/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:33:16,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:33:16,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:33:16,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:33:16,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:33:16,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:33:16,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:33:16,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:33:16,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:33:16,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:33:16,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:33:16,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:33:16,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:33:16,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:33:16,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:33:16,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:33:16,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:33:16,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:33:16,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:33:16,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:33:16,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:33:16,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:33:16,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:33:16,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:33:16,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:33:16,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:33:16,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:33:16,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:33:16,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:33:16,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:33:16,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:33:16,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:33:16,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:33:16,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:33:16,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:33:16,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:33:16,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:33:16,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:33:16,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:33:16,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:33:16,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:33:16,800 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 05:33:16,842 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:33:16,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:33:16,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:33:16,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:33:16,848 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:33:16,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:33:16,848 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:33:16,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:33:16,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:33:16,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:33:16,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:33:16,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:33:16,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:33:16,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:33:16,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:33:16,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:33:16,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:33:16,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:33:16,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:33:16,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:33:16,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:33:16,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:33:16,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:33:16,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:33:16,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:33:16,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:33:16,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:33:16,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:33:16,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:33:16,854 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:33:17,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:33:17,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:33:17,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:33:17,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:33:17,316 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:33:17,318 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 05:33:17,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb05a607f/38e026bcd56a4ab2aa985c7edfdeb4ec/FLAGaa7d731b6 [2020-09-25 05:33:18,066 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:33:18,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 05:33:18,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb05a607f/38e026bcd56a4ab2aa985c7edfdeb4ec/FLAGaa7d731b6 [2020-09-25 05:33:18,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb05a607f/38e026bcd56a4ab2aa985c7edfdeb4ec [2020-09-25 05:33:18,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:33:18,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:33:18,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:18,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:33:18,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:33:18,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:18" (1/1) ... [2020-09-25 05:33:18,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473f737c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:18, skipping insertion in model container [2020-09-25 05:33:18,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:18" (1/1) ... [2020-09-25 05:33:18,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:33:18,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:33:18,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:18,878 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:33:19,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:19,131 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:33:19,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:19 WrapperNode [2020-09-25 05:33:19,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:19,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:33:19,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:33:19,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:33:19,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:19" (1/1) ... [2020-09-25 05:33:19,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:19" (1/1) ... [2020-09-25 05:33:19,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:19" (1/1) ... [2020-09-25 05:33:19,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:19" (1/1) ... [2020-09-25 05:33:19,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:19" (1/1) ... [2020-09-25 05:33:19,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:19" (1/1) ... [2020-09-25 05:33:19,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:19" (1/1) ... [2020-09-25 05:33:19,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:33:19,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:33:19,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:33:19,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:33:19,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:19" (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 05:33:19,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:33:19,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:33:19,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:33:19,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:33:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:33:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:33:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:33:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:33:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:33:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:33:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:33:20,796 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:33:20,797 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:33:20,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:20 BoogieIcfgContainer [2020-09-25 05:33:20,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:33:20,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:33:20,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:33:20,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:33:20,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:33:18" (1/3) ... [2020-09-25 05:33:20,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635782e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:20, skipping insertion in model container [2020-09-25 05:33:20,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:19" (2/3) ... [2020-09-25 05:33:20,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635782e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:20, skipping insertion in model container [2020-09-25 05:33:20,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:20" (3/3) ... [2020-09-25 05:33:20,828 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-25 05:33:20,840 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:33:20,865 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:33:20,885 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:33:20,915 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:33:20,916 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:33:20,916 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:33:20,916 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:33:20,916 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:33:20,916 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:33:20,916 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:33:20,917 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:33:20,950 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:33:20,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 05:33:20,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:20,980 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] [2020-09-25 05:33:20,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:20,987 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-25 05:33:20,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:20,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562941894] [2020-09-25 05:33:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:21,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:22,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:23,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:23,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:24,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:26,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:26,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 05:33:26,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:33:26,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 05:33:26,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:26,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:26,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:33:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 05:33:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:33:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:26,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:26,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:26,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:26,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:33:26,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:26,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:33:26,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:26,777 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 05:33:26,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562941894] [2020-09-25 05:33:26,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:26,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:33:26,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776515448] [2020-09-25 05:33:26,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:33:26,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:26,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:33:26,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:33:26,813 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:33:28,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:28,979 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 05:33:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:33:28,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-25 05:33:28,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:29,009 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 05:33:29,010 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 05:33:29,021 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 05:33:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 05:33:29,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 05:33:29,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:33:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 05:33:29,124 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 141 [2020-09-25 05:33:29,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:29,125 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 05:33:29,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:33:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 05:33:29,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 05:33:29,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:29,136 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:33:29,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:33:29,136 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:29,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:29,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1572128645, now seen corresponding path program 1 times [2020-09-25 05:33:29,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:29,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707887089] [2020-09-25 05:33:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:29,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:29,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:29,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:34,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:34,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:34,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 05:33:34,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:33:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 05:33:34,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:34,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:33:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:33:34,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:34,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:34,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:34,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:34,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:33:34,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:34,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:33:34,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 05:33:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:34,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:34,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:34,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:34,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:34,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 05:33:34,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:34,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:33:34,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:34,639 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:34,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707887089] [2020-09-25 05:33:34,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:34,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:33:34,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502416740] [2020-09-25 05:33:34,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:33:34,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:34,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:33:34,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:33:34,647 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 05:33:37,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:37,180 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 05:33:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:33:37,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 05:33:37,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:37,196 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 05:33:37,197 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 05:33:37,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:33:37,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 05:33:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 05:33:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 05:33:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1108 transitions. [2020-09-25 05:33:37,258 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1108 transitions. Word has length 162 [2020-09-25 05:33:37,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:37,259 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1108 transitions. [2020-09-25 05:33:37,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:33:37,259 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1108 transitions. [2020-09-25 05:33:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 05:33:37,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:37,265 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:33:37,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:33:37,266 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:37,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:37,266 INFO L82 PathProgramCache]: Analyzing trace with hash 127836767, now seen corresponding path program 1 times [2020-09-25 05:33:37,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:37,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235555828] [2020-09-25 05:33:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:37,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:37,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:39,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:41,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:42,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:42,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 05:33:42,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:42,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:33:42,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:42,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:33:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:33:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:33:42,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:42,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:42,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:42,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:42,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:33:42,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:42,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:42,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:42,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:42,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:33:42,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:42,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:42,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:42,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:42,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:33:42,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:42,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:33:42,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:42,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:42,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:33:42,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:42,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235555828] [2020-09-25 05:33:42,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:42,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:33:42,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904239763] [2020-09-25 05:33:42,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:33:42,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:42,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:33:42,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:33:42,717 INFO L87 Difference]: Start difference. First operand 901 states and 1108 transitions. Second operand 8 states. [2020-09-25 05:33:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:45,927 INFO L93 Difference]: Finished difference Result 2983 states and 3934 transitions. [2020-09-25 05:33:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:33:45,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-09-25 05:33:45,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:45,949 INFO L225 Difference]: With dead ends: 2983 [2020-09-25 05:33:45,950 INFO L226 Difference]: Without dead ends: 2106 [2020-09-25 05:33:45,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:33:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-09-25 05:33:46,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1983. [2020-09-25 05:33:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1983 states. [2020-09-25 05:33:46,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 2511 transitions. [2020-09-25 05:33:46,076 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 2511 transitions. Word has length 163 [2020-09-25 05:33:46,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:46,077 INFO L479 AbstractCegarLoop]: Abstraction has 1983 states and 2511 transitions. [2020-09-25 05:33:46,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:33:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 2511 transitions. [2020-09-25 05:33:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 05:33:46,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:46,091 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:46,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:33:46,094 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:46,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:46,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1373458601, now seen corresponding path program 1 times [2020-09-25 05:33:46,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:46,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788427515] [2020-09-25 05:33:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:47,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:47,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:50,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 05:33:51,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 05:33:51,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:33:51,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:33:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:51,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:51,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:51,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:33:51,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:51,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:51,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:51,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:51,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:51,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:33:51,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:33:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:33:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:51,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:51,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:51,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 05:33:51,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:33:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:51,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788427515] [2020-09-25 05:33:51,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:51,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:33:51,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078162904] [2020-09-25 05:33:51,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:33:51,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:51,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:33:51,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:33:51,511 INFO L87 Difference]: Start difference. First operand 1983 states and 2511 transitions. Second operand 7 states. [2020-09-25 05:33:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:53,761 INFO L93 Difference]: Finished difference Result 4382 states and 5707 transitions. [2020-09-25 05:33:53,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:33:53,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 05:33:53,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:53,784 INFO L225 Difference]: With dead ends: 4382 [2020-09-25 05:33:53,784 INFO L226 Difference]: Without dead ends: 2423 [2020-09-25 05:33:53,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:33:53,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2020-09-25 05:33:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2165. [2020-09-25 05:33:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2165 states. [2020-09-25 05:33:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 2697 transitions. [2020-09-25 05:33:53,889 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 2697 transitions. Word has length 193 [2020-09-25 05:33:53,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:53,892 INFO L479 AbstractCegarLoop]: Abstraction has 2165 states and 2697 transitions. [2020-09-25 05:33:53,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:33:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 2697 transitions. [2020-09-25 05:33:53,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 05:33:53,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:53,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:53,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:33:53,904 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:53,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:53,905 INFO L82 PathProgramCache]: Analyzing trace with hash 82298840, now seen corresponding path program 1 times [2020-09-25 05:33:53,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:53,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833518903] [2020-09-25 05:33:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:54,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:55,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:57,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:57,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:58,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:58,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 05:33:58,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 05:33:58,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 05:33:58,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:58,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 05:33:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 05:33:58,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:59,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:59,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:59,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:59,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:59,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:33:59,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:59,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:59,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:59,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:33:59,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:59,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:33:59,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:59,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:59,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:59,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:33:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:59,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:59,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:59,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 05:33:59,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:59,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:59,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:33:59,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 05:33:59,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833518903] [2020-09-25 05:33:59,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:59,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:33:59,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686587609] [2020-09-25 05:33:59,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:33:59,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:59,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:33:59,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:59,289 INFO L87 Difference]: Start difference. First operand 2165 states and 2697 transitions. Second operand 5 states. [2020-09-25 05:34:01,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:01,150 INFO L93 Difference]: Finished difference Result 5650 states and 7214 transitions. [2020-09-25 05:34:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:01,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-09-25 05:34:01,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:01,170 INFO L225 Difference]: With dead ends: 5650 [2020-09-25 05:34:01,170 INFO L226 Difference]: Without dead ends: 3509 [2020-09-25 05:34:01,179 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 05:34:01,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2020-09-25 05:34:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 3313. [2020-09-25 05:34:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3313 states. [2020-09-25 05:34:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 4113 transitions. [2020-09-25 05:34:01,288 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 4113 transitions. Word has length 200 [2020-09-25 05:34:01,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:01,289 INFO L479 AbstractCegarLoop]: Abstraction has 3313 states and 4113 transitions. [2020-09-25 05:34:01,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:01,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 4113 transitions. [2020-09-25 05:34:01,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 05:34:01,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:01,305 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:01,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:01,305 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:01,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:01,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1184211931, now seen corresponding path program 1 times [2020-09-25 05:34:01,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:01,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393050318] [2020-09-25 05:34:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:01,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:01,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:02,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:02,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:02,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:06,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:06,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 05:34:06,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:06,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 05:34:06,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:06,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:34:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 05:34:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 05:34:06,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0