/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/Problem02_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:28:52,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:28:52,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:28:52,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:28:52,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:28:52,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:28:52,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:28:52,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:28:52,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:28:52,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:28:52,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:28:52,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:28:52,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:28:52,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:28:52,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:28:52,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:28:52,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:28:52,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:28:52,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:28:52,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:28:52,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:28:52,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:28:52,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:28:52,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:28:52,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:28:52,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:28:52,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:28:52,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:28:52,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:28:52,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:28:52,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:28:52,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:28:52,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:28:52,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:28:52,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:28:52,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:28:52,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:28:52,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:28:52,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:28:52,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:28:52,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:28:52,114 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 04:28:52,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:28:52,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:28:52,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:28:52,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:28:52,144 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:28:52,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:28:52,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:28:52,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:28:52,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:28:52,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:28:52,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:28:52,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:28:52,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:28:52,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:28:52,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:28:52,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:28:52,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:28:52,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:28:52,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:28:52,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:28:52,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:28:52,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:52,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:28:52,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:28:52,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:28:52,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:28:52,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:28:52,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:28:52,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:28:52,149 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 04:28:52,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:28:52,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:28:52,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:28:52,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:28:52,632 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:28:52,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 04:28:52,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/859a97c87/6a1b4d5f2bf94d79a5b8c79de428506c/FLAGa87616875 [2020-09-25 04:28:53,430 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:28:53,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 04:28:53,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/859a97c87/6a1b4d5f2bf94d79a5b8c79de428506c/FLAGa87616875 [2020-09-25 04:28:53,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/859a97c87/6a1b4d5f2bf94d79a5b8c79de428506c [2020-09-25 04:28:53,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:28:53,641 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:28:53,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:53,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:28:53,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:28:53,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:53" (1/1) ... [2020-09-25 04:28:53,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fc17d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:53, skipping insertion in model container [2020-09-25 04:28:53,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:53" (1/1) ... [2020-09-25 04:28:53,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:28:53,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:28:54,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:54,177 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:28:54,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:54,440 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:28:54,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:54 WrapperNode [2020-09-25 04:28:54,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:54,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:28:54,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:28:54,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:28:54,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:54" (1/1) ... [2020-09-25 04:28:54,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:54" (1/1) ... [2020-09-25 04:28:54,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:54" (1/1) ... [2020-09-25 04:28:54,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:54" (1/1) ... [2020-09-25 04:28:54,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:54" (1/1) ... [2020-09-25 04:28:54,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:54" (1/1) ... [2020-09-25 04:28:54,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:54" (1/1) ... [2020-09-25 04:28:54,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:28:54,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:28:54,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:28:54,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:28:54,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:54" (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 04:28:54,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:28:54,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:28:54,633 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:28:54,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:28:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:28:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:28:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:28:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:28:54,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:28:54,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:28:54,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:28:56,014 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:28:56,015 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:28:56,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:56 BoogieIcfgContainer [2020-09-25 04:28:56,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:28:56,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:28:56,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:28:56,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:28:56,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:28:53" (1/3) ... [2020-09-25 04:28:56,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db5e3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:56, skipping insertion in model container [2020-09-25 04:28:56,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:54" (2/3) ... [2020-09-25 04:28:56,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db5e3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:56, skipping insertion in model container [2020-09-25 04:28:56,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:56" (3/3) ... [2020-09-25 04:28:56,043 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2020-09-25 04:28:56,054 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:28:56,069 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:28:56,091 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:28:56,126 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:28:56,126 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:28:56,126 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:28:56,126 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:28:56,127 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:28:56,127 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:28:56,127 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:28:56,127 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:28:56,159 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:28:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 04:28:56,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:56,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:56,182 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:56,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:56,191 INFO L82 PathProgramCache]: Analyzing trace with hash 79338610, now seen corresponding path program 1 times [2020-09-25 04:28:56,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:56,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907937638] [2020-09-25 04:28:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:56,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:59,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:01,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:01,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 04:29:01,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:29:01,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 04:29:01,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:01,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:29:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 04:29:01,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:29:01,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:01,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:01,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:01,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:01,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:01,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:29:01,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:01,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:29:01,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:01,767 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 04:29:01,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907937638] [2020-09-25 04:29:01,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:01,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:29:01,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656148142] [2020-09-25 04:29:01,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:29:01,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:01,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:29:01,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:29:01,801 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:29:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:04,247 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 04:29:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:29:04,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 04:29:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:04,278 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 04:29:04,278 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 04:29:04,288 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 04:29:04,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 04:29:04,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 04:29:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 04:29:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 04:29:04,397 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 127 [2020-09-25 04:29:04,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:04,398 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 04:29:04,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:29:04,399 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 04:29:04,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 04:29:04,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:04,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:04,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:29:04,408 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:04,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:04,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1605843042, now seen corresponding path program 1 times [2020-09-25 04:29:04,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:04,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443087515] [2020-09-25 04:29:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:04,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:04,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:05,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:06,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:06,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:09,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:09,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 04:29:09,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:29:09,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:29:09,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:09,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:29:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 04:29:09,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:09,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:09,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:09,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:09,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:09,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:29:09,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:09,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:09,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:09,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:09,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:09,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:09,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:09,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:09,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:09,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:29:09,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:09,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:29:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:09,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443087515] [2020-09-25 04:29:09,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:09,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:09,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081447340] [2020-09-25 04:29:09,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:09,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:09,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:09,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:09,782 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 04:29:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:11,813 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 04:29:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:11,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-25 04:29:11,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:11,829 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 04:29:11,829 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 04:29:11,833 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 04:29:11,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 04:29:11,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 04:29:11,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 04:29:11,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 04:29:11,882 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 145 [2020-09-25 04:29:11,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:11,883 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 04:29:11,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 04:29:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 04:29:11,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:11,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:11,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:29:11,889 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:11,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1464054185, now seen corresponding path program 1 times [2020-09-25 04:29:11,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:11,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836491863] [2020-09-25 04:29:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:13,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:13,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:16,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 04:29:16,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:29:16,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4339 [2020-09-25 04:29:16,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:16,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:16,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:16,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 04:29:16,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 04:29:16,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:16,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:16,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:16,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:16,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:29:16,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:16,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:16,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:16,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:16,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:16,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:16,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:29:16,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:16,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:29:16,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:16,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 04:29:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:16,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836491863] [2020-09-25 04:29:16,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:16,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:29:16,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998647327] [2020-09-25 04:29:16,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:29:16,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:16,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:29:16,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:16,494 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 6 states. [2020-09-25 04:29:19,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:19,323 INFO L93 Difference]: Finished difference Result 2820 states and 3635 transitions. [2020-09-25 04:29:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:29:19,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-25 04:29:19,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:19,331 INFO L225 Difference]: With dead ends: 2820 [2020-09-25 04:29:19,331 INFO L226 Difference]: Without dead ends: 1125 [2020-09-25 04:29:19,337 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 04:29:19,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-09-25 04:29:19,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1115. [2020-09-25 04:29:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2020-09-25 04:29:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1346 transitions. [2020-09-25 04:29:19,378 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1346 transitions. Word has length 161 [2020-09-25 04:29:19,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:19,378 INFO L479 AbstractCegarLoop]: Abstraction has 1115 states and 1346 transitions. [2020-09-25 04:29:19,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:29:19,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1346 transitions. [2020-09-25 04:29:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 04:29:19,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:19,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:19,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:29:19,384 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:19,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:19,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1343420525, now seen corresponding path program 1 times [2020-09-25 04:29:19,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:19,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124687434] [2020-09-25 04:29:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:19,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:19,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:19,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:20,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:24,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:24,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 04:29:24,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:29:24,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:29:24,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:24,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:29:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 04:29:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:29:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:24,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:24,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:24,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:24,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:24,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:24,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:29:24,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:24,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:24,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:24,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:24,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:24,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:24,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:29:24,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:24,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 04:29:24,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:24,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:29:24,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:24,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:29:24,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:24,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124687434] [2020-09-25 04:29:24,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:24,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:29:24,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251732774] [2020-09-25 04:29:24,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:29:24,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:24,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:29:24,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:29:24,941 INFO L87 Difference]: Start difference. First operand 1115 states and 1346 transitions. Second operand 8 states. [2020-09-25 04:29:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:28,521 INFO L93 Difference]: Finished difference Result 3322 states and 4266 transitions. [2020-09-25 04:29:28,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:29:28,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 04:29:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:28,541 INFO L225 Difference]: With dead ends: 3322 [2020-09-25 04:29:28,541 INFO L226 Difference]: Without dead ends: 2136 [2020-09-25 04:29:28,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:29:28,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-09-25 04:29:28,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2084. [2020-09-25 04:29:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2084 states. [2020-09-25 04:29:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2489 transitions. [2020-09-25 04:29:28,631 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2489 transitions. Word has length 165 [2020-09-25 04:29:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:28,631 INFO L479 AbstractCegarLoop]: Abstraction has 2084 states and 2489 transitions. [2020-09-25 04:29:28,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:29:28,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2489 transitions. [2020-09-25 04:29:28,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 04:29:28,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:28,641 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:28,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:29:28,642 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:28,642 INFO L82 PathProgramCache]: Analyzing trace with hash 207491829, now seen corresponding path program 1 times [2020-09-25 04:29:28,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:28,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243159777] [2020-09-25 04:29:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:28,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:28,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:33,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 04:29:33,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:29:33,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 04:29:33,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:33,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 04:29:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 04:29:33,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:33,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:33,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:33,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:33,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:29:33,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:33,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:33,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:29:33,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:33,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:33,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:33,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:33,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:29:33,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:33,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:33,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:33,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:33,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:33,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:29:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:33,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:33,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:33,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:29:33,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:33,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 04:29:33,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:33,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:33,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:29:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 04:29:34,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243159777] [2020-09-25 04:29:34,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:34,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:34,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346346269] [2020-09-25 04:29:34,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:34,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:34,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:34,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:34,036 INFO L87 Difference]: Start difference. First operand 2084 states and 2489 transitions. Second operand 5 states. [2020-09-25 04:29:36,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:36,026 INFO L93 Difference]: Finished difference Result 4884 states and 5996 transitions. [2020-09-25 04:29:36,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:36,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 04:29:36,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:36,041 INFO L225 Difference]: With dead ends: 4884 [2020-09-25 04:29:36,042 INFO L226 Difference]: Without dead ends: 2822 [2020-09-25 04:29:36,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 04:29:36,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2020-09-25 04:29:36,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2708. [2020-09-25 04:29:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2708 states. [2020-09-25 04:29:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3279 transitions. [2020-09-25 04:29:36,129 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3279 transitions. Word has length 189 [2020-09-25 04:29:36,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:36,130 INFO L479 AbstractCegarLoop]: Abstraction has 2708 states and 3279 transitions. [2020-09-25 04:29:36,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:36,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3279 transitions. [2020-09-25 04:29:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 04:29:36,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:36,141 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:29:36,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:29:36,141 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:36,141 INFO L82 PathProgramCache]: Analyzing trace with hash 924850542, now seen corresponding path program 1 times [2020-09-25 04:29:36,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:36,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136319121] [2020-09-25 04:29:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:36,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:36,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:36,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:38,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:38,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:40,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:41,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:41,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 04:29:41,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:29:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 04:29:41,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:41,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 04:29:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 04:29:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:41,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:41,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:41,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:41,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:41,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:41,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:29:41,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:41,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:41,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:41,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:41,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:41,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:41,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 04:29:41,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:41,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:29:41,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:41,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:41,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:29:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:41,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 04:29:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:41,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:41,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:29:41,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:41,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:29:41,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:41,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:41,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:41,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:41,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:29:41,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:41,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136319121] [2020-09-25 04:29:41,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:41,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:29:41,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409292430] [2020-09-25 04:29:41,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:29:41,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:41,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:29:41,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:29:41,534 INFO L87 Difference]: Start difference. First operand 2708 states and 3279 transitions. Second operand 8 states.