/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:16:49,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:16:49,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:16:49,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:16:49,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:16:49,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:16:49,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:16:49,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:16:49,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:16:49,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:16:49,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:16:49,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:16:49,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:16:49,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:16:49,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:16:49,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:16:49,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:16:49,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:16:49,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:16:49,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:16:49,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:16:49,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:16:49,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:16:49,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:16:49,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:16:49,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:16:49,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:16:49,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:16:49,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:16:49,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:16:49,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:16:49,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:16:49,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:16:49,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:16:49,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:16:49,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:16:49,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:16:49,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:16:49,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:16:49,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:16:49,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:16:49,924 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 11:16:49,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:16:49,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:16:49,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:16:49,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:16:49,976 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:16:49,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:16:49,977 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:16:49,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:16:49,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:16:49,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:16:49,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:16:49,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:16:49,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:16:49,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:16:49,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:16:49,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:16:49,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:16:49,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:16:49,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:16:49,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:16:49,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:16:49,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:16:49,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:16:49,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:16:49,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:16:49,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:16:49,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:16:49,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:16:49,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:16:49,983 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:16:50,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:16:50,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:16:50,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:16:50,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:16:50,493 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:16:50,494 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label35.c [2020-09-25 11:16:50,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413b521ae/292e41e07bd447df9026de753f15dbdc/FLAGa8fc6464b [2020-09-25 11:16:51,249 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:16:51,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label35.c [2020-09-25 11:16:51,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413b521ae/292e41e07bd447df9026de753f15dbdc/FLAGa8fc6464b [2020-09-25 11:16:51,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413b521ae/292e41e07bd447df9026de753f15dbdc [2020-09-25 11:16:51,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:16:51,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:16:51,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:51,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:16:51,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:16:51,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:51" (1/1) ... [2020-09-25 11:16:51,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4231a4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:51, skipping insertion in model container [2020-09-25 11:16:51,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:51" (1/1) ... [2020-09-25 11:16:51,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:16:51,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:16:52,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:52,126 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:16:52,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:52,394 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:16:52,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52 WrapperNode [2020-09-25 11:16:52,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:52,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:16:52,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:16:52,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:16:52,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:16:52,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:16:52,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:16:52,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:16:52,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (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 11:16:52,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:16:52,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:16:52,590 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:16:52,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:16:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:16:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:16:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:16:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:16:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:16:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:16:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:16:53,992 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:16:53,993 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:16:54,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:54 BoogieIcfgContainer [2020-09-25 11:16:54,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:16:54,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:16:54,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:16:54,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:16:54,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:16:51" (1/3) ... [2020-09-25 11:16:54,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aece562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:54, skipping insertion in model container [2020-09-25 11:16:54,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (2/3) ... [2020-09-25 11:16:54,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aece562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:54, skipping insertion in model container [2020-09-25 11:16:54,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:54" (3/3) ... [2020-09-25 11:16:54,022 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label35.c [2020-09-25 11:16:54,034 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:16:54,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:16:54,076 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:16:54,108 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:16:54,108 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:16:54,108 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:16:54,108 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:16:54,109 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:16:54,109 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:16:54,109 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:16:54,109 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:16:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:16:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 11:16:54,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:54,162 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] [2020-09-25 11:16:54,162 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:54,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:54,169 INFO L82 PathProgramCache]: Analyzing trace with hash -691491799, now seen corresponding path program 1 times [2020-09-25 11:16:54,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:54,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786869251] [2020-09-25 11:16:54,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:54,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:54,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:54,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:59,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:59,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:59,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 11:16:59,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:16:59,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:16:59,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:59,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:16:59,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 11:16:59,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:16:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:59,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:59,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:59,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:59,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:16:59,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:59,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:16:59,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:59,801 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 11:16:59,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786869251] [2020-09-25 11:16:59,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:16:59,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:16:59,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054992819] [2020-09-25 11:16:59,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:16:59,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:59,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:16:59,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:16:59,839 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:17:02,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:02,160 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 11:17:02,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:17:02,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-09-25 11:17:02,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:02,210 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 11:17:02,210 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 11:17:02,224 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 11:17:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 11:17:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 11:17:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 11:17:02,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 11:17:02,355 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 120 [2020-09-25 11:17:02,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:02,356 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 11:17:02,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:17:02,356 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 11:17:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 11:17:02,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:02,367 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:02,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:17:02,367 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:02,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:02,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1514480100, now seen corresponding path program 1 times [2020-09-25 11:17:02,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:02,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770056672] [2020-09-25 11:17:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:03,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:06,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:06,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 11:17:06,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:17:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4116 [2020-09-25 11:17:06,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:06,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:06,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:06,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 11:17:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 11:17:06,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 11:17:06,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:06,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:06,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:06,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:06,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:06,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:17:06,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:06,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:06,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:06,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:06,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:06,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:06,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:17:06,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:06,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 11:17:06,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:06,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:06,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:06,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:06,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:17:06,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:06,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770056672] [2020-09-25 11:17:06,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:06,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:06,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727531188] [2020-09-25 11:17:06,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:06,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:06,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:06,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:06,828 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 11:17:08,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:08,585 INFO L93 Difference]: Finished difference Result 1670 states and 2100 transitions. [2020-09-25 11:17:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:17:08,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 11:17:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:08,592 INFO L225 Difference]: With dead ends: 1670 [2020-09-25 11:17:08,592 INFO L226 Difference]: Without dead ends: 1077 [2020-09-25 11:17:08,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 11:17:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-09-25 11:17:08,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 961. [2020-09-25 11:17:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-09-25 11:17:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1210 transitions. [2020-09-25 11:17:08,646 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1210 transitions. Word has length 154 [2020-09-25 11:17:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:08,646 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1210 transitions. [2020-09-25 11:17:08,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1210 transitions. [2020-09-25 11:17:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 11:17:08,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:08,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:17:08,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:17:08,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:08,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:08,655 INFO L82 PathProgramCache]: Analyzing trace with hash 531796658, now seen corresponding path program 1 times [2020-09-25 11:17:08,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:08,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28779775] [2020-09-25 11:17:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:09,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:10,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:12,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:12,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:12,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:13,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:13,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 11:17:13,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:17:13,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 11:17:13,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:13,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:13,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 11:17:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:17:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 11:17:13,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:14,335 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-09-25 11:17:14,466 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-09-25 11:17:14,631 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 31 [2020-09-25 11:17:14,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:14,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:14,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:14,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:14,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:14,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 11:17:14,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:14,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:17:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:14,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:17:14,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:14,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:14,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:14,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:15,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:15,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 11:17:15,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:15,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 11:17:15,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:15,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:15,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 11:17:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:15,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28779775] [2020-09-25 11:17:15,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:15,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:17:15,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345942193] [2020-09-25 11:17:15,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:17:15,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:15,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:17:15,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:17:15,325 INFO L87 Difference]: Start difference. First operand 961 states and 1210 transitions. Second operand 16 states. [2020-09-25 11:17:20,264 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-09-25 11:17:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:20,759 INFO L93 Difference]: Finished difference Result 3361 states and 4510 transitions. [2020-09-25 11:17:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:17:20,760 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 164 [2020-09-25 11:17:20,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:20,778 INFO L225 Difference]: With dead ends: 3361 [2020-09-25 11:17:20,779 INFO L226 Difference]: Without dead ends: 2422 [2020-09-25 11:17:20,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2020-09-25 11:17:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2020-09-25 11:17:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 2019. [2020-09-25 11:17:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-09-25 11:17:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 2566 transitions. [2020-09-25 11:17:20,882 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 2566 transitions. Word has length 164 [2020-09-25 11:17:20,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:20,882 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 2566 transitions. [2020-09-25 11:17:20,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 11:17:20,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 2566 transitions. [2020-09-25 11:17:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 11:17:20,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:20,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:20,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:17:20,901 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:20,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:20,901 INFO L82 PathProgramCache]: Analyzing trace with hash -2050522244, now seen corresponding path program 1 times [2020-09-25 11:17:20,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:20,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065613690] [2020-09-25 11:17:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:20,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:21,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:21,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:21,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:23,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:23,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:25,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:25,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:25,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:25,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:25,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 11:17:25,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:17:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 11:17:25,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:25,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 11:17:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 11:17:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:26,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:26,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:26,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:26,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:17:26,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:26,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:26,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:26,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:26,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:26,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:17:26,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:26,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:17:26,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:26,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 11:17:26,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:26,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:17:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:26,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:26,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:26,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:17:26,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:26,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 11:17:26,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:26,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:26,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:26,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:26,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:17:26,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:17:26,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065613690] [2020-09-25 11:17:26,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:26,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:17:26,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344831024] [2020-09-25 11:17:26,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:17:26,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:26,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:17:26,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:17:26,348 INFO L87 Difference]: Start difference. First operand 2019 states and 2566 transitions. Second operand 7 states. [2020-09-25 11:17:28,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:28,900 INFO L93 Difference]: Finished difference Result 5240 states and 6883 transitions. [2020-09-25 11:17:28,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:17:28,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 11:17:28,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:28,926 INFO L225 Difference]: With dead ends: 5240 [2020-09-25 11:17:28,926 INFO L226 Difference]: Without dead ends: 3243 [2020-09-25 11:17:28,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:17:28,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2020-09-25 11:17:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 2628. [2020-09-25 11:17:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2628 states. [2020-09-25 11:17:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3407 transitions. [2020-09-25 11:17:29,036 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 3407 transitions. Word has length 176 [2020-09-25 11:17:29,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:29,037 INFO L479 AbstractCegarLoop]: Abstraction has 2628 states and 3407 transitions. [2020-09-25 11:17:29,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:17:29,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 3407 transitions. [2020-09-25 11:17:29,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 11:17:29,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:29,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:29,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:17:29,052 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:29,053 INFO L82 PathProgramCache]: Analyzing trace with hash -360311521, now seen corresponding path program 1 times [2020-09-25 11:17:29,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:29,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667856613] [2020-09-25 11:17:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:29,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:29,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:30,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:31,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:34,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:34,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 11:17:34,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:17:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 11:17:34,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:34,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 11:17:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 11:17:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:34,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:34,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:34,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:34,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:17:34,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:34,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:34,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:34,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:34,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:34,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:34,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:17:34,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:17:34,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:34,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:17:34,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:34,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 11:17:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:34,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:34,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:34,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:34,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:17:34,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:34,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 11:17:34,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:34,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 11:17:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 56 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:17:34,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667856613] [2020-09-25 11:17:34,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:34,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:17:34,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356832755] [2020-09-25 11:17:34,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:17:34,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:34,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:17:34,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:17:34,526 INFO L87 Difference]: Start difference. First operand 2628 states and 3407 transitions. Second operand 7 states. [2020-09-25 11:17:37,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:37,042 INFO L93 Difference]: Finished difference Result 6689 states and 8852 transitions. [2020-09-25 11:17:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:17:37,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-09-25 11:17:37,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:37,066 INFO L225 Difference]: With dead ends: 6689 [2020-09-25 11:17:37,066 INFO L226 Difference]: Without dead ends: 4083 [2020-09-25 11:17:37,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 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 11:17:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2020-09-25 11:17:37,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 3876. [2020-09-25 11:17:37,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3876 states. [2020-09-25 11:17:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 4819 transitions. [2020-09-25 11:17:37,203 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 4819 transitions. Word has length 198 [2020-09-25 11:17:37,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:37,203 INFO L479 AbstractCegarLoop]: Abstraction has 3876 states and 4819 transitions. [2020-09-25 11:17:37,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:17:37,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 4819 transitions. [2020-09-25 11:17:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 11:17:37,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:37,218 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:17:37,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:17:37,219 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:37,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1688230851, now seen corresponding path program 1 times [2020-09-25 11:17:37,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:37,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938653238] [2020-09-25 11:17:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:37,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking...