/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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:20,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:20,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:20,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:20,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:20,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:20,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:20,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:20,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:20,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:20,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:20,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:20,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:20,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:20,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:20,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:20,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:20,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:20,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:20,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:20,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:20,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:20,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:20,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:20,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:20,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:20,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:20,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:20,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:20,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:20,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:20,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:20,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:20,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:20,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:20,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:20,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:20,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:20,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:20,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:20,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:20,826 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 05:39:20,885 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:20,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:20,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:20,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:20,890 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:20,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:20,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:20,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:20,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:20,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:20,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:20,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:20,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:20,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:20,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:20,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:20,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:20,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:20,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:20,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:20,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:20,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:20,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:20,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:20,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:20,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:20,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:20,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:20,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:20,897 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 05:39:21,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:21,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:21,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:21,422 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:21,424 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:21,425 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 05:39:21,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9361c7b8a/e02ff4f8f42c4a659f8ada8b694d1404/FLAGbac2d42a7 [2020-09-25 05:39:22,180 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:22,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 05:39:22,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9361c7b8a/e02ff4f8f42c4a659f8ada8b694d1404/FLAGbac2d42a7 [2020-09-25 05:39:22,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9361c7b8a/e02ff4f8f42c4a659f8ada8b694d1404 [2020-09-25 05:39:22,416 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:22,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:22,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:22,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:22,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:22,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:22" (1/1) ... [2020-09-25 05:39:22,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@843e52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:22, skipping insertion in model container [2020-09-25 05:39:22,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:22" (1/1) ... [2020-09-25 05:39:22,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:22,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:22,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:22,996 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:23,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:23,307 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:23,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:23 WrapperNode [2020-09-25 05:39:23,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:23,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:23,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:23,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:23,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:23" (1/1) ... [2020-09-25 05:39:23,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:23" (1/1) ... [2020-09-25 05:39:23,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:23" (1/1) ... [2020-09-25 05:39:23,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:23" (1/1) ... [2020-09-25 05:39:23,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:23" (1/1) ... [2020-09-25 05:39:23,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:23" (1/1) ... [2020-09-25 05:39:23,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:23" (1/1) ... [2020-09-25 05:39:23,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:23,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:23,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:23,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:23,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:23" (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 05:39:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:23,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:23,526 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:23,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:23,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:25,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:25,090 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:25,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:25 BoogieIcfgContainer [2020-09-25 05:39:25,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:25,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:25,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:25,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:25,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:22" (1/3) ... [2020-09-25 05:39:25,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1facb096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:25, skipping insertion in model container [2020-09-25 05:39:25,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:23" (2/3) ... [2020-09-25 05:39:25,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1facb096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:25, skipping insertion in model container [2020-09-25 05:39:25,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:25" (3/3) ... [2020-09-25 05:39:25,109 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-25 05:39:25,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:25,132 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:25,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:25,191 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:25,191 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:25,191 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:25,191 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:25,192 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:25,192 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:25,192 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:25,192 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:39:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 05:39:25,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:25,235 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] [2020-09-25 05:39:25,235 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:25,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:25,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-25 05:39:25,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:25,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886307538] [2020-09-25 05:39:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:25,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:26,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:26,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:39:26,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 951 [2020-09-25 05:39:26,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:26,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:26,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:39:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 05:39:26,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:39:26,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:26,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:26,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:26,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:26,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:39:26,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:26,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:26,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:26,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:39:26,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:26,610 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 05:39:26,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886307538] [2020-09-25 05:39:26,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:26,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:39:26,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202847944] [2020-09-25 05:39:26,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:39:26,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:26,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:39:26,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:39:26,645 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:39:28,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:28,851 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 05:39:28,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:39:28,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-25 05:39:28,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:28,878 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 05:39:28,878 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 05:39:28,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:28,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 05:39:28,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 05:39:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 05:39:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 05:39:29,001 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-25 05:39:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:29,002 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 05:39:29,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:39:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 05:39:29,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 05:39:29,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:29,012 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, 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] [2020-09-25 05:39:29,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:29,013 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:29,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-25 05:39:29,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:29,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127117823] [2020-09-25 05:39:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:29,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:29,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:29,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:29,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:31,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 05:39:31,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:31,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2398 [2020-09-25 05:39:31,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:31,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 05:39:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 05:39:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:31,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:31,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:31,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:31,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:39:31,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:31,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:31,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:31,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:31,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:31,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:39:31,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:31,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 05:39:31,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 05:39:31,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:31,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:31,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:39:31,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:31,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127117823] [2020-09-25 05:39:31,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:31,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:31,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482513511] [2020-09-25 05:39:31,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:31,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:31,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:31,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:31,889 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-25 05:39:34,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:34,107 INFO L93 Difference]: Finished difference Result 1419 states and 1830 transitions. [2020-09-25 05:39:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:34,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 05:39:34,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:34,115 INFO L225 Difference]: With dead ends: 1419 [2020-09-25 05:39:34,115 INFO L226 Difference]: Without dead ends: 891 [2020-09-25 05:39:34,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 05:39:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-09-25 05:39:34,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 850. [2020-09-25 05:39:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-09-25 05:39:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1047 transitions. [2020-09-25 05:39:34,186 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1047 transitions. Word has length 156 [2020-09-25 05:39:34,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:34,187 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 1047 transitions. [2020-09-25 05:39:34,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1047 transitions. [2020-09-25 05:39:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 05:39:34,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:34,199 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, 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] [2020-09-25 05:39:34,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:39:34,200 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:34,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:34,200 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-25 05:39:34,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:34,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708404331] [2020-09-25 05:39:34,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:34,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:34,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:34,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:39,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:39,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 05:39:39,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:39,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:39:39,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:39,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:39,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:39,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:39:39,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 05:39:39,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:39,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:39,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:39,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:39,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:39,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:39,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:39,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:39,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:39,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:39,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:39,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:39,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:39,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 05:39:39,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:39,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:39:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:39,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708404331] [2020-09-25 05:39:39,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:39,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:39:39,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241030619] [2020-09-25 05:39:39,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:39:39,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:39,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:39:39,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:39,580 INFO L87 Difference]: Start difference. First operand 850 states and 1047 transitions. Second operand 6 states. [2020-09-25 05:39:42,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:42,530 INFO L93 Difference]: Finished difference Result 2692 states and 3487 transitions. [2020-09-25 05:39:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:42,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-25 05:39:42,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:42,545 INFO L225 Difference]: With dead ends: 2692 [2020-09-25 05:39:42,545 INFO L226 Difference]: Without dead ends: 1857 [2020-09-25 05:39:42,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:42,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-09-25 05:39:42,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1780. [2020-09-25 05:39:42,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1780 states. [2020-09-25 05:39:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2286 transitions. [2020-09-25 05:39:42,636 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2286 transitions. Word has length 165 [2020-09-25 05:39:42,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:42,638 INFO L479 AbstractCegarLoop]: Abstraction has 1780 states and 2286 transitions. [2020-09-25 05:39:42,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:42,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2286 transitions. [2020-09-25 05:39:42,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 05:39:42,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:42,646 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, 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] [2020-09-25 05:39:42,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:39:42,647 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:42,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:42,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1256012571, now seen corresponding path program 1 times [2020-09-25 05:39:42,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:42,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142543350] [2020-09-25 05:39:42,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:43,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:46,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:46,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 05:39:46,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:46,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3637 [2020-09-25 05:39:46,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:46,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:46,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:46,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 05:39:46,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 05:39:46,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:46,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:46,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:46,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:46,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:46,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:46,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:46,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:46,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:46,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:46,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:46,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:46,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:39:46,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:46,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 05:39:46,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:46,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:39:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:46,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142543350] [2020-09-25 05:39:46,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:46,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:39:46,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638447300] [2020-09-25 05:39:46,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:39:46,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:46,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:39:46,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:46,673 INFO L87 Difference]: Start difference. First operand 1780 states and 2286 transitions. Second operand 6 states. [2020-09-25 05:39:49,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:49,800 INFO L93 Difference]: Finished difference Result 4368 states and 5812 transitions. [2020-09-25 05:39:49,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:49,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-09-25 05:39:49,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:49,819 INFO L225 Difference]: With dead ends: 4368 [2020-09-25 05:39:49,819 INFO L226 Difference]: Without dead ends: 2603 [2020-09-25 05:39:49,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:49,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2020-09-25 05:39:49,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2543. [2020-09-25 05:39:49,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-09-25 05:39:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3296 transitions. [2020-09-25 05:39:49,937 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3296 transitions. Word has length 167 [2020-09-25 05:39:49,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:49,937 INFO L479 AbstractCegarLoop]: Abstraction has 2543 states and 3296 transitions. [2020-09-25 05:39:49,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3296 transitions. [2020-09-25 05:39:49,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 05:39:49,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:49,944 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, 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] [2020-09-25 05:39:49,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:39:49,945 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:49,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:49,945 INFO L82 PathProgramCache]: Analyzing trace with hash -446945425, now seen corresponding path program 1 times [2020-09-25 05:39:49,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:49,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401788678] [2020-09-25 05:39:49,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:50,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:50,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:51,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:54,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 05:39:54,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:39:54,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 05:39:54,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:54,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-09-25 05:39:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 05:39:54,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:55,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:55,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:55,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:55,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:55,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:55,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:55,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:55,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:55,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:55,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:39:55,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:55,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 05:39:55,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:55,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:55,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:55,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:55,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 05:39:55,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:55,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401788678] [2020-09-25 05:39:55,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:55,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:55,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132538587] [2020-09-25 05:39:55,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:55,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:55,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:55,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:55,288 INFO L87 Difference]: Start difference. First operand 2543 states and 3296 transitions. Second operand 5 states. [2020-09-25 05:39:57,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:57,591 INFO L93 Difference]: Finished difference Result 6068 states and 7972 transitions. [2020-09-25 05:39:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:57,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-09-25 05:39:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:57,612 INFO L225 Difference]: With dead ends: 6068 [2020-09-25 05:39:57,612 INFO L226 Difference]: Without dead ends: 3540 [2020-09-25 05:39:57,621 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 05:39:57,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2020-09-25 05:39:57,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 3496. [2020-09-25 05:39:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3496 states. [2020-09-25 05:39:57,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 4582 transitions. [2020-09-25 05:39:57,736 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 4582 transitions. Word has length 184 [2020-09-25 05:39:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:57,737 INFO L479 AbstractCegarLoop]: Abstraction has 3496 states and 4582 transitions. [2020-09-25 05:39:57,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:57,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 4582 transitions. [2020-09-25 05:39:57,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 05:39:57,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:57,743 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, 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] [2020-09-25 05:39:57,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:39:57,743 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:57,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:57,743 INFO L82 PathProgramCache]: Analyzing trace with hash 447209024, now seen corresponding path program 1 times [2020-09-25 05:39:57,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:57,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475785017] [2020-09-25 05:39:57,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:02,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:02,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 05:40:02,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:40:02,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:40:02,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:02,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:02,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:02,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 05:40:02,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 05:40:02,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:02,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:02,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:02,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:02,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:02,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:02,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:40:02,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:02,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:02,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:40:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:02,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:03,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 05:40:03,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:03,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 05:40:03,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:03,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 05:40:03,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:03,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475785017] [2020-09-25 05:40:03,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:03,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:03,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189928382] [2020-09-25 05:40:03,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:03,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:03,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:03,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:03,172 INFO L87 Difference]: Start difference. First operand 3496 states and 4582 transitions. Second operand 5 states. [2020-09-25 05:40:05,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:05,483 INFO L93 Difference]: Finished difference Result 7977 states and 10567 transitions. [2020-09-25 05:40:05,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:05,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-09-25 05:40:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:05,509 INFO L225 Difference]: With dead ends: 7977 [2020-09-25 05:40:05,510 INFO L226 Difference]: Without dead ends: 4496 [2020-09-25 05:40:05,522 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 05:40:05,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2020-09-25 05:40:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4454. [2020-09-25 05:40:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4454 states. [2020-09-25 05:40:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 5891 transitions. [2020-09-25 05:40:05,664 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 5891 transitions. Word has length 203 [2020-09-25 05:40:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:05,665 INFO L479 AbstractCegarLoop]: Abstraction has 4454 states and 5891 transitions. [2020-09-25 05:40:05,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:05,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 5891 transitions. [2020-09-25 05:40:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 05:40:05,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:05,671 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, 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] [2020-09-25 05:40:05,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:40:05,672 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:05,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:05,672 INFO L82 PathProgramCache]: Analyzing trace with hash 927751976, now seen corresponding path program 1 times [2020-09-25 05:40:05,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:05,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648904728] [2020-09-25 05:40:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:05,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking...