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:33:39,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-24 21:33:39,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:33:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:39,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:33:39,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:39,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:39,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:39,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:39,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:39,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:33:39,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:33:39,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:39,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:33:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:39,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:39,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:39,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:39,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:33:39,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:39,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:39,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:39,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:33:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:39,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:39,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:39,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:39,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:39,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:33:39,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:39,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 21:33:39,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514520453] [2020-09-24 21:33:39,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:39,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:33:39,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100101765] [2020-09-24 21:33:39,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:33:39,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:39,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:33:39,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:33:39,929 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 9 states. [2020-09-24 21:33:40,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:40,075 INFO L93 Difference]: Finished difference Result 126 states and 222 transitions. [2020-09-24 21:33:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:33:40,075 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 21:33:40,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:40,078 INFO L225 Difference]: With dead ends: 126 [2020-09-24 21:33:40,079 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 21:33:40,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:33:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 21:33:40,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 74. [2020-09-24 21:33:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 21:33:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 111 transitions. [2020-09-24 21:33:40,102 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 111 transitions. Word has length 52 [2020-09-24 21:33:40,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:40,103 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 111 transitions. [2020-09-24 21:33:40,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:33:40,103 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 111 transitions. [2020-09-24 21:33:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-24 21:33:40,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:40,109 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:33:40,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:33:40,109 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:40,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:40,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1607002557, now seen corresponding path program 3 times [2020-09-24 21:33:40,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:40,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659188923] [2020-09-24 21:33:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:40,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:40,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:40,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:40,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:40,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:41,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:41,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:41,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:41,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:45,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:45,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 21:33:45,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-24 21:33:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-24 21:33:45,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:33:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:33:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:45,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:45,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:45,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:45,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:45,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:45,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:33:45,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:45,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:45,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:45,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:45,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:45,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:45,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:45,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:45,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:45,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:46,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:46,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:50,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:50,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 21:33:50,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 21:33:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:33:50,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:33:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:33:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-24 21:33:50,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:50,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:50,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:50,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:50,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:50,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:50,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:51,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:33:51,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 21:33:51,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1670 [2020-09-24 21:33:51,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:33:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:33:51,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:52,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:52,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:52,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:33:52,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:33:52,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 21:33:52,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:52,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:33:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:33:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:52,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:52,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:52,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:52,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:52,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:33:52,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:52,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:52,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:33:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:52,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:52,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:52,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:33:52,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:52,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:52,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:33:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:52,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:52,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:52,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:33:52,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:52,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:52,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 21:33:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:52,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:53,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:55,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:57,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:57,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:33:57,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 21:33:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 21:33:57,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 21:33:57,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:57,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:57,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:58,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:58,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:33:58,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:33:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-09-24 21:33:58,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 21:33:58,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:58,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:58,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:33:58,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:33:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 21:33:58,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:58,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:58,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:58,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:58,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:58,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:58,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:33:58,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:58,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:33:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:58,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:58,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:58,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:58,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:58,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:33:58,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:58,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:58,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:58,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:33:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:58,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:58,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:58,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:33:58,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:58,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:58,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:58,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:58,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 21:33:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:58,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:58,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:58,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:58,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:58,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:33:58,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:58,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:58,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:58,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:58,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 86 proven. 176 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2020-09-24 21:33:58,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659188923] [2020-09-24 21:33:58,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:58,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:33:58,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485609450] [2020-09-24 21:33:58,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:33:58,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:58,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:33:58,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:33:58,294 INFO L87 Difference]: Start difference. First operand 74 states and 111 transitions. Second operand 15 states. [2020-09-24 21:33:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:58,869 INFO L93 Difference]: Finished difference Result 140 states and 215 transitions. [2020-09-24 21:33:58,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:33:58,869 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 119 [2020-09-24 21:33:58,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:58,872 INFO L225 Difference]: With dead ends: 140 [2020-09-24 21:33:58,872 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 21:33:58,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-09-24 21:33:58,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 21:33:58,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-09-24 21:33:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 21:33:58,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-09-24 21:33:58,884 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 119 [2020-09-24 21:33:58,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:58,885 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-09-24 21:33:58,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:33:58,885 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-09-24 21:33:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 21:33:58,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:58,887 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:33:58,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:33:58,888 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:58,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:58,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-24 21:33:58,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:58,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699906352] [2020-09-24 21:33:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:58,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:58,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:58,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:00,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:00,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:03,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 21:34:03,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:34:03,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:34:03,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:34:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:34:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:34:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:03,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:03,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:03,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:03,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:03,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:34:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:03,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:04,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:04,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:04,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:05,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:07,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:08,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:08,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 21:34:08,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:34:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:34:08,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:34:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:34:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 21:34:08,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:08,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:08,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:09,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:09,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:09,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:09,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking...