/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/Problem10_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:09,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:09,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:09,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:09,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:09,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:09,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:09,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:09,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:09,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:09,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:09,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:09,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:09,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:09,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:09,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:09,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:09,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:09,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:09,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:09,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:09,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:09,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:09,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:09,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:09,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:09,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:09,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:09,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:09,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:09,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:09,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:09,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:09,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:09,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:09,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:09,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:09,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:09,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:09,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:09,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:09,808 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 05:39:09,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:09,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:09,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:09,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:09,859 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:09,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:09,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:09,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:09,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:09,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:09,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:09,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:09,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:09,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:09,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:09,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:09,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:09,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:09,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:09,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:09,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:09,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:09,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:09,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:09,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:09,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:09,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:09,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:09,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:09,865 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 05:39:10,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:10,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:10,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:10,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:10,324 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:10,325 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 05:39:10,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b15217f74/a98fb82136ac4f819d31041e81596453/FLAG89675bc11 [2020-09-25 05:39:11,109 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:11,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 05:39:11,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b15217f74/a98fb82136ac4f819d31041e81596453/FLAG89675bc11 [2020-09-25 05:39:11,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b15217f74/a98fb82136ac4f819d31041e81596453 [2020-09-25 05:39:11,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:11,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:11,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:11,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:11,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:11,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:11" (1/1) ... [2020-09-25 05:39:11,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:11, skipping insertion in model container [2020-09-25 05:39:11,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:11" (1/1) ... [2020-09-25 05:39:11,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:11,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:11,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:11,978 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:12,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:12,134 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:12,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:12 WrapperNode [2020-09-25 05:39:12,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:12,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:12,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:12,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:12,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:12" (1/1) ... [2020-09-25 05:39:12,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:12" (1/1) ... [2020-09-25 05:39:12,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:12" (1/1) ... [2020-09-25 05:39:12,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:12" (1/1) ... [2020-09-25 05:39:12,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:12" (1/1) ... [2020-09-25 05:39:12,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:12" (1/1) ... [2020-09-25 05:39:12,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:12" (1/1) ... [2020-09-25 05:39:12,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:12,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:12,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:12,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:12,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:12" (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 05:39:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:13,843 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:13,844 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:13,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:13 BoogieIcfgContainer [2020-09-25 05:39:13,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:13,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:13,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:13,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:13,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:11" (1/3) ... [2020-09-25 05:39:13,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:13, skipping insertion in model container [2020-09-25 05:39:13,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:12" (2/3) ... [2020-09-25 05:39:13,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:13, skipping insertion in model container [2020-09-25 05:39:13,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:13" (3/3) ... [2020-09-25 05:39:13,873 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label39.c [2020-09-25 05:39:13,884 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:13,899 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:13,922 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:13,960 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:13,961 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:13,961 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:13,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:13,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:13,962 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:13,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:13,962 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:39:14,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 05:39:14,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:14,015 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] [2020-09-25 05:39:14,015 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:14,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:14,022 INFO L82 PathProgramCache]: Analyzing trace with hash 381272735, now seen corresponding path program 1 times [2020-09-25 05:39:14,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:14,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791069953] [2020-09-25 05:39:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:14,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:14,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:14,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:39:14,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:39:15,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 796 [2020-09-25 05:39:15,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:15,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:15,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:39:15,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:39:15,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:39:15,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:15,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:15,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:15,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:15,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 05:39:15,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:15,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:39:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:15,240 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 05:39:15,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791069953] [2020-09-25 05:39:15,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:15,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:39:15,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720333830] [2020-09-25 05:39:15,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:39:15,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:15,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:39:15,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:39:15,273 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:39:17,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:17,523 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 05:39:17,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:39:17,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-25 05:39:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:17,553 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 05:39:17,554 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 05:39:17,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:17,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 05:39:17,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 05:39:17,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 05:39:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 05:39:17,660 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 45 [2020-09-25 05:39:17,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:17,661 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 05:39:17,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:39:17,661 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 05:39:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 05:39:17,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:17,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:17,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:17,669 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:17,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:17,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2073113520, now seen corresponding path program 1 times [2020-09-25 05:39:17,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:17,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480730170] [2020-09-25 05:39:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:17,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:17,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:22,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:22,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 05:39:22,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4626 [2020-09-25 05:39:22,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:22,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:39:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:39:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:22,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:22,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:22,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:22,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:22,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:22,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:39:22,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:22,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:22,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:22,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:22,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:22,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:22,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:22,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:39:22,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:22,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 05:39:22,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:22,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:22,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:39:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:22,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480730170] [2020-09-25 05:39:22,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:22,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:22,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666598078] [2020-09-25 05:39:22,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:22,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:22,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:22,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:22,663 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 05:39:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:24,212 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 05:39:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:24,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-09-25 05:39:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:24,218 INFO L225 Difference]: With dead ends: 698 [2020-09-25 05:39:24,219 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 05:39:24,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 05:39:24,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 05:39:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 05:39:24,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 05:39:24,263 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 124 [2020-09-25 05:39:24,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:24,264 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 05:39:24,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 05:39:24,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 05:39:24,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:24,271 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:24,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:39:24,271 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:24,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1595126062, now seen corresponding path program 1 times [2020-09-25 05:39:24,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:24,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682722323] [2020-09-25 05:39:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:24,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:24,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:28,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 05:39:28,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:39:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4368 [2020-09-25 05:39:28,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:28,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:39:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:39:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:28,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:28,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:28,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:28,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:39:28,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:28,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:28,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:28,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:28,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:28,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:28,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:28,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 05:39:28,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:28,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:39:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:29,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682722323] [2020-09-25 05:39:29,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:29,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:39:29,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869920067] [2020-09-25 05:39:29,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:39:29,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:29,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:39:29,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:29,034 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 6 states. [2020-09-25 05:39:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:31,875 INFO L93 Difference]: Finished difference Result 1906 states and 2592 transitions. [2020-09-25 05:39:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:31,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-09-25 05:39:31,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:31,887 INFO L225 Difference]: With dead ends: 1906 [2020-09-25 05:39:31,888 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 05:39:31,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:31,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 05:39:31,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1168. [2020-09-25 05:39:31,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-09-25 05:39:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1566 transitions. [2020-09-25 05:39:31,973 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1566 transitions. Word has length 134 [2020-09-25 05:39:31,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:31,974 INFO L479 AbstractCegarLoop]: Abstraction has 1168 states and 1566 transitions. [2020-09-25 05:39:31,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1566 transitions. [2020-09-25 05:39:31,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 05:39:31,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:31,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:31,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:39:31,981 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:31,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:31,981 INFO L82 PathProgramCache]: Analyzing trace with hash 961850231, now seen corresponding path program 1 times [2020-09-25 05:39:31,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:31,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67848041] [2020-09-25 05:39:31,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:32,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:32,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:33,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:37,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 05:39:37,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:39:37,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:37,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:39:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 05:39:37,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:37,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:37,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:37,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:37,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:37,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:39:37,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:37,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:39:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:37,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:37,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 05:39:37,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:37,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 05:39:37,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:37,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 05:39:37,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:37,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67848041] [2020-09-25 05:39:37,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:37,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:39:37,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456892994] [2020-09-25 05:39:37,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:39:37,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:37,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:39:37,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:37,493 INFO L87 Difference]: Start difference. First operand 1168 states and 1566 transitions. Second operand 7 states. [2020-09-25 05:39:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:39,666 INFO L93 Difference]: Finished difference Result 2822 states and 3938 transitions. [2020-09-25 05:39:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:39:39,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 05:39:39,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:39,680 INFO L225 Difference]: With dead ends: 2822 [2020-09-25 05:39:39,681 INFO L226 Difference]: Without dead ends: 1669 [2020-09-25 05:39:39,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:39:39,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2020-09-25 05:39:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1485. [2020-09-25 05:39:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-09-25 05:39:39,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1966 transitions. [2020-09-25 05:39:39,752 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1966 transitions. Word has length 181 [2020-09-25 05:39:39,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:39,753 INFO L479 AbstractCegarLoop]: Abstraction has 1485 states and 1966 transitions. [2020-09-25 05:39:39,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:39:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1966 transitions. [2020-09-25 05:39:39,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 05:39:39,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:39,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:39,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:39:39,761 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:39,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:39,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1117469357, now seen corresponding path program 1 times [2020-09-25 05:39:39,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:39,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021856275] [2020-09-25 05:39:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:39,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:42,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:44,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:44,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 05:39:44,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:44,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 05:39:44,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:44,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:44,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:44,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 05:39:44,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 05:39:44,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:44,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:44,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:44,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:44,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:44,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:39:44,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:44,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:44,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:44,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:45,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:45,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 05:39:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 05:39:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:45,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 05:39:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:45,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021856275] [2020-09-25 05:39:45,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:45,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:39:45,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235548215] [2020-09-25 05:39:45,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:39:45,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:45,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:39:45,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:45,238 INFO L87 Difference]: Start difference. First operand 1485 states and 1966 transitions. Second operand 6 states. [2020-09-25 05:39:47,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:47,888 INFO L93 Difference]: Finished difference Result 4505 states and 6342 transitions. [2020-09-25 05:39:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:47,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2020-09-25 05:39:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:47,912 INFO L225 Difference]: With dead ends: 4505 [2020-09-25 05:39:47,912 INFO L226 Difference]: Without dead ends: 3185 [2020-09-25 05:39:47,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:47,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2020-09-25 05:39:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 3015. [2020-09-25 05:39:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3015 states. [2020-09-25 05:39:48,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 4085 transitions. [2020-09-25 05:39:48,024 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 4085 transitions. Word has length 191 [2020-09-25 05:39:48,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:48,025 INFO L479 AbstractCegarLoop]: Abstraction has 3015 states and 4085 transitions. [2020-09-25 05:39:48,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:48,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 4085 transitions. [2020-09-25 05:39:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-25 05:39:48,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:48,038 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:39:48,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:39:48,038 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:48,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:48,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1449495778, now seen corresponding path program 1 times [2020-09-25 05:39:48,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:48,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591259924] [2020-09-25 05:39:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:52,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:53,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-09-25 05:39:53,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:53,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 05:39:53,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:53,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 05:39:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 05:39:53,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:53,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:53,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:53,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:53,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:53,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:53,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:53,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:53,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:53,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:39:53,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:53,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 05:39:53,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:53,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:39:53,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:53,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 05:39:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:53,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:53,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 05:39:53,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:53,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 05:39:53,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:53,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:53,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:53,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:53,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 05:39:53,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:53,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591259924] [2020-09-25 05:39:53,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:53,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:39:53,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654923298] [2020-09-25 05:39:53,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:39:53,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:53,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:39:53,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:53,849 INFO L87 Difference]: Start difference. First operand 3015 states and 4085 transitions. Second operand 8 states. [2020-09-25 05:39:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:57,495 INFO L93 Difference]: Finished difference Result 7746 states and 11670 transitions. [2020-09-25 05:39:57,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:39:57,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 272 [2020-09-25 05:39:57,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:57,527 INFO L225 Difference]: With dead ends: 7746 [2020-09-25 05:39:57,527 INFO L226 Difference]: Without dead ends: 4896 [2020-09-25 05:39:57,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:39:57,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2020-09-25 05:39:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 3968. [2020-09-25 05:39:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3968 states. [2020-09-25 05:39:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5443 transitions. [2020-09-25 05:39:57,694 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5443 transitions. Word has length 272 [2020-09-25 05:39:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:57,695 INFO L479 AbstractCegarLoop]: Abstraction has 3968 states and 5443 transitions. [2020-09-25 05:39:57,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:39:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5443 transitions. [2020-09-25 05:39:57,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-25 05:39:57,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:57,713 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:57,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:39:57,714 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:57,714 INFO L82 PathProgramCache]: Analyzing trace with hash -640615194, now seen corresponding path program 1 times [2020-09-25 05:39:57,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:57,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818845907] [2020-09-25 05:39:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking...