/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:42:06,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:42:06,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:42:07,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:42:07,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:42:07,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:42:07,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:42:07,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:42:07,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:42:07,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:42:07,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:42:07,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:42:07,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:42:07,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:42:07,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:42:07,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:42:07,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:42:07,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:42:07,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:42:07,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:42:07,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:42:07,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:42:07,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:42:07,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:42:07,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:42:07,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:42:07,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:42:07,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:42:07,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:42:07,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:42:07,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:42:07,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:42:07,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:42:07,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:42:07,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:42:07,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:42:07,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:42:07,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:42:07,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:42:07,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:42:07,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:42:07,043 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 06:42:07,068 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:42:07,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:42:07,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:42:07,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:42:07,070 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:42:07,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:42:07,071 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:42:07,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:42:07,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:42:07,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:42:07,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:42:07,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:42:07,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:42:07,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:42:07,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:42:07,073 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:42:07,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:42:07,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:42:07,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:42:07,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:42:07,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:42:07,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:42:07,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:42:07,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:42:07,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:42:07,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:42:07,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:42:07,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:42:07,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:42:07,075 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:42:07,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:42:07,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:42:07,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:42:07,590 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:42:07,592 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:42:07,593 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 06:42:07,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e346fcd7c/113c8200e42648d498de685db41ec470/FLAG4e23a48c4 [2020-09-25 06:42:08,356 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:42:08,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 06:42:08,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e346fcd7c/113c8200e42648d498de685db41ec470/FLAG4e23a48c4 [2020-09-25 06:42:08,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e346fcd7c/113c8200e42648d498de685db41ec470 [2020-09-25 06:42:08,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:42:08,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:42:08,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:08,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:42:08,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:42:08,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:08" (1/1) ... [2020-09-25 06:42:08,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4757cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:08, skipping insertion in model container [2020-09-25 06:42:08,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:08" (1/1) ... [2020-09-25 06:42:08,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:42:08,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:42:09,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:09,371 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:42:09,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:09,482 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:42:09,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:09 WrapperNode [2020-09-25 06:42:09,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:09,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:42:09,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:42:09,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:42:09,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:09" (1/1) ... [2020-09-25 06:42:09,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:09" (1/1) ... [2020-09-25 06:42:09,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:09" (1/1) ... [2020-09-25 06:42:09,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:09" (1/1) ... [2020-09-25 06:42:09,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:09" (1/1) ... [2020-09-25 06:42:09,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:09" (1/1) ... [2020-09-25 06:42:09,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:09" (1/1) ... [2020-09-25 06:42:09,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:42:09,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:42:09,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:42:09,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:42:09,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:09" (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 06:42:09,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:42:09,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:42:09,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:42:09,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:42:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:42:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:42:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:42:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:42:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:42:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:42:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:42:11,349 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:42:11,350 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:42:11,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:11 BoogieIcfgContainer [2020-09-25 06:42:11,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:42:11,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:42:11,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:42:11,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:42:11,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:42:08" (1/3) ... [2020-09-25 06:42:11,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f42e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:11, skipping insertion in model container [2020-09-25 06:42:11,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:09" (2/3) ... [2020-09-25 06:42:11,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f42e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:11, skipping insertion in model container [2020-09-25 06:42:11,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:11" (3/3) ... [2020-09-25 06:42:11,372 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label13.c [2020-09-25 06:42:11,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:42:11,400 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:42:11,427 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:42:11,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:42:11,469 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:42:11,470 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:42:11,470 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:42:11,470 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:42:11,470 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:42:11,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:42:11,471 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:42:11,508 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:42:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 06:42:11,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:11,532 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:11,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:11,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:11,541 INFO L82 PathProgramCache]: Analyzing trace with hash -946278635, now seen corresponding path program 1 times [2020-09-25 06:42:11,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:11,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283324542] [2020-09-25 06:42:11,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:11,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:12,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:12,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:13,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:16,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:16,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 06:42:16,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:42:16,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 06:42:16,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:16,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:42:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 06:42:16,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:42:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:17,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:17,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:17,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 06:42:17,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:17,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:17,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:42:17,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:42:17,261 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 06:42:17,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283324542] [2020-09-25 06:42:17,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:17,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:42:17,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641534478] [2020-09-25 06:42:17,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:42:17,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:17,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:42:17,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:42:17,297 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:42:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:19,655 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 06:42:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:42:19,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-09-25 06:42:19,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:19,683 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 06:42:19,683 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 06:42:19,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 06:42:19,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 06:42:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 06:42:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 06:42:19,818 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 151 [2020-09-25 06:42:19,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:19,819 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 06:42:19,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:42:19,820 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 06:42:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 06:42:19,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:19,827 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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 06:42:19,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:42:19,828 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:19,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1054538660, now seen corresponding path program 1 times [2020-09-25 06:42:19,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:19,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987589870] [2020-09-25 06:42:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:19,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:22,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:23,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:23,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:24,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:24,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 06:42:24,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:42:24,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:42:24,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:24,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:42:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:42:24,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:24,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:25,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:25,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:25,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:42:25,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:25,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:25,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:42:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:42:25,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:25,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:25,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:25,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:25,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 06:42:25,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:25,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:25,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:25,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:25,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:25,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:25,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987589870] [2020-09-25 06:42:25,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:25,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:42:25,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259136171] [2020-09-25 06:42:25,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:42:25,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:25,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:42:25,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:42:25,286 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 8 states. [2020-09-25 06:42:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:27,906 INFO L93 Difference]: Finished difference Result 1723 states and 2114 transitions. [2020-09-25 06:42:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:42:27,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 172 [2020-09-25 06:42:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:27,918 INFO L225 Difference]: With dead ends: 1723 [2020-09-25 06:42:27,919 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 06:42:27,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:42:27,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 06:42:27,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 952. [2020-09-25 06:42:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-09-25 06:42:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1181 transitions. [2020-09-25 06:42:27,990 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1181 transitions. Word has length 172 [2020-09-25 06:42:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:27,995 INFO L479 AbstractCegarLoop]: Abstraction has 952 states and 1181 transitions. [2020-09-25 06:42:27,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:42:27,995 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1181 transitions. [2020-09-25 06:42:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 06:42:28,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:28,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:28,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:42:28,006 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:28,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:28,007 INFO L82 PathProgramCache]: Analyzing trace with hash 657710585, now seen corresponding path program 1 times [2020-09-25 06:42:28,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:28,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508959895] [2020-09-25 06:42:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:28,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:28,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:28,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:31,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:33,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:33,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 06:42:33,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:33,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:42:33,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:33,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:42:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:42:33,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:33,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:33,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:33,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:33,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:33,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:42:33,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:33,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:33,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:33,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:33,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:33,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:33,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:33,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 06:42:33,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:33,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:33,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:33,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:33,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:42:33,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:33,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:33,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:33,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:33,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:42:33,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 06:42:33,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:33,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:33,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:33,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:42:33,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:33,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508959895] [2020-09-25 06:42:33,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:33,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:33,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226812085] [2020-09-25 06:42:33,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:33,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:33,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:33,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:33,597 INFO L87 Difference]: Start difference. First operand 952 states and 1181 transitions. Second operand 7 states. [2020-09-25 06:42:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:36,331 INFO L93 Difference]: Finished difference Result 2262 states and 2924 transitions. [2020-09-25 06:42:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:42:36,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 06:42:36,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:36,345 INFO L225 Difference]: With dead ends: 2262 [2020-09-25 06:42:36,346 INFO L226 Difference]: Without dead ends: 1334 [2020-09-25 06:42:36,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:36,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-09-25 06:42:36,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1256. [2020-09-25 06:42:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2020-09-25 06:42:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1549 transitions. [2020-09-25 06:42:36,422 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1549 transitions. Word has length 201 [2020-09-25 06:42:36,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:36,423 INFO L479 AbstractCegarLoop]: Abstraction has 1256 states and 1549 transitions. [2020-09-25 06:42:36,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:36,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1549 transitions. [2020-09-25 06:42:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 06:42:36,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:36,433 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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 06:42:36,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:42:36,434 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:36,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:36,434 INFO L82 PathProgramCache]: Analyzing trace with hash 38975682, now seen corresponding path program 1 times [2020-09-25 06:42:36,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:36,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864998620] [2020-09-25 06:42:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:36,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:36,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:36,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:38,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:41,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:41,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 06:42:41,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:41,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:42:41,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:41,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 06:42:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:42:41,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:41,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:41,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:41,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:41,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:41,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:42:41,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:41,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:41,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:41,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:41,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:41,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:41,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:41,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:41,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:41,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:42:41,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:41,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:42:41,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:41,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:42:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:41,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 06:42:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:41,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:41,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:42:41,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:41,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 06:42:41,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:41,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:42:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:41,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864998620] [2020-09-25 06:42:41,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:41,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:41,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135155258] [2020-09-25 06:42:41,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:41,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:41,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:41,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:41,788 INFO L87 Difference]: Start difference. First operand 1256 states and 1549 transitions. Second operand 7 states. [2020-09-25 06:42:45,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:45,118 INFO L93 Difference]: Finished difference Result 2699 states and 3418 transitions. [2020-09-25 06:42:45,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:42:45,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-09-25 06:42:45,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:45,132 INFO L225 Difference]: With dead ends: 2699 [2020-09-25 06:42:45,133 INFO L226 Difference]: Without dead ends: 1451 [2020-09-25 06:42:45,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:45,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2020-09-25 06:42:45,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1393. [2020-09-25 06:42:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2020-09-25 06:42:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1687 transitions. [2020-09-25 06:42:45,200 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1687 transitions. Word has length 206 [2020-09-25 06:42:45,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:45,201 INFO L479 AbstractCegarLoop]: Abstraction has 1393 states and 1687 transitions. [2020-09-25 06:42:45,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:45,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1687 transitions. [2020-09-25 06:42:45,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 06:42:45,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:45,209 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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 06:42:45,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:42:45,210 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:45,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:45,210 INFO L82 PathProgramCache]: Analyzing trace with hash -495080653, now seen corresponding path program 1 times [2020-09-25 06:42:45,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:45,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997774886] [2020-09-25 06:42:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:45,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:46,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:46,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:50,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:50,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 06:42:50,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:42:50,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:50,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 06:42:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:42:50,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:50,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:50,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:50,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:50,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:50,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:50,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:42:50,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:50,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:50,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:50,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:50,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:50,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:50,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:42:50,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:50,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:42:50,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:50,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:42:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:50,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 06:42:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:50,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:50,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 06:42:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 06:42:50,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:50,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:42:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:50,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997774886] [2020-09-25 06:42:50,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:50,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:50,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421418308] [2020-09-25 06:42:50,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:50,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:50,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:50,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:50,653 INFO L87 Difference]: Start difference. First operand 1393 states and 1687 transitions. Second operand 7 states. [2020-09-25 06:42:52,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:52,715 INFO L93 Difference]: Finished difference Result 2524 states and 3044 transitions. [2020-09-25 06:42:52,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:42:52,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-09-25 06:42:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:52,726 INFO L225 Difference]: With dead ends: 2524 [2020-09-25 06:42:52,726 INFO L226 Difference]: Without dead ends: 1630 [2020-09-25 06:42:52,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:52,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2020-09-25 06:42:52,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1579. [2020-09-25 06:42:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-09-25 06:42:52,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 1886 transitions. [2020-09-25 06:42:52,796 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 1886 transitions. Word has length 210 [2020-09-25 06:42:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:52,796 INFO L479 AbstractCegarLoop]: Abstraction has 1579 states and 1886 transitions. [2020-09-25 06:42:52,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:52,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 1886 transitions. [2020-09-25 06:42:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 06:42:52,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:52,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:52,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:42:52,805 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:52,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:52,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1959609365, now seen corresponding path program 1 times [2020-09-25 06:42:52,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:52,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685503109] [2020-09-25 06:42:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking...