/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=SHALLOWEST --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/sum_15x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:48:56,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:48:56,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:48:56,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:48:56,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:48:56,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:48:56,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:48:56,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:48:56,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:48:56,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:48:56,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:48:56,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:48:56,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:48:56,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:48:56,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:48:56,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:48:56,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:48:56,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:48:56,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:48:56,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:48:56,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:48:56,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:48:56,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:48:56,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:48:56,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:48:56,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:48:56,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:48:56,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:48:56,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:48:56,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:48:56,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:48:56,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:48:56,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:48:56,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:48:56,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:48:56,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:48:56,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:48:56,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:48:56,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:48:56,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:48:56,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:48:56,486 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 23:48:56,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:48:56,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:48:56,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:48:56,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:48:56,532 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:48:56,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:48:56,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:48:56,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:48:56,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:48:56,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:48:56,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:48:56,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:48:56,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:48:56,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:48:56,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:48:56,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:48:56,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:48:56,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:48:56,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:48:56,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:48:56,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:48:56,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:48:56,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:48:56,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:48:56,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:48:56,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:48:56,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:48:56,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:48:56,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:48:56,538 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:48:57,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:48:57,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:48:57,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:48:57,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:48:57,035 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:48:57,036 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_15x0-2.c [2020-09-24 23:48:57,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d52cbde41/d3ba0744bf5b42789674ea7abefb227a/FLAG570738cc8 [2020-09-24 23:48:57,656 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:48:57,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_15x0-2.c [2020-09-24 23:48:57,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d52cbde41/d3ba0744bf5b42789674ea7abefb227a/FLAG570738cc8 [2020-09-24 23:48:57,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d52cbde41/d3ba0744bf5b42789674ea7abefb227a [2020-09-24 23:48:57,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:48:57,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:48:58,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:48:58,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:48:58,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:48:58,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:48:57" (1/1) ... [2020-09-24 23:48:58,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528baabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:58, skipping insertion in model container [2020-09-24 23:48:58,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:48:57" (1/1) ... [2020-09-24 23:48:58,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:48:58,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:48:58,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:48:58,252 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:48:58,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:48:58,288 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:48:58,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:58 WrapperNode [2020-09-24 23:48:58,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:48:58,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:48:58,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:48:58,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:48:58,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:58" (1/1) ... [2020-09-24 23:48:58,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:58" (1/1) ... [2020-09-24 23:48:58,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:58" (1/1) ... [2020-09-24 23:48:58,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:58" (1/1) ... [2020-09-24 23:48:58,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:58" (1/1) ... [2020-09-24 23:48:58,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:58" (1/1) ... [2020-09-24 23:48:58,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:58" (1/1) ... [2020-09-24 23:48:58,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:48:58,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:48:58,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:48:58,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:48:58,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:58" (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 23:48:58,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:48:58,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:48:58,481 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-24 23:48:58,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:48:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:48:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-24 23:48:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:48:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:48:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:48:58,689 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:48:58,690 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:48:58,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:48:58 BoogieIcfgContainer [2020-09-24 23:48:58,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:48:58,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:48:58,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:48:58,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:48:58,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:48:57" (1/3) ... [2020-09-24 23:48:58,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73234926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:48:58, skipping insertion in model container [2020-09-24 23:48:58,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:48:58" (2/3) ... [2020-09-24 23:48:58,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73234926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:48:58, skipping insertion in model container [2020-09-24 23:48:58,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:48:58" (3/3) ... [2020-09-24 23:48:58,704 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_15x0-2.c [2020-09-24 23:48:58,715 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:48:58,725 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:48:58,746 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:48:58,777 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:48:58,777 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:48:58,778 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:48:58,778 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:48:58,778 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:48:58,778 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:48:58,778 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:48:58,779 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:48:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-24 23:48:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 23:48:58,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:58,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:58,811 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:58,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:58,818 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-24 23:48:58,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:58,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779835774] [2020-09-24 23:48:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:59,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:59,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:48:59,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:59,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 23:48:59,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:48:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:48:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:48:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:48:59,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:59,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:59,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:59,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:48:59,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:59,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:48:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:59,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:59,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:59,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:48:59,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:59,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 23:48:59,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:48:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:48:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:48:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:59,303 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 23:48:59,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779835774] [2020-09-24 23:48:59,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:48:59,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:48:59,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451977678] [2020-09-24 23:48:59,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:48:59,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:59,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:48:59,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:48:59,340 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-24 23:48:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:59,521 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-24 23:48:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:48:59,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-24 23:48:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:59,535 INFO L225 Difference]: With dead ends: 39 [2020-09-24 23:48:59,536 INFO L226 Difference]: Without dead ends: 25 [2020-09-24 23:48:59,540 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 23:48:59,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-24 23:48:59,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-24 23:48:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-24 23:48:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-24 23:48:59,591 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-24 23:48:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:59,591 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-24 23:48:59,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:48:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-24 23:48:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 23:48:59,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:59,594 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:59,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:48:59,595 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:59,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:59,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-24 23:48:59,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:59,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141042849] [2020-09-24 23:48:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:59,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:59,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:00,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:00,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 23:49:00,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:00,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-09-24 23:49:00,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:00,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:49:00,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:49:00,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 23:49:00,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:00,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:00,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:00,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:00,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:49:00,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:00,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:49:00,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:00,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:49:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:00,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:00,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:00,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:00,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:49:00,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-24 23:49:00,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:49:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:49:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:00,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:00,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:00,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:00,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:49:00,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:00,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 23:49:00,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:00,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:49:00,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:00,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:49:00,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 23:49:00,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141042849] [2020-09-24 23:49:00,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:49:00,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 23:49:00,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95144975] [2020-09-24 23:49:00,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 23:49:00,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:00,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 23:49:00,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:49:00,481 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states. [2020-09-24 23:49:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:00,642 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-24 23:49:00,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:49:00,643 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-09-24 23:49:00,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:00,645 INFO L225 Difference]: With dead ends: 36 [2020-09-24 23:49:00,645 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 23:49:00,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-09-24 23:49:00,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 23:49:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 23:49:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 23:49:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 23:49:00,654 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-24 23:49:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:00,655 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 23:49:00,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 23:49:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 23:49:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 23:49:00,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:00,657 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:00,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:49:00,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:00,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:00,658 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-24 23:49:00,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:00,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161316821] [2020-09-24 23:49:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:00,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:01,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:01,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 23:49:01,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:01,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-09-24 23:49:01,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:01,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:49:01,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:49:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:49:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:01,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:01,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:01,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:49:01,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:01,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:49:01,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:01,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:01,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:49:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:01,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:01,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:01,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:49:01,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:01,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 23:49:01,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:49:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:49:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:49:01,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:01,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:01,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:01,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:49:01,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:01,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 23:49:01,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:49:01,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:01,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:49:01,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:01,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:01,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:01,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:01,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:49:01,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:01,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 23:49:01,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:01,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:49:01,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:01,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:49:01,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 23:49:01,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161316821] [2020-09-24 23:49:01,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:49:01,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 23:49:01,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306843849] [2020-09-24 23:49:01,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:49:01,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:01,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:49:01,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:49:01,530 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-24 23:49:01,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:01,653 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-24 23:49:01,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:49:01,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-24 23:49:01,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:01,655 INFO L225 Difference]: With dead ends: 41 [2020-09-24 23:49:01,656 INFO L226 Difference]: Without dead ends: 35 [2020-09-24 23:49:01,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:49:01,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-24 23:49:01,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-24 23:49:01,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 23:49:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-24 23:49:01,675 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-24 23:49:01,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:01,675 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-24 23:49:01,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:49:01,677 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-24 23:49:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 23:49:01,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:01,683 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:01,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:49:01,683 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:01,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:01,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-24 23:49:01,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:01,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933611921] [2020-09-24 23:49:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:01,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:01,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:02,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:02,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 23:49:02,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:02,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-09-24 23:49:02,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:02,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:49:02,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:49:02,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 23:49:02,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:02,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:02,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:02,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:02,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:49:02,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:02,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:49:02,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:02,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:02,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:02,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:49:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:02,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:02,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:49:02,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 23:49:02,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:49:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:49:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 23:49:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:02,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:02,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:02,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:02,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:49:02,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 23:49:02,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:49:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:49:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:03,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:03,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:49:03,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:03,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 23:49:03,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:03,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:49:03,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:03,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:49:03,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:03,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:03,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:03,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:03,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:49:03,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:03,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 23:49:03,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:49:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:49:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 23:49:03,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933611921] [2020-09-24 23:49:03,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:49:03,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:49:03,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608400593] [2020-09-24 23:49:03,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:49:03,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:03,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:49:03,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:49:03,134 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-24 23:49:03,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:03,230 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-24 23:49:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:49:03,232 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-24 23:49:03,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:03,233 INFO L225 Difference]: With dead ends: 46 [2020-09-24 23:49:03,233 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 23:49:03,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:49:03,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 23:49:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-24 23:49:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 23:49:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-24 23:49:03,249 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-24 23:49:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:03,250 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-24 23:49:03,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:49:03,250 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-24 23:49:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 23:49:03,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:03,254 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:03,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:49:03,254 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:03,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:03,254 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-24 23:49:03,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:03,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202227599] [2020-09-24 23:49:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:03,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:03,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:05,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:05,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 23:49:05,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:05,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2101 [2020-09-24 23:49:05,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:49:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:49:05,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 23:49:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:05,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:05,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:05,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:05,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:49:05,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:05,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:49:05,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:49:05,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:49:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:05,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:05,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:05,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:49:05,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:05,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-24 23:49:05,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:49:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:49:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:49:05,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:05,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:05,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:05,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:05,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:49:05,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:05,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-24 23:49:05,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:05,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:49:05,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:49:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:05,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:06,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:06,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:49:06,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:06,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 23:49:06,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:49:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:49:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:06,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:06,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:06,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:49:06,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:06,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 23:49:06,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:06,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:49:06,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:06,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:49:06,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:06,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:06,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:06,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:49:06,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:06,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:49:06,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:49:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:49:06,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-24 23:49:06,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202227599] [2020-09-24 23:49:06,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:49:06,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:49:06,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190054359] [2020-09-24 23:49:06,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:49:06,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:06,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:49:06,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:49:06,256 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2020-09-24 23:49:06,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:06,363 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 23:49:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 23:49:06,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-09-24 23:49:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:06,368 INFO L225 Difference]: With dead ends: 51 [2020-09-24 23:49:06,368 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 23:49:06,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:49:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 23:49:06,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-24 23:49:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 23:49:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-24 23:49:06,381 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-24 23:49:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:06,385 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-24 23:49:06,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:49:06,385 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-24 23:49:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 23:49:06,387 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:06,387 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:06,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:49:06,388 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:06,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:06,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-24 23:49:06,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:06,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599884826] [2020-09-24 23:49:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:10,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:10,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 23:49:10,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3783 [2020-09-24 23:49:10,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:49:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:49:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 23:49:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:10,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:10,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:49:10,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:10,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:49:10,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:10,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:49:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:10,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:10,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 23:49:10,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:10,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-24 23:49:10,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:49:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:49:10,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 23:49:10,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:10,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:10,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:10,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:10,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:49:10,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:10,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-24 23:49:10,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:49:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 23:49:10,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:10,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:10,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:10,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:49:10,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-24 23:49:10,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:10,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:49:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:49:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:10,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:11,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:11,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:49:11,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 23:49:11,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:49:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:49:11,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:11,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:11,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:11,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:11,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:49:11,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:11,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 23:49:11,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:49:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:49:11,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:11,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:11,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:49:11,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:11,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:49:11,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:49:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:49:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 72 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-24 23:49:11,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599884826] [2020-09-24 23:49:11,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:49:11,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 23:49:11,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598527071] [2020-09-24 23:49:11,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:49:11,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:11,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:49:11,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:49:11,178 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-24 23:49:11,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:11,300 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-24 23:49:11,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:49:11,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-24 23:49:11,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:11,302 INFO L225 Difference]: With dead ends: 56 [2020-09-24 23:49:11,302 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 23:49:11,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-24 23:49:11,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 23:49:11,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 23:49:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 23:49:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 23:49:11,311 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-24 23:49:11,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:11,311 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 23:49:11,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:49:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 23:49:11,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 23:49:11,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:11,313 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:11,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:49:11,314 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:11,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:11,314 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-24 23:49:11,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:11,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443214235] [2020-09-24 23:49:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:11,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:15,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:15,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 23:49:15,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4104 [2020-09-24 23:49:15,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 23:49:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:49:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 23:49:15,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:15,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:15,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:15,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:49:15,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:49:15,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:15,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:49:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:15,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:18,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:18,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 23:49:18,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:18,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3074 [2020-09-24 23:49:18,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:18,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 23:49:18,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 23:49:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:18,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:19,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:19,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 23:49:19,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:19,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-09-24 23:49:19,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 23:49:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:19,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 23:49:19,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:19,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:19,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:19,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:19,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:49:19,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:19,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-24 23:49:19,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 23:49:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 23:49:19,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:19,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:19,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:19,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:19,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:49:19,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:19,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-24 23:49:19,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:49:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:49:20,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:20,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:20,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:20,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:20,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:49:20,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-24 23:49:20,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:20,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:49:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:49:20,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:20,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:20,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:20,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:49:20,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:20,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 23:49:20,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:49:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:20,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:49:20,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:20,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:20,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:20,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:20,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:49:20,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:20,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:49:20,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:20,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:49:20,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:20,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:49:20,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 6 proven. 101 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-09-24 23:49:20,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443214235] [2020-09-24 23:49:20,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:49:20,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 23:49:20,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350700874] [2020-09-24 23:49:20,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 23:49:20,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:20,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 23:49:20,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-09-24 23:49:20,497 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 23:49:21,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:21,029 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-24 23:49:21,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 23:49:21,030 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 23:49:21,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:21,035 INFO L225 Difference]: With dead ends: 61 [2020-09-24 23:49:21,035 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 23:49:21,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=358, Invalid=1534, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 23:49:21,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 23:49:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 23:49:21,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 23:49:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-24 23:49:21,052 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-24 23:49:21,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:21,052 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-24 23:49:21,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 23:49:21,056 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-24 23:49:21,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 23:49:21,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:21,057 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:21,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:49:21,061 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:21,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:21,062 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-24 23:49:21,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:21,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913969777] [2020-09-24 23:49:21,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:21,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:25,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:25,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 23:49:25,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:25,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4901 [2020-09-24 23:49:25,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 23:49:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:49:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:49:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:25,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:25,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:25,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:49:25,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:25,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:49:25,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:26,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:26,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:49:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:26,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:26,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:26,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 23:49:26,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-24 23:49:26,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:26,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 23:49:26,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:49:26,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 23:49:26,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:26,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:26,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:26,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:26,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 23:49:26,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:26,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-24 23:49:26,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 23:49:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 23:49:26,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:26,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:26,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:27,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:27,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 23:49:27,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:27,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 23:49:27,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:27,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:49:27,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:27,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 23:49:27,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:27,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:27,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:27,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:49:27,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:27,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-24 23:49:27,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:49:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 23:49:27,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:27,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:27,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:27,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:49:27,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-24 23:49:27,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:49:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:49:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:27,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:27,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:27,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:49:27,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 23:49:27,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:49:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:49:27,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:27,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:27,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:27,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:49:27,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:27,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 23:49:27,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:49:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:49:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:27,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:27,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:27,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:27,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:49:27,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 23:49:27,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:49:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:49:27,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 15 proven. 149 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 23:49:27,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913969777] [2020-09-24 23:49:27,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:49:27,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 23:49:27,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855369374] [2020-09-24 23:49:27,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:49:27,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:27,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:49:27,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:49:27,793 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 14 states. [2020-09-24 23:49:27,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:27,955 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-24 23:49:27,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:49:27,956 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-09-24 23:49:27,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:27,958 INFO L225 Difference]: With dead ends: 66 [2020-09-24 23:49:27,958 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 23:49:27,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=303, Unknown=0, NotChecked=0, Total=462 [2020-09-24 23:49:27,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 23:49:27,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-24 23:49:27,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 23:49:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-24 23:49:27,970 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-24 23:49:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:27,971 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-24 23:49:27,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:49:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-24 23:49:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-24 23:49:27,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:27,972 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:27,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 23:49:27,973 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:27,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-24 23:49:27,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:27,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965294308] [2020-09-24 23:49:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:28,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:28,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:33,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:33,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 23:49:33,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:33,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 23:49:33,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-24 23:49:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:49:33,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 23:49:33,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:33,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:33,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:33,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:33,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:49:33,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:33,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:49:33,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:33,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:49:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:33,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:33,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:38,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:38,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 23:49:38,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:38,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 23:49:38,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:38,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-24 23:49:38,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:38,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 23:49:38,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:38,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:38,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:38,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:38,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 23:49:38,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:38,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-09-24 23:49:38,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 23:49:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 23:49:38,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:38,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:39,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:39,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:39,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 23:49:39,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:39,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-24 23:49:39,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:39,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 23:49:39,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:39,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 23:49:39,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:39,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:39,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:40,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:40,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 23:49:40,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-09-24 23:49:40,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 23:49:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 23:49:40,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:40,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:40,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:40,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:40,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:49:40,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:40,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-24 23:49:40,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:40,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 23:49:40,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:40,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 23:49:40,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:40,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:40,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:40,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:40,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:49:40,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:40,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 23:49:40,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:49:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:40,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:49:40,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:40,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:40,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:40,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:40,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:49:40,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:40,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 23:49:40,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:49:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:49:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:40,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:41,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:41,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:41,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:49:41,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:41,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 23:49:41,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:49:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:49:41,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:41,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:41,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:41,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:49:41,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 23:49:41,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:49:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:49:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 14 proven. 178 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 23:49:41,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965294308] [2020-09-24 23:49:41,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:49:41,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 23:49:41,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421909571] [2020-09-24 23:49:41,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 23:49:41,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:41,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 23:49:41,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2020-09-24 23:49:41,250 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 25 states. [2020-09-24 23:49:41,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:41,942 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-24 23:49:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 23:49:41,943 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 90 [2020-09-24 23:49:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:41,945 INFO L225 Difference]: With dead ends: 71 [2020-09-24 23:49:41,945 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 23:49:41,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=547, Invalid=2209, Unknown=0, NotChecked=0, Total=2756 [2020-09-24 23:49:41,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 23:49:41,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-24 23:49:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 23:49:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-24 23:49:41,955 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-24 23:49:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:41,955 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-24 23:49:41,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 23:49:41,955 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-24 23:49:41,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-24 23:49:41,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:41,957 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:41,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 23:49:41,957 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:41,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:41,958 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-24 23:49:41,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:41,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204751465] [2020-09-24 23:49:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:41,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:42,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:46,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:46,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 23:49:46,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 23:49:46,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:46,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-09-24 23:49:46,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:49:46,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 23:49:46,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:47,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:47,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:47,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:49:47,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:47,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:49:47,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:47,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:47,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:47,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 23:49:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:47,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:47,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:52,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:52,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 23:49:52,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:49:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:49:52,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-24 23:49:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 23:49:52,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:52,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:49:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:52,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking...