/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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:27:23,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:27:23,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:27:23,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:27:23,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:27:23,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:27:23,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:27:23,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:27:23,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:27:23,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:27:23,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:27:23,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:27:23,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:27:23,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:27:23,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:27:23,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:27:23,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:27:23,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:27:23,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:27:23,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:27:23,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:27:23,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:27:23,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:27:23,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:27:23,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:27:23,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:27:23,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:27:23,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:27:23,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:27:23,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:27:23,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:27:23,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:27:23,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:27:23,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:27:23,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:27:23,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:27:23,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:27:23,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:27:23,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:27:23,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:27:23,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:27:23,416 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 04:27:23,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:27:23,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:27:23,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:27:23,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:27:23,462 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:27:23,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:27:23,463 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:27:23,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:27:23,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:27:23,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:27:23,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:27:23,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:27:23,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:27:23,465 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:27:23,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:27:23,465 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:27:23,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:27:23,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:27:23,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:27:23,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:27:23,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:27:23,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:23,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:27:23,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:27:23,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:27:23,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:27:23,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:27:23,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:27:23,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:27:23,468 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 04:27:23,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:27:24,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:27:24,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:27:24,011 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:27:24,012 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:27:24,013 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-25 04:27:24,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b66eb1ea/81bc984af2ef4fca9c66bfc319a30f7d/FLAGe36f9eeac [2020-09-25 04:27:24,711 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:27:24,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-25 04:27:24,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b66eb1ea/81bc984af2ef4fca9c66bfc319a30f7d/FLAGe36f9eeac [2020-09-25 04:27:24,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b66eb1ea/81bc984af2ef4fca9c66bfc319a30f7d [2020-09-25 04:27:24,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:27:24,978 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:27:24,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:24,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:27:24,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:27:24,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:24" (1/1) ... [2020-09-25 04:27:24,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:24, skipping insertion in model container [2020-09-25 04:27:24,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:24" (1/1) ... [2020-09-25 04:27:24,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:27:25,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:27:25,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:25,578 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:27:25,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:25,816 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:27:25,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:25 WrapperNode [2020-09-25 04:27:25,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:25,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:27:25,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:27:25,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:27:25,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:25" (1/1) ... [2020-09-25 04:27:25,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:25" (1/1) ... [2020-09-25 04:27:25,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:25" (1/1) ... [2020-09-25 04:27:25,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:25" (1/1) ... [2020-09-25 04:27:25,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:25" (1/1) ... [2020-09-25 04:27:25,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:25" (1/1) ... [2020-09-25 04:27:25,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:25" (1/1) ... [2020-09-25 04:27:25,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:27:25,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:27:25,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:27:25,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:27:25,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:25" (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 04:27:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:27:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:27:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:27:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:27:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:27:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:27:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:27:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:27:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:27:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:27:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:27:27,401 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:27:27,402 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:27:27,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:27 BoogieIcfgContainer [2020-09-25 04:27:27,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:27:27,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:27:27,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:27:27,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:27:27,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:27:24" (1/3) ... [2020-09-25 04:27:27,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:27, skipping insertion in model container [2020-09-25 04:27:27,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:25" (2/3) ... [2020-09-25 04:27:27,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:27, skipping insertion in model container [2020-09-25 04:27:27,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:27" (3/3) ... [2020-09-25 04:27:27,421 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label25.c [2020-09-25 04:27:27,433 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:27:27,445 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:27:27,470 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:27:27,508 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:27:27,509 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:27:27,509 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:27:27,509 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:27:27,509 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:27:27,509 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:27:27,510 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:27:27,510 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:27:27,544 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:27:27,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 04:27:27,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:27,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:27,570 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:27,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1730766665, now seen corresponding path program 1 times [2020-09-25 04:27:27,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:27,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 04:27:27,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:28,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:32,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:32,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:32,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 04:27:32,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:27:32,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 04:27:32,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:32,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:32,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:32,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:27:32,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 04:27:32,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:27:33,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:33,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:33,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:33,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:33,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:33,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:27:33,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:33,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:27:33,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:33,250 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 04:27:33,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 04:27:33,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:33,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:27:33,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097909138] [2020-09-25 04:27:33,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:27:33,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:33,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:27:33,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:27:33,282 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:27:35,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:35,608 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 04:27:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:27:35,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 04:27:35,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:35,636 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 04:27:35,636 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 04:27:35,647 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 04:27:35,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 04:27:35,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 04:27:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 04:27:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 04:27:35,764 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 160 [2020-09-25 04:27:35,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:35,765 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 04:27:35,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:27:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 04:27:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 04:27:35,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:35,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:35,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:27:35,782 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:35,783 INFO L82 PathProgramCache]: Analyzing trace with hash -859680355, now seen corresponding path program 1 times [2020-09-25 04:27:35,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:35,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681366203] [2020-09-25 04:27:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:35,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:36,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:36,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:36,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:40,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:40,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 04:27:40,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:27:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 04:27:40,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:40,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:27:40,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:27:40,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 04:27:40,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:27:41,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:41,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:41,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:41,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:41,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:27:41,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:41,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:41,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:41,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:41,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 04:27:41,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:41,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:41,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:41,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:27:41,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:41,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:27:41,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:41,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:41,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:41,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:27:41,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:41,431 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 04:27:41,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681366203] [2020-09-25 04:27:41,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:41,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:27:41,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530256741] [2020-09-25 04:27:41,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:27:41,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:41,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:27:41,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:27:41,437 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 8 states. [2020-09-25 04:27:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:45,175 INFO L93 Difference]: Finished difference Result 2151 states and 2941 transitions. [2020-09-25 04:27:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:27:45,176 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 178 [2020-09-25 04:27:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:45,186 INFO L225 Difference]: With dead ends: 2151 [2020-09-25 04:27:45,186 INFO L226 Difference]: Without dead ends: 1306 [2020-09-25 04:27:45,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:27:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2020-09-25 04:27:45,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1265. [2020-09-25 04:27:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2020-09-25 04:27:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1513 transitions. [2020-09-25 04:27:45,277 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1513 transitions. Word has length 178 [2020-09-25 04:27:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:45,278 INFO L479 AbstractCegarLoop]: Abstraction has 1265 states and 1513 transitions. [2020-09-25 04:27:45,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:27:45,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1513 transitions. [2020-09-25 04:27:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 04:27:45,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:45,284 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:45,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:27:45,284 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:45,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:45,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1235361410, now seen corresponding path program 1 times [2020-09-25 04:27:45,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:45,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541694813] [2020-09-25 04:27:45,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:45,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:45,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:45,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:48,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:50,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:50,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 04:27:50,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:27:50,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 04:27:50,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:50,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:50,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:50,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:27:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:27:50,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:50,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:50,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:50,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:50,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:50,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:27:50,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:50,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:50,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 04:27:50,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:27:50,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:50,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:50,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:50,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:27:50,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:50,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:27:50,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:50,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:27:50,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:50,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541694813] [2020-09-25 04:27:50,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:50,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:27:50,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284791763] [2020-09-25 04:27:50,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:27:50,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:50,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:27:50,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:27:50,655 INFO L87 Difference]: Start difference. First operand 1265 states and 1513 transitions. Second operand 8 states. [2020-09-25 04:27:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:52,262 INFO L93 Difference]: Finished difference Result 2509 states and 3094 transitions. [2020-09-25 04:27:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:27:52,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2020-09-25 04:27:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:52,282 INFO L225 Difference]: With dead ends: 2509 [2020-09-25 04:27:52,282 INFO L226 Difference]: Without dead ends: 1266 [2020-09-25 04:27:52,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:27:52,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2020-09-25 04:27:52,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1174. [2020-09-25 04:27:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-09-25 04:27:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1393 transitions. [2020-09-25 04:27:52,391 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1393 transitions. Word has length 179 [2020-09-25 04:27:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:52,392 INFO L479 AbstractCegarLoop]: Abstraction has 1174 states and 1393 transitions. [2020-09-25 04:27:52,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:27:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1393 transitions. [2020-09-25 04:27:52,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:27:52,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:52,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:52,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:27:52,403 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:52,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:52,403 INFO L82 PathProgramCache]: Analyzing trace with hash -364325637, now seen corresponding path program 1 times [2020-09-25 04:27:52,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:52,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593500328] [2020-09-25 04:27:52,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:52,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:52,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:53,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:53,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:55,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:57,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 04:27:57,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:27:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:27:57,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:57,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:57,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:27:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 04:27:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 04:27:57,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:57,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:57,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:57,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:57,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:27:57,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:57,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:57,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:57,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:57,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:27:57,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:57,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 04:27:57,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:57,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:57,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:57,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:27:57,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:27:58,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:58,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593500328] [2020-09-25 04:27:58,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:58,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:27:58,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798497001] [2020-09-25 04:27:58,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:27:58,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:58,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:27:58,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:27:58,287 INFO L87 Difference]: Start difference. First operand 1174 states and 1393 transitions. Second operand 8 states. [2020-09-25 04:28:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:01,568 INFO L93 Difference]: Finished difference Result 3092 states and 3815 transitions. [2020-09-25 04:28:01,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:28:01,570 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 181 [2020-09-25 04:28:01,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:01,585 INFO L225 Difference]: With dead ends: 3092 [2020-09-25 04:28:01,585 INFO L226 Difference]: Without dead ends: 1840 [2020-09-25 04:28:01,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:28:01,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2020-09-25 04:28:01,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1782. [2020-09-25 04:28:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1782 states. [2020-09-25 04:28:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2080 transitions. [2020-09-25 04:28:01,673 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2080 transitions. Word has length 181 [2020-09-25 04:28:01,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:01,674 INFO L479 AbstractCegarLoop]: Abstraction has 1782 states and 2080 transitions. [2020-09-25 04:28:01,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:28:01,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2080 transitions. [2020-09-25 04:28:01,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 04:28:01,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:01,681 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:01,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:28:01,681 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:01,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:01,681 INFO L82 PathProgramCache]: Analyzing trace with hash 667978550, now seen corresponding path program 1 times [2020-09-25 04:28:01,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:01,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381591004] [2020-09-25 04:28:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:01,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:02,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:06,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:06,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 04:28:06,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:28:06,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:28:06,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:06,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:06,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:06,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 04:28:06,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:28:06,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:06,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:06,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:06,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:06,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:28:06,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:06,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:06,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:06,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:06,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:06,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:06,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:06,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:06,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:06,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:28:06,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:06,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:28:06,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:28:06,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:06,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381591004] [2020-09-25 04:28:06,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:06,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:28:06,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451638514] [2020-09-25 04:28:06,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:06,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:06,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:06,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:06,914 INFO L87 Difference]: Start difference. First operand 1782 states and 2080 transitions. Second operand 5 states. [2020-09-25 04:28:08,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:08,481 INFO L93 Difference]: Finished difference Result 4033 states and 4859 transitions. [2020-09-25 04:28:08,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:08,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 04:28:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:08,494 INFO L225 Difference]: With dead ends: 4033 [2020-09-25 04:28:08,495 INFO L226 Difference]: Without dead ends: 2273 [2020-09-25 04:28:08,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:08,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-09-25 04:28:08,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2237. [2020-09-25 04:28:08,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2237 states. [2020-09-25 04:28:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 2638 transitions. [2020-09-25 04:28:08,575 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 2638 transitions. Word has length 189 [2020-09-25 04:28:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:08,576 INFO L479 AbstractCegarLoop]: Abstraction has 2237 states and 2638 transitions. [2020-09-25 04:28:08,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 2638 transitions. [2020-09-25 04:28:08,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 04:28:08,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:08,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:08,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:08,586 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:08,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:08,586 INFO L82 PathProgramCache]: Analyzing trace with hash 387605117, now seen corresponding path program 1 times [2020-09-25 04:28:08,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:08,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768214839] [2020-09-25 04:28:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:08,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:08,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:08,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:09,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:09,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking...