/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=1.0 --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_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:00:08,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:00:08,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:00:08,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:00:08,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:00:08,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:00:08,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:00:08,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:00:08,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:00:08,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:00:08,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:00:08,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:00:08,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:00:08,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:00:08,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:00:08,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:00:08,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:00:08,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:00:08,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:00:08,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:00:08,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:00:08,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:00:08,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:00:08,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:00:08,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:00:08,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:00:08,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:00:08,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:00:08,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:00:08,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:00:08,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:00:08,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:00:08,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:00:08,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:00:08,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:00:08,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:00:08,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:00:08,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:00:08,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:00:08,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:00:08,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:00:08,774 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 09:00:08,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:00:08,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:00:08,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:00:08,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:00:08,829 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:00:08,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:00:08,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:00:08,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:00:08,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:00:08,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:00:08,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:00:08,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:00:08,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:00:08,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:00:08,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:00:08,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:00:08,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:00:08,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:00:08,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:00:08,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:00:08,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:00:08,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:00:08,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:00:08,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:00:08,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:00:08,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:00:08,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:00:08,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:00:08,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:00:08,836 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:00:09,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:00:09,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:00:09,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:00:09,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:00:09,296 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:00:09,297 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 09:00:09,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b752d86a8/5cbe5a5aa5434ec2b7884299e8261993/FLAG30576c781 [2020-09-25 09:00:09,978 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:00:09,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 09:00:10,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b752d86a8/5cbe5a5aa5434ec2b7884299e8261993/FLAG30576c781 [2020-09-25 09:00:10,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b752d86a8/5cbe5a5aa5434ec2b7884299e8261993 [2020-09-25 09:00:10,209 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:00:10,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:00:10,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:10,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:00:10,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:00:10,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:10" (1/1) ... [2020-09-25 09:00:10,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:10, skipping insertion in model container [2020-09-25 09:00:10,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:10" (1/1) ... [2020-09-25 09:00:10,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:00:10,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:00:10,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:10,789 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:00:11,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:11,070 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:00:11,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:11 WrapperNode [2020-09-25 09:00:11,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:11,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:00:11,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:00:11,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:00:11,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:11" (1/1) ... [2020-09-25 09:00:11,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:11" (1/1) ... [2020-09-25 09:00:11,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:11" (1/1) ... [2020-09-25 09:00:11,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:11" (1/1) ... [2020-09-25 09:00:11,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:11" (1/1) ... [2020-09-25 09:00:11,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:11" (1/1) ... [2020-09-25 09:00:11,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:11" (1/1) ... [2020-09-25 09:00:11,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:00:11,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:00:11,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:00:11,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:00:11,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:11" (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 09:00:11,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:00:11,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:00:11,305 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:00:11,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:00:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:00:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:00:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:00:11,306 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:00:11,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:00:11,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:00:11,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:00:12,610 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:00:12,610 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:00:12,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:12 BoogieIcfgContainer [2020-09-25 09:00:12,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:00:12,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:00:12,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:00:12,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:00:12,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:00:10" (1/3) ... [2020-09-25 09:00:12,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:12, skipping insertion in model container [2020-09-25 09:00:12,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:11" (2/3) ... [2020-09-25 09:00:12,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:12, skipping insertion in model container [2020-09-25 09:00:12,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:12" (3/3) ... [2020-09-25 09:00:12,629 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label19.c [2020-09-25 09:00:12,640 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:00:12,651 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:00:12,673 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:00:12,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:00:12,706 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:00:12,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:00:12,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:00:12,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:00:12,707 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:00:12,707 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:00:12,707 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:00:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:00:12,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 09:00:12,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:12,764 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] [2020-09-25 09:00:12,764 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:12,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:12,772 INFO L82 PathProgramCache]: Analyzing trace with hash 628562263, now seen corresponding path program 1 times [2020-09-25 09:00:12,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:12,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523682103] [2020-09-25 09:00:12,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:14,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:18,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:18,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 09:00:18,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:00:18,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-09-25 09:00:18,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:18,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:18,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:18,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:00:18,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 09:00:18,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 09:00:18,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:18,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:18,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:18,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 09:00:18,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:18,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:18,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:00:18,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:18,490 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 09:00:18,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523682103] [2020-09-25 09:00:18,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:18,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:00:18,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692864638] [2020-09-25 09:00:18,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:00:18,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:18,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:00:18,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:00:18,523 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:00:20,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:20,652 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 09:00:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:00:20,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 09:00:20,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:20,680 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 09:00:20,681 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 09:00:20,691 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 09:00:20,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 09:00:20,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 09:00:20,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 09:00:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 09:00:20,797 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 114 [2020-09-25 09:00:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:20,798 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 09:00:20,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:00:20,798 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 09:00:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 09:00:20,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:20,809 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] [2020-09-25 09:00:20,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:00:20,810 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:20,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1104563352, now seen corresponding path program 1 times [2020-09-25 09:00:20,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:20,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754517409] [2020-09-25 09:00:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:20,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:23,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 09:00:23,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:00:23,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2493 [2020-09-25 09:00:23,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:23,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:23,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:23,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 09:00:23,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 09:00:23,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:23,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:23,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:23,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:23,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:00:23,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:23,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:23,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:23,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:23,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:23,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:23,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:23,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:00:23,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:23,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:23,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:23,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:23,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:00:23,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:23,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754517409] [2020-09-25 09:00:23,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:23,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:00:23,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189960044] [2020-09-25 09:00:23,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:23,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:23,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:23,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:23,694 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 09:00:25,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:25,639 INFO L93 Difference]: Finished difference Result 1654 states and 2024 transitions. [2020-09-25 09:00:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:25,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 09:00:25,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:25,651 INFO L225 Difference]: With dead ends: 1654 [2020-09-25 09:00:25,651 INFO L226 Difference]: Without dead ends: 1014 [2020-09-25 09:00:25,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:00:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-25 09:00:25,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 950. [2020-09-25 09:00:25,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 09:00:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1142 transitions. [2020-09-25 09:00:25,696 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1142 transitions. Word has length 135 [2020-09-25 09:00:25,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:25,697 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1142 transitions. [2020-09-25 09:00:25,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:25,697 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1142 transitions. [2020-09-25 09:00:25,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 09:00:25,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:25,704 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:25,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:00:25,705 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:25,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:25,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1460590075, now seen corresponding path program 1 times [2020-09-25 09:00:25,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:25,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463937443] [2020-09-25 09:00:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:25,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:26,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:27,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:30,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:30,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:30,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:30,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 09:00:30,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:30,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-09-25 09:00:30,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:30,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:30,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:30,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 09:00:30,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 09:00:30,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:30,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:30,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:30,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:30,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:30,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:00:30,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:30,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:30,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:30,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:31,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:31,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:00:31,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:31,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:00:31,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:31,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:00:31,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:31,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 09:00:31,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:31,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:00:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:00:31,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463937443] [2020-09-25 09:00:31,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:31,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:00:31,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270517177] [2020-09-25 09:00:31,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:31,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:31,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:31,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:31,117 INFO L87 Difference]: Start difference. First operand 950 states and 1142 transitions. Second operand 7 states. [2020-09-25 09:00:33,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:33,696 INFO L93 Difference]: Finished difference Result 3191 states and 4128 transitions. [2020-09-25 09:00:33,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:00:33,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 09:00:33,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:33,712 INFO L225 Difference]: With dead ends: 3191 [2020-09-25 09:00:33,713 INFO L226 Difference]: Without dead ends: 2265 [2020-09-25 09:00:33,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:00:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2020-09-25 09:00:33,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1938. [2020-09-25 09:00:33,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1938 states. [2020-09-25 09:00:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2428 transitions. [2020-09-25 09:00:33,800 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2428 transitions. Word has length 152 [2020-09-25 09:00:33,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:33,801 INFO L479 AbstractCegarLoop]: Abstraction has 1938 states and 2428 transitions. [2020-09-25 09:00:33,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:33,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2428 transitions. [2020-09-25 09:00:33,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 09:00:33,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:33,815 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, 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] [2020-09-25 09:00:33,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:00:33,815 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:33,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:33,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1264932115, now seen corresponding path program 1 times [2020-09-25 09:00:33,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:33,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701265048] [2020-09-25 09:00:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:34,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:34,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:35,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:38,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 09:00:38,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:00:38,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:00:38,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:38,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 09:00:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 09:00:38,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:38,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:39,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:39,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:39,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:00:39,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:39,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:39,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:39,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:39,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:39,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:39,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:39,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:00:39,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:39,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:00:39,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:39,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:39,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:39,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:39,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 09:00:39,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:39,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:39,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:00:39,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:00:39,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701265048] [2020-09-25 09:00:39,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:39,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:00:39,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622576285] [2020-09-25 09:00:39,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:39,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:39,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:39,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:39,397 INFO L87 Difference]: Start difference. First operand 1938 states and 2428 transitions. Second operand 7 states. [2020-09-25 09:00:42,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:42,106 INFO L93 Difference]: Finished difference Result 5635 states and 7593 transitions. [2020-09-25 09:00:42,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:00:42,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-09-25 09:00:42,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:42,145 INFO L225 Difference]: With dead ends: 5635 [2020-09-25 09:00:42,145 INFO L226 Difference]: Without dead ends: 3731 [2020-09-25 09:00:42,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:00:42,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2020-09-25 09:00:42,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3277. [2020-09-25 09:00:42,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3277 states. [2020-09-25 09:00:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 4189 transitions. [2020-09-25 09:00:42,326 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 4189 transitions. Word has length 166 [2020-09-25 09:00:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:42,326 INFO L479 AbstractCegarLoop]: Abstraction has 3277 states and 4189 transitions. [2020-09-25 09:00:42,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 4189 transitions. [2020-09-25 09:00:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 09:00:42,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:42,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:42,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:00:42,346 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:42,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:42,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2072643828, now seen corresponding path program 1 times [2020-09-25 09:00:42,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:42,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052114423] [2020-09-25 09:00:42,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:42,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:44,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:44,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:47,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:47,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 09:00:47,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 09:00:47,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 09:00:47,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:47,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:47,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 09:00:47,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 09:00:47,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:47,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:47,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:47,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:47,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:47,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:47,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:00:47,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:47,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:47,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:47,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:47,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:47,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:47,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:47,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:47,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:47,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:00:47,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:47,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:00:47,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:47,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:47,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:47,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:47,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:47,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:47,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:00:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:47,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:47,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:47,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 09:00:47,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:47,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:00:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:00:47,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052114423] [2020-09-25 09:00:47,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:47,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:00:47,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292776368] [2020-09-25 09:00:47,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:00:47,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:47,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:00:47,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:00:47,764 INFO L87 Difference]: Start difference. First operand 3277 states and 4189 transitions. Second operand 6 states. [2020-09-25 09:00:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:49,726 INFO L93 Difference]: Finished difference Result 8105 states and 10571 transitions. [2020-09-25 09:00:49,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:00:49,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2020-09-25 09:00:49,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:49,746 INFO L225 Difference]: With dead ends: 8105 [2020-09-25 09:00:49,746 INFO L226 Difference]: Without dead ends: 2964 [2020-09-25 09:00:49,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:00:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-09-25 09:00:49,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2436. [2020-09-25 09:00:49,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2436 states. [2020-09-25 09:00:49,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3081 transitions. [2020-09-25 09:00:49,884 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3081 transitions. Word has length 173 [2020-09-25 09:00:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:49,885 INFO L479 AbstractCegarLoop]: Abstraction has 2436 states and 3081 transitions. [2020-09-25 09:00:49,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:00:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3081 transitions. [2020-09-25 09:00:49,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 09:00:49,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:49,897 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 09:00:49,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:00:49,898 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:49,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:49,898 INFO L82 PathProgramCache]: Analyzing trace with hash -513686346, now seen corresponding path program 1 times [2020-09-25 09:00:49,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:49,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676679397] [2020-09-25 09:00:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:54,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 09:00:54,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:00:54,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 09:00:54,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:54,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 09:00:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 09:00:54,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:55,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:55,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:55,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:55,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:55,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:55,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:00:55,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:55,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:55,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:55,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:55,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:55,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:55,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 09:00:55,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:55,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 09:00:55,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:55,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 09:00:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:55,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 09:00:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:55,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:55,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:55,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 09:00:55,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 09:00:55,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:55,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 09:00:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:00:55,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676679397] [2020-09-25 09:00:55,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:55,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:00:55,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213939559] [2020-09-25 09:00:55,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:55,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:55,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:55,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:55,381 INFO L87 Difference]: Start difference. First operand 2436 states and 3081 transitions. Second operand 7 states. [2020-09-25 09:00:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:57,552 INFO L93 Difference]: Finished difference Result 5070 states and 6381 transitions. [2020-09-25 09:00:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:57,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 09:00:57,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:57,565 INFO L225 Difference]: With dead ends: 5070 [2020-09-25 09:00:57,566 INFO L226 Difference]: Without dead ends: 2668 [2020-09-25 09:00:57,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:00:57,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2020-09-25 09:00:57,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2442. [2020-09-25 09:00:57,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2442 states. [2020-09-25 09:00:57,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3013 transitions. [2020-09-25 09:00:57,668 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3013 transitions. Word has length 222 [2020-09-25 09:00:57,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:57,669 INFO L479 AbstractCegarLoop]: Abstraction has 2442 states and 3013 transitions. [2020-09-25 09:00:57,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:57,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3013 transitions. [2020-09-25 09:00:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 09:00:57,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:57,682 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-25 09:00:57,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:00:57,683 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:57,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:57,683 INFO L82 PathProgramCache]: Analyzing trace with hash -319020448, now seen corresponding path program 1 times [2020-09-25 09:00:57,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:57,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758029702] [2020-09-25 09:00:57,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:57,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:57,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:57,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking...