/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=0.2 --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/Problem10_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:29:56,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:29:56,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:29:56,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:29:56,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:29:56,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:29:56,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:29:56,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:29:56,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:29:56,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:29:56,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:29:56,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:29:56,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:29:56,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:29:56,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:29:56,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:29:56,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:29:56,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:29:56,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:29:56,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:29:56,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:29:56,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:29:56,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:29:56,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:29:56,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:29:56,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:29:56,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:29:56,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:29:56,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:29:56,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:29:56,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:29:56,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:29:56,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:29:56,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:29:56,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:29:56,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:29:56,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:29:56,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:29:56,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:29:56,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:29:56,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:29:56,822 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 04:29:56,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:29:56,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:29:56,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:29:56,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:29:56,878 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:29:56,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:29:56,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:29:56,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:29:56,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:29:56,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:29:56,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:29:56,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:29:56,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:29:56,880 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:29:56,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:29:56,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:29:56,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:29:56,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:29:56,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:29:56,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:29:56,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:29:56,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:56,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:29:56,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:29:56,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:29:56,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:29:56,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:29:56,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:29:56,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:29:56,883 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:29:57,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:29:57,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:29:57,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:29:57,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:29:57,378 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:29:57,379 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 04:29:57,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cd6866cd/2438583a84e647b6b590a0aed74a243d/FLAGfda747f3d [2020-09-25 04:29:58,144 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:29:58,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 04:29:58,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cd6866cd/2438583a84e647b6b590a0aed74a243d/FLAGfda747f3d [2020-09-25 04:29:58,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cd6866cd/2438583a84e647b6b590a0aed74a243d [2020-09-25 04:29:58,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:29:58,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:29:58,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:58,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:29:58,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:29:58,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:58" (1/1) ... [2020-09-25 04:29:58,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1dceb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:58, skipping insertion in model container [2020-09-25 04:29:58,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:58" (1/1) ... [2020-09-25 04:29:58,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:29:58,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:29:59,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:59,056 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:29:59,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:59,204 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:29:59,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59 WrapperNode [2020-09-25 04:29:59,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:59,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:29:59,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:29:59,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:29:59,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:29:59,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:29:59,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:29:59,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:29:59,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (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 04:29:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:29:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:29:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:29:59,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:29:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:29:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:29:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:29:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:29:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:29:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:29:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:30:00,784 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:30:00,784 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:30:00,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:00 BoogieIcfgContainer [2020-09-25 04:30:00,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:30:00,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:30:00,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:30:00,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:30:00,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:29:58" (1/3) ... [2020-09-25 04:30:00,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392ba3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:00, skipping insertion in model container [2020-09-25 04:30:00,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (2/3) ... [2020-09-25 04:30:00,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392ba3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:00, skipping insertion in model container [2020-09-25 04:30:00,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:00" (3/3) ... [2020-09-25 04:30:00,803 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label20.c [2020-09-25 04:30:00,814 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:30:00,825 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:30:00,847 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:30:00,883 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:30:00,884 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:30:00,884 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:30:00,884 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:30:00,884 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:30:00,884 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:30:00,884 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:30:00,885 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:30:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:30:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 04:30:00,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:00,925 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] [2020-09-25 04:30:00,926 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:00,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:00,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1331013031, now seen corresponding path program 1 times [2020-09-25 04:30:00,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:00,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431393015] [2020-09-25 04:30:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:01,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:01,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:30:01,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:01,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-09-25 04:30:01,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:01,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:01,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:01,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:30:01,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:30:01,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:30:01,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:01,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:01,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:01,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:01,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:30:01,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:01,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:01,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:30:01,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:01,736 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 04:30:01,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431393015] [2020-09-25 04:30:01,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:01,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:30:01,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240864896] [2020-09-25 04:30:01,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:30:01,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:01,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:30:01,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:30:01,774 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:30:03,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:03,767 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 04:30:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:30:03,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-25 04:30:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:03,801 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 04:30:03,801 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 04:30:03,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:03,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 04:30:03,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 04:30:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 04:30:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 04:30:03,904 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 47 [2020-09-25 04:30:03,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:03,905 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 04:30:03,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:30:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 04:30:03,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 04:30:03,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:03,913 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 04:30:03,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:30:03,914 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:03,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:03,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1207738435, now seen corresponding path program 1 times [2020-09-25 04:30:03,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:03,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949205069] [2020-09-25 04:30:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:04,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:04,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:04,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:05,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:05,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 04:30:05,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:30:05,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1701 [2020-09-25 04:30:05,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:05,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:30:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:30:05,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:30:05,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:05,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:05,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:05,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:05,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:05,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:30:05,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:05,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:05,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:05,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:05,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:05,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:05,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:05,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:30:05,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:05,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 04:30:05,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:05,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:05,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:05,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:05,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 04:30:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:06,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949205069] [2020-09-25 04:30:06,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:06,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:06,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716457040] [2020-09-25 04:30:06,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:06,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:06,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:06,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:06,036 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-25 04:30:07,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:07,958 INFO L93 Difference]: Finished difference Result 1417 states and 1827 transitions. [2020-09-25 04:30:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:07,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-09-25 04:30:07,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:07,965 INFO L225 Difference]: With dead ends: 1417 [2020-09-25 04:30:07,965 INFO L226 Difference]: Without dead ends: 889 [2020-09-25 04:30:07,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:07,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-09-25 04:30:08,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 849. [2020-09-25 04:30:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 04:30:08,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1040 transitions. [2020-09-25 04:30:08,038 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1040 transitions. Word has length 127 [2020-09-25 04:30:08,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:08,039 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1040 transitions. [2020-09-25 04:30:08,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:08,040 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1040 transitions. [2020-09-25 04:30:08,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 04:30:08,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:08,049 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 04:30:08,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:30:08,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:08,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:08,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1301933938, now seen corresponding path program 1 times [2020-09-25 04:30:08,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:08,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672168595] [2020-09-25 04:30:08,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:08,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:08,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:10,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 04:30:10,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:30:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2705 [2020-09-25 04:30:10,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:10,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 04:30:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:30:10,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:10,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:10,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:10,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:10,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:10,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:10,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:10,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:10,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:10,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:11,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:11,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:30:11,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 04:30:11,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:11,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 04:30:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:11,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672168595] [2020-09-25 04:30:11,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:11,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:30:11,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041847207] [2020-09-25 04:30:11,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:30:11,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:11,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:30:11,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:11,150 INFO L87 Difference]: Start difference. First operand 849 states and 1040 transitions. Second operand 6 states. [2020-09-25 04:30:13,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:13,570 INFO L93 Difference]: Finished difference Result 2311 states and 2981 transitions. [2020-09-25 04:30:13,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:30:13,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 04:30:13,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:13,581 INFO L225 Difference]: With dead ends: 2311 [2020-09-25 04:30:13,581 INFO L226 Difference]: Without dead ends: 1477 [2020-09-25 04:30:13,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 04:30:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2020-09-25 04:30:13,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1307. [2020-09-25 04:30:13,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1307 states. [2020-09-25 04:30:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1651 transitions. [2020-09-25 04:30:13,633 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1651 transitions. Word has length 138 [2020-09-25 04:30:13,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:13,633 INFO L479 AbstractCegarLoop]: Abstraction has 1307 states and 1651 transitions. [2020-09-25 04:30:13,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:30:13,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1651 transitions. [2020-09-25 04:30:13,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 04:30:13,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:13,639 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 04:30:13,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:13,639 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:13,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:13,640 INFO L82 PathProgramCache]: Analyzing trace with hash 342195782, now seen corresponding path program 1 times [2020-09-25 04:30:13,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:13,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587329716] [2020-09-25 04:30:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:13,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:17,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:17,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 04:30:17,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4054 [2020-09-25 04:30:17,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:17,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-09-25 04:30:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:30:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:17,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:17,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:17,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:17,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:17,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:17,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:30:17,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:17,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:17,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:17,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:17,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:17,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:17,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:17,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:17,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:30:17,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:17,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 04:30:17,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:17,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:17,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:17,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 04:30:17,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:18,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587329716] [2020-09-25 04:30:18,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:18,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:18,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781573522] [2020-09-25 04:30:18,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:18,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:18,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:18,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:18,053 INFO L87 Difference]: Start difference. First operand 1307 states and 1651 transitions. Second operand 5 states. [2020-09-25 04:30:20,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:20,052 INFO L93 Difference]: Finished difference Result 3614 states and 4715 transitions. [2020-09-25 04:30:20,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:20,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-25 04:30:20,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:20,069 INFO L225 Difference]: With dead ends: 3614 [2020-09-25 04:30:20,069 INFO L226 Difference]: Without dead ends: 2322 [2020-09-25 04:30:20,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2020-09-25 04:30:20,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 2107. [2020-09-25 04:30:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2107 states. [2020-09-25 04:30:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 2679 transitions. [2020-09-25 04:30:20,155 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 2679 transitions. Word has length 155 [2020-09-25 04:30:20,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:20,155 INFO L479 AbstractCegarLoop]: Abstraction has 2107 states and 2679 transitions. [2020-09-25 04:30:20,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:20,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 2679 transitions. [2020-09-25 04:30:20,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 04:30:20,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:20,166 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, 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, 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] [2020-09-25 04:30:20,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:30:20,167 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:20,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:20,167 INFO L82 PathProgramCache]: Analyzing trace with hash -627270772, now seen corresponding path program 1 times [2020-09-25 04:30:20,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:20,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171385837] [2020-09-25 04:30:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:20,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:21,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:24,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:24,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:25,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 04:30:25,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:30:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 04:30:25,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:25,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:30:25,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 04:30:25,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:25,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:25,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:25,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:25,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:25,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:25,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:25,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:25,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:30:25,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 04:30:25,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:25,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:25,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:25,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:25,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 04:30:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:25,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 04:30:25,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:25,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 04:30:25,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:25,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:25,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 04:30:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:25,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171385837] [2020-09-25 04:30:25,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:25,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:25,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770494713] [2020-09-25 04:30:25,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:25,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:25,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:25,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:25,991 INFO L87 Difference]: Start difference. First operand 2107 states and 2679 transitions. Second operand 7 states. [2020-09-25 04:30:28,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:28,406 INFO L93 Difference]: Finished difference Result 5405 states and 7350 transitions. [2020-09-25 04:30:28,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:30:28,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-09-25 04:30:28,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:28,431 INFO L225 Difference]: With dead ends: 5405 [2020-09-25 04:30:28,432 INFO L226 Difference]: Without dead ends: 3313 [2020-09-25 04:30:28,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:30:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2020-09-25 04:30:28,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 3039. [2020-09-25 04:30:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3039 states. [2020-09-25 04:30:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 3843 transitions. [2020-09-25 04:30:28,545 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 3843 transitions. Word has length 257 [2020-09-25 04:30:28,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:28,546 INFO L479 AbstractCegarLoop]: Abstraction has 3039 states and 3843 transitions. [2020-09-25 04:30:28,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:28,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 3843 transitions. [2020-09-25 04:30:28,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-09-25 04:30:28,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:28,559 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, 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, 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, 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] [2020-09-25 04:30:28,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:30:28,559 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:28,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:28,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2116617673, now seen corresponding path program 1 times [2020-09-25 04:30:28,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:28,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723669726] [2020-09-25 04:30:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:28,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:28,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:32,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:33,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:33,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-09-25 04:30:33,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:30:33,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:30:33,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:33,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:30:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 04:30:33,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:33,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:33,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:33,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:33,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:33,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:33,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:33,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:33,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:33,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:33,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:33,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:33,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:33,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:33,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:33,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:33,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 04:30:33,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:33,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:33,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:33,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:33,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:30:33,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:33,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:30:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:33,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:34,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:34,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 04:30:34,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:34,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 04:30:34,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:34,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 04:30:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:34,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723669726] [2020-09-25 04:30:34,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:34,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:34,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436241591] [2020-09-25 04:30:34,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:34,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:34,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:34,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:34,276 INFO L87 Difference]: Start difference. First operand 3039 states and 3843 transitions. Second operand 7 states. [2020-09-25 04:30:36,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:36,553 INFO L93 Difference]: Finished difference Result 6185 states and 7921 transitions. [2020-09-25 04:30:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:30:36,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-09-25 04:30:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:36,571 INFO L225 Difference]: With dead ends: 6185 [2020-09-25 04:30:36,571 INFO L226 Difference]: Without dead ends: 2173 [2020-09-25 04:30:36,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:30:36,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2173 states. [2020-09-25 04:30:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2173 to 2067. [2020-09-25 04:30:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2067 states. [2020-09-25 04:30:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2334 transitions. [2020-09-25 04:30:36,656 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2334 transitions. Word has length 266 [2020-09-25 04:30:36,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:36,657 INFO L479 AbstractCegarLoop]: Abstraction has 2067 states and 2334 transitions. [2020-09-25 04:30:36,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2334 transitions. [2020-09-25 04:30:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 04:30:36,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:36,667 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, 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, 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, 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] [2020-09-25 04:30:36,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:30:36,668 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:36,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:36,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1840366081, now seen corresponding path program 1 times [2020-09-25 04:30:36,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:36,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188693631] [2020-09-25 04:30:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:36,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:40,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:40,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:41,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-25 04:30:41,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:30:41,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:30:41,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:41,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:41,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:41,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 04:30:41,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 04:30:41,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:41,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:41,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:41,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:41,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:41,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:41,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:41,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:41,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:41,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:41,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:41,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:30:41,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 04:30:41,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:41,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:30:41,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:41,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 04:30:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:42,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:42,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:42,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 04:30:42,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:42,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 04:30:42,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:42,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 04:30:42,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:42,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188693631] [2020-09-25 04:30:42,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:42,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:42,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116103805] [2020-09-25 04:30:42,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:42,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:42,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:42,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:42,433 INFO L87 Difference]: Start difference. First operand 2067 states and 2334 transitions. Second operand 7 states. [2020-09-25 04:30:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:44,399 INFO L93 Difference]: Finished difference Result 4791 states and 5546 transitions. [2020-09-25 04:30:44,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:30:44,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-09-25 04:30:44,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:44,410 INFO L225 Difference]: With dead ends: 4791 [2020-09-25 04:30:44,411 INFO L226 Difference]: Without dead ends: 2739 [2020-09-25 04:30:44,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:30:44,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2020-09-25 04:30:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2543. [2020-09-25 04:30:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-09-25 04:30:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 2832 transitions. [2020-09-25 04:30:44,472 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 2832 transitions. Word has length 268 [2020-09-25 04:30:44,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:44,472 INFO L479 AbstractCegarLoop]: Abstraction has 2543 states and 2832 transitions. [2020-09-25 04:30:44,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 2832 transitions. [2020-09-25 04:30:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-09-25 04:30:44,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:44,483 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:44,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:30:44,483 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:44,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:44,484 INFO L82 PathProgramCache]: Analyzing trace with hash -898689456, now seen corresponding path program 1 times [2020-09-25 04:30:44,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:44,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28367254] [2020-09-25 04:30:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:44,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:44,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking...