/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:27:24,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:27:24,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:27:24,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:27:24,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:27:24,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:27:24,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:27:24,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:27:24,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:27:24,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:27:24,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:27:24,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:27:24,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:27:24,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:27:24,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:27:24,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:27:24,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:27:24,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:27:24,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:27:24,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:27:24,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:27:24,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:27:24,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:27:24,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:27:24,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:27:24,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:27:24,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:27:24,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:27:24,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:27:24,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:27:24,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:27:24,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:27:24,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:27:24,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:27:24,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:27:24,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:27:24,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:27:24,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:27:24,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:27:24,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:27:24,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:27:24,741 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 [2020-09-25 05:27:24,770 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:27:24,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:27:24,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:27:24,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:27:24,772 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:27:24,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:27:24,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:27:24,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:27:24,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:27:24,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:27:24,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:27:24,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:27:24,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:27:24,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:27:24,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:27:24,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:27:24,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:27:24,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:27:24,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:27:24,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:27:24,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:27:24,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:27:24,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:27:24,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:27:24,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:27:24,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:27:24,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:27:24,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:27:24,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:27:24,777 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:27:25,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:27:25,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:27:25,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:27:25,284 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:27:25,285 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:27:25,286 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-25 05:27:25,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ed7e2b96/a7f250d5ce7c4481a602303f695c0871/FLAG57d1b0d17 [2020-09-25 05:27:25,872 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:27:25,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-25 05:27:25,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ed7e2b96/a7f250d5ce7c4481a602303f695c0871/FLAG57d1b0d17 [2020-09-25 05:27:26,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ed7e2b96/a7f250d5ce7c4481a602303f695c0871 [2020-09-25 05:27:26,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:27:26,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:27:26,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:27:26,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:27:26,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:27:26,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:27:26" (1/1) ... [2020-09-25 05:27:26,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:26, skipping insertion in model container [2020-09-25 05:27:26,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:27:26" (1/1) ... [2020-09-25 05:27:26,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:27:26,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:27:26,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:27:26,519 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:27:26,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:27:26,558 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:27:26,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:26 WrapperNode [2020-09-25 05:27:26,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:27:26,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:27:26,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:27:26,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:27:26,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:26" (1/1) ... [2020-09-25 05:27:26,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:26" (1/1) ... [2020-09-25 05:27:26,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:26" (1/1) ... [2020-09-25 05:27:26,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:26" (1/1) ... [2020-09-25 05:27:26,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:26" (1/1) ... [2020-09-25 05:27:26,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:26" (1/1) ... [2020-09-25 05:27:26,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:26" (1/1) ... [2020-09-25 05:27:26,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:27:26,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:27:26,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:27:26,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:27:26,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:26" (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 [2020-09-25 05:27:26,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:27:26,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:27:26,756 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 05:27:26,756 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 05:27:26,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:27:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:27:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:27:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 05:27:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 05:27:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:27:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:27:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:27:26,992 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:27:26,993 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:27:26,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:27:26 BoogieIcfgContainer [2020-09-25 05:27:26,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:27:27,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:27:27,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:27:27,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:27:27,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:27:26" (1/3) ... [2020-09-25 05:27:27,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39de07c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:27:27, skipping insertion in model container [2020-09-25 05:27:27,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:27:26" (2/3) ... [2020-09-25 05:27:27,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39de07c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:27:27, skipping insertion in model container [2020-09-25 05:27:27,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:27:26" (3/3) ... [2020-09-25 05:27:27,009 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_25-1.c [2020-09-25 05:27:27,021 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:27:27,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:27:27,062 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:27:27,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:27:27,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:27:27,098 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:27:27,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:27:27,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:27:27,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:27:27,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:27:27,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:27:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 05:27:27,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 05:27:27,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:27,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:27,137 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:27,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:27,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 05:27:27,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:27,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958682638] [2020-09-25 05:27:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:27,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:27,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:27:27,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-25 05:27:27,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:27,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:27:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:27,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:27:27,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:27,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:27,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:27,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:27,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:27,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:27,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:27,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:27,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:27,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:27,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:27,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:27,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:27:27,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:27,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:27:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:27:27,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:27:27,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958682638] [2020-09-25 05:27:27,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:27,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:27:27,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426565320] [2020-09-25 05:27:27,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:27:27,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:27,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:27:27,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:27:27,659 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 05:27:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:27,769 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 05:27:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:27:27,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 05:27:27,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:27,785 INFO L225 Difference]: With dead ends: 58 [2020-09-25 05:27:27,786 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 05:27:27,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:27,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 05:27:27,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 05:27:27,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 05:27:27,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 05:27:27,852 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 05:27:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:27,852 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 05:27:27,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:27:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 05:27:27,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 05:27:27,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:27,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:27,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:27:27,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:27,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:27,857 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 05:27:27,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:27,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615060090] [2020-09-25 05:27:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:27,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:28,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:27:28,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 05:27:28,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:28,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:28,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:28,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:28,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:28,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:28,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:28,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:27:28,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:28,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:28,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:28,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:28,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:28,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:28,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:28,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:27:28,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:28,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:28,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:28,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:27:28,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615060090] [2020-09-25 05:27:28,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:28,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:27:28,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546170630] [2020-09-25 05:27:28,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:27:28,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:28,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:27:28,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:27:28,146 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 05:27:28,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:28,225 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 05:27:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:27:28,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 05:27:28,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:28,228 INFO L225 Difference]: With dead ends: 50 [2020-09-25 05:27:28,228 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 05:27:28,229 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 [2020-09-25 05:27:28,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 05:27:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 05:27:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 05:27:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 05:27:28,240 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 05:27:28,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:28,241 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 05:27:28,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:27:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 05:27:28,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 05:27:28,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:28,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:28,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:27:28,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:28,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:28,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 05:27:28,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:28,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766035376] [2020-09-25 05:27:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:28,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:30,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:30,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 05:27:30,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:27:30,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2064 [2020-09-25 05:27:30,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:30,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:27:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:30,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:30,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:30,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:30,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:30,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:30,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:30,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:30,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:30,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:30,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:30,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:30,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:30,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:30,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:30,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 05:27:30,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:30,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:30,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:30,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:30,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:30,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:30,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:30,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:30,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:30,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:30,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:27:30,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:30,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:30,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:30,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:30,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:30,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:30,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:27:30,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:30,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:30,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:30,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:30,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:30,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:27:30,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766035376] [2020-09-25 05:27:30,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:27:30,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:27:30,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946427708] [2020-09-25 05:27:30,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:30,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:30,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:30,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:30,681 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 05:27:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:30,838 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 05:27:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:27:30,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 05:27:30,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:30,841 INFO L225 Difference]: With dead ends: 58 [2020-09-25 05:27:30,841 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 05:27:30,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:30,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 05:27:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 05:27:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:27:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 05:27:30,853 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 05:27:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:30,854 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 05:27:30,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 05:27:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 05:27:30,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:30,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:30,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:27:30,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:30,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:30,857 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 05:27:30,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:30,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173943126] [2020-09-25 05:27:30,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:30,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:30,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:31,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:31,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:32,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 05:27:32,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:27:32,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1721 [2020-09-25 05:27:32,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:32,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:32,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:27:32,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 05:27:32,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:27:32,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:32,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:32,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:32,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:32,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:32,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:32,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:32,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:32,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:32,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:32,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:33,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:33,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:27:33,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:27:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-09-25 05:27:33,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:33,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:27:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:27:33,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:33,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:33,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:33,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:33,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:33,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:33,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:27:33,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:33,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:33,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:27:33,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:33,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:33,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:33,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:33,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:33,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:33,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:33,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:27:33,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:33,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:27:33,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 05:27:33,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173943126] [2020-09-25 05:27:33,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:33,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:27:33,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741326951] [2020-09-25 05:27:33,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:27:33,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:33,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:27:33,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:33,287 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 05:27:33,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:33,408 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2020-09-25 05:27:33,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:27:33,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 05:27:33,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:33,411 INFO L225 Difference]: With dead ends: 76 [2020-09-25 05:27:33,411 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 05:27:33,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:27:33,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 05:27:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-09-25 05:27:33,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:27:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 05:27:33,425 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 35 [2020-09-25 05:27:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:33,426 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 05:27:33,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:27:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 05:27:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 05:27:33,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:33,429 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:33,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:27:33,429 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:33,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:33,430 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 05:27:33,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:33,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737107124] [2020-09-25 05:27:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:33,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:33,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:33,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:33,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:35,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:38,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:38,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 05:27:38,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:27:38,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:27:38,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:38,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:27:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:27:38,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:38,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:38,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:38,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:38,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:38,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:27:38,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:38,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:38,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:38,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:38,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:38,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:38,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:38,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:38,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:38,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:27:38,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-25 05:27:38,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:38,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:27:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:27:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:38,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:38,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:38,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:38,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:38,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:38,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:27:38,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:38,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:38,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:27:38,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:38,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:27:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:38,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:39,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:39,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:39,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 05:27:39,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:39,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:39,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:39,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:39,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:39,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:39,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:27:39,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:39,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:39,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:39,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:39,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:39,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:39,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:39,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:39,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:27:39,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:39,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:39,092 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:27:39,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737107124] [2020-09-25 05:27:39,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:39,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:27:39,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512693773] [2020-09-25 05:27:39,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:27:39,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:39,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:27:39,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:39,095 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 6 states. [2020-09-25 05:27:39,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:39,188 INFO L93 Difference]: Finished difference Result 108 states and 147 transitions. [2020-09-25 05:27:39,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:27:39,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-25 05:27:39,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:39,191 INFO L225 Difference]: With dead ends: 108 [2020-09-25 05:27:39,191 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 05:27:39,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:27:39,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 05:27:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 05:27:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:27:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 05:27:39,203 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 51 [2020-09-25 05:27:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:39,204 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 05:27:39,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:27:39,204 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 05:27:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 05:27:39,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:39,207 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:39,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:27:39,207 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:39,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:39,208 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 2 times [2020-09-25 05:27:39,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:39,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653636093] [2020-09-25 05:27:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:39,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:39,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:42,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:44,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 05:27:44,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:27:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:27:44,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:44,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:27:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:27:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:44,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:44,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:44,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:44,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:44,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:44,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:44,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:44,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:47,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:47,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:27:47,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:27:47,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3016 [2020-09-25 05:27:47,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:47,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:27:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:27:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:47,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:47,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:47,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:47,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:47,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:47,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:47,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 05:27:47,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:47,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:47,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:27:47,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:47,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:27:47,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:47,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:47,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:47,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:47,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:47,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:47,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:47,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:47,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:47,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:47,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:47,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:47,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:47,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:47,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:47,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:47,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:47,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:47,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:27:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:47,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:47,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:47,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:27:47,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:47,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:27:47,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:47,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:27:47,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 05:27:47,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653636093] [2020-09-25 05:27:47,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:47,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:27:47,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274863265] [2020-09-25 05:27:47,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:27:47,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:47,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:27:47,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:47,452 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 7 states. [2020-09-25 05:27:47,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:47,579 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2020-09-25 05:27:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:27:47,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 05:27:47,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:47,582 INFO L225 Difference]: With dead ends: 72 [2020-09-25 05:27:47,582 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 05:27:47,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:27:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 05:27:47,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 05:27:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 05:27:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 05:27:47,593 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 51 [2020-09-25 05:27:47,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:47,594 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 05:27:47,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:27:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 05:27:47,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 05:27:47,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:47,597 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:47,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:27:47,597 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:47,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:47,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 05:27:47,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:47,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873703443] [2020-09-25 05:27:47,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:47,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:47,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:47,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:48,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:52,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 05:27:52,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:27:52,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:27:52,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:52,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:52,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 05:27:52,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:52,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:52,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:27:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:52,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:27:52,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:27:52,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:52,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:52,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:27:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:52,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:53,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:54,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:57,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 05:27:57,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:27:57,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:27:57,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:57,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:57,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:57,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:27:57,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:57,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:27:57,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:57,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:57,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:57,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:27:57,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:27:57,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:57,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:57,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:57,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:57,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:57,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:57,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:57,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:57,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:57,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:57,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:57,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:57,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:57,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:57,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:27:57,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:57,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:27:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:57,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 05:27:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:57,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:57,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:27:57,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 05:27:57,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:57,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:27:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:27:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:57,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:57,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:27:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:57,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:57,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:57,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:57,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:27:57,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:57,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:27:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:27:57,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:27:57,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:57,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 05:27:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:27:57,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:27:57,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:27:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:27:57,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:27:57,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:27:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:27:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 05:27:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:27:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:27:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 05:27:57,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873703443] [2020-09-25 05:27:57,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:27:57,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:27:57,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047701207] [2020-09-25 05:27:57,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:27:57,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:27:57,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:27:57,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:27:57,829 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 6 states. [2020-09-25 05:27:57,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:27:57,902 INFO L93 Difference]: Finished difference Result 104 states and 138 transitions. [2020-09-25 05:27:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:27:57,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 05:27:57,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:27:57,904 INFO L225 Difference]: With dead ends: 104 [2020-09-25 05:27:57,904 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 05:27:57,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:27:57,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 05:27:57,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 05:27:57,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 05:27:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2020-09-25 05:27:57,914 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 67 [2020-09-25 05:27:57,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:27:57,914 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2020-09-25 05:27:57,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:27:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2020-09-25 05:27:57,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 05:27:57,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:27:57,917 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:27:57,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:27:57,918 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:27:57,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:27:57,918 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 05:27:57,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:27:57,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940866755] [2020-09-25 05:27:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:27:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:27:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:58,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:58,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:58,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:27:59,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:00,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:02,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:28:02,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 05:28:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:28:02,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:02,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:28:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:28:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 05:28:02,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:02,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:02,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:02,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:28:02,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:02,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:02,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:02,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:28:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:03,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:03,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:05,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:06,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:07,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:07,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:07,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 05:28:07,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 05:28:07,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:28:07,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:07,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:28:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:28:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 05:28:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:08,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:28:08,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:08,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:28:08,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:08,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:28:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:08,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:08,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:08,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:08,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:08,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:08,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:08,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:08,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:08,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:08,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:08,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:08,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:08,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:08,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:08,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:08,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:28:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:08,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:08,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:28:08,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 05:28:08,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:08,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:28:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:28:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:08,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:08,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:08,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:08,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:08,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:28:08,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:08,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:08,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:28:08,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:08,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:08,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:08,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:28:08,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:08,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:28:08,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 05:28:08,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940866755] [2020-09-25 05:28:08,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:28:08,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:28:08,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407465477] [2020-09-25 05:28:08,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:28:08,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:08,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:28:08,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:28:08,358 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 9 states. [2020-09-25 05:28:08,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:08,511 INFO L93 Difference]: Finished difference Result 82 states and 109 transitions. [2020-09-25 05:28:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:28:08,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 05:28:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:08,513 INFO L225 Difference]: With dead ends: 82 [2020-09-25 05:28:08,513 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 05:28:08,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:28:08,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 05:28:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-09-25 05:28:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 05:28:08,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2020-09-25 05:28:08,526 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 69 [2020-09-25 05:28:08,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:08,527 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2020-09-25 05:28:08,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:28:08,527 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2020-09-25 05:28:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 05:28:08,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:08,528 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:08,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:28:08,529 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:08,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:08,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 05:28:08,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:08,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143743510] [2020-09-25 05:28:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:08,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:08,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:09,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:13,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 05:28:13,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 05:28:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:28:13,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:13,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:28:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:28:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 05:28:13,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:13,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:13,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:13,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:13,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:28:13,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:13,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:13,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:28:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:13,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:18,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:28:18,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:28:18,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 05:28:18,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:18,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:28:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:28:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 05:28:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:18,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:18,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:28:18,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:28:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-25 05:28:18,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:18,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:28:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:18,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:28:18,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:18,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:18,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:18,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:18,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:28:18,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:18,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:28:18,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:18,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:18,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:18,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:28:18,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:18,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:28:18,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:18,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 05:28:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:18,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:18,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:19,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:28:19,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:28:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-25 05:28:19,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:19,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:28:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:28:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:28:19,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:19,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:28:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:19,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:19,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:19,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:19,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:28:19,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:19,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:28:19,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:28:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:19,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:19,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:28:19,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:28:19,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:19,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:28:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:28:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 05:28:19,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143743510] [2020-09-25 05:28:19,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:28:19,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:28:19,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085943971] [2020-09-25 05:28:19,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:28:19,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:19,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:28:19,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:28:19,583 INFO L87 Difference]: Start difference. First operand 68 states and 89 transitions. Second operand 10 states. [2020-09-25 05:28:19,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:19,821 INFO L93 Difference]: Finished difference Result 158 states and 249 transitions. [2020-09-25 05:28:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:28:19,821 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-09-25 05:28:19,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:19,823 INFO L225 Difference]: With dead ends: 158 [2020-09-25 05:28:19,823 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 05:28:19,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:28:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 05:28:19,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-09-25 05:28:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-25 05:28:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 134 transitions. [2020-09-25 05:28:19,837 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 134 transitions. Word has length 71 [2020-09-25 05:28:19,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:19,837 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 134 transitions. [2020-09-25 05:28:19,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:28:19,838 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 134 transitions. [2020-09-25 05:28:19,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 05:28:19,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:19,840 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:19,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:28:19,840 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:19,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:19,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 05:28:19,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:19,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963325016] [2020-09-25 05:28:19,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:19,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:20,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:20,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:20,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking...