/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=0.6 --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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:47:02,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:47:02,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:47:02,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:47:02,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:47:02,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:47:02,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:47:02,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:47:02,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:47:02,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:47:02,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:47:02,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:47:02,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:47:02,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:47:02,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:47:02,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:47:02,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:47:02,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:47:02,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:47:02,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:47:02,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:47:02,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:47:02,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:47:02,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:47:02,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:47:02,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:47:02,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:47:02,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:47:02,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:47:02,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:47:02,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:47:02,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:47:02,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:47:02,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:47:02,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:47:02,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:47:02,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:47:02,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:47:02,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:47:02,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:47:02,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:47:02,763 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 06:47:02,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:47:02,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:47:02,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:47:02,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:47:02,817 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:47:02,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:47:02,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:47:02,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:47:02,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:47:02,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:47:02,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:47:02,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:47:02,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:47:02,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:47:02,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:47:02,820 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:47:02,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:47:02,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:47:02,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:47:02,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:47:02,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:47:02,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:02,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:47:02,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:47:02,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:47:02,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:47:02,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:47:02,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:47:02,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:47:02,823 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:47:03,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:47:03,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:47:03,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:47:03,291 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:47:03,291 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:47:03,292 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 06:47:03,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5c5ef408/189b614446cd493eaa4ab64595fdf04f/FLAG1ee2460e9 [2020-09-25 06:47:04,035 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:47:04,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 06:47:04,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5c5ef408/189b614446cd493eaa4ab64595fdf04f/FLAG1ee2460e9 [2020-09-25 06:47:04,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5c5ef408/189b614446cd493eaa4ab64595fdf04f [2020-09-25 06:47:04,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:47:04,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:47:04,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:04,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:47:04,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:47:04,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:04" (1/1) ... [2020-09-25 06:47:04,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47211fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:04, skipping insertion in model container [2020-09-25 06:47:04,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:04" (1/1) ... [2020-09-25 06:47:04,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:47:04,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:47:04,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:04,830 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:47:05,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:05,105 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:47:05,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05 WrapperNode [2020-09-25 06:47:05,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:05,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:47:05,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:47:05,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:47:05,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:47:05,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:47:05,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:47:05,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:47:05,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (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 06:47:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:47:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:47:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:47:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:47:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:47:05,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:47:05,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:47:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:47:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:47:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:47:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:47:06,741 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:47:06,742 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:47:06,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:06 BoogieIcfgContainer [2020-09-25 06:47:06,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:47:06,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:47:06,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:47:06,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:47:06,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:47:04" (1/3) ... [2020-09-25 06:47:06,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4381e4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:06, skipping insertion in model container [2020-09-25 06:47:06,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (2/3) ... [2020-09-25 06:47:06,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4381e4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:06, skipping insertion in model container [2020-09-25 06:47:06,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:06" (3/3) ... [2020-09-25 06:47:06,766 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-09-25 06:47:06,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:47:06,792 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:47:06,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:47:06,872 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:47:06,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:47:06,873 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:47:06,873 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:47:06,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:47:06,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:47:06,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:47:06,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:47:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:47:06,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 06:47:06,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:06,945 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] [2020-09-25 06:47:06,946 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:06,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times [2020-09-25 06:47:06,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:06,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895732269] [2020-09-25 06:47:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:07,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:07,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:08,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:47:08,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:08,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1655 [2020-09-25 06:47:08,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:08,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:47:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:47:09,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:09,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:09,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:09,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:09,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:47:09,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:09,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:09,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:09,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:09,097 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 06:47:09,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895732269] [2020-09-25 06:47:09,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:09,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:47:09,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155038598] [2020-09-25 06:47:09,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:47:09,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:09,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:47:09,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:47:09,131 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:47:11,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:11,054 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 06:47:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:47:11,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-09-25 06:47:11,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:11,094 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 06:47:11,094 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 06:47:11,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:11,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 06:47:11,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 06:47:11,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 06:47:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 06:47:11,194 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 80 [2020-09-25 06:47:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:11,195 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 06:47:11,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:47:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 06:47:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 06:47:11,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:11,206 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, 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] [2020-09-25 06:47:11,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:47:11,207 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:11,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:11,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times [2020-09-25 06:47:11,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:11,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327236941] [2020-09-25 06:47:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:11,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:11,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:11,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:15,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:15,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 06:47:15,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:47:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4338 [2020-09-25 06:47:15,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:15,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:47:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:15,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:15,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:15,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:15,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:15,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:15,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:47:15,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:15,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:47:15,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:15,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:15,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:15,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:15,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:15,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 06:47:15,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:15,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:47:15,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:16,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327236941] [2020-09-25 06:47:16,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:16,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:47:16,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149153048] [2020-09-25 06:47:16,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:47:16,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:16,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:47:16,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:16,020 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 06:47:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:17,838 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 06:47:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:47:17,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 06:47:17,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:17,846 INFO L225 Difference]: With dead ends: 698 [2020-09-25 06:47:17,847 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 06:47:17,848 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 06:47:17,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 06:47:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 06:47:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 06:47:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 06:47:17,882 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 159 [2020-09-25 06:47:17,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:17,883 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 06:47:17,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:47:17,884 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 06:47:17,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 06:47:17,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:17,890 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, 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] [2020-09-25 06:47:17,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:47:17,890 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:17,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:17,891 INFO L82 PathProgramCache]: Analyzing trace with hash -663007827, now seen corresponding path program 1 times [2020-09-25 06:47:17,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:17,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654067062] [2020-09-25 06:47:17,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:17,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:22,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 06:47:22,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:47:22,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:47:22,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:22,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:22,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:22,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:47:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:47:22,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:23,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:23,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:23,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:23,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:23,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:23,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:47:23,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:23,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:23,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:23,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:23,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:23,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:23,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:23,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:23,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:23,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:23,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 06:47:23,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:23,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:47:23,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:23,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654067062] [2020-09-25 06:47:23,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:23,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:47:23,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300546659] [2020-09-25 06:47:23,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:47:23,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:23,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:47:23,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:23,325 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 6 states. [2020-09-25 06:47:26,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:26,382 INFO L93 Difference]: Finished difference Result 1906 states and 2592 transitions. [2020-09-25 06:47:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:47:26,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-25 06:47:26,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:26,397 INFO L225 Difference]: With dead ends: 1906 [2020-09-25 06:47:26,397 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 06:47:26,400 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 06:47:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 06:47:26,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1168. [2020-09-25 06:47:26,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-09-25 06:47:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1566 transitions. [2020-09-25 06:47:26,469 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1566 transitions. Word has length 169 [2020-09-25 06:47:26,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:26,471 INFO L479 AbstractCegarLoop]: Abstraction has 1168 states and 1566 transitions. [2020-09-25 06:47:26,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:47:26,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1566 transitions. [2020-09-25 06:47:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 06:47:26,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:26,486 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, 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] [2020-09-25 06:47:26,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:47:26,486 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:26,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:26,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1325292486, now seen corresponding path program 1 times [2020-09-25 06:47:26,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:26,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317397429] [2020-09-25 06:47:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:26,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:26,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:27,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:29,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:31,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:31,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:31,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 06:47:31,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:31,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 06:47:31,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:31,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:31,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:47:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 06:47:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:31,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:31,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:31,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:31,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:47:31,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:31,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:47:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:31,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:31,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:31,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:31,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 06:47:31,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:31,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 06:47:31,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:31,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:31,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:31,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 06:47:31,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:32,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317397429] [2020-09-25 06:47:32,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:32,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:32,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961049444] [2020-09-25 06:47:32,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:32,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:32,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:32,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:32,245 INFO L87 Difference]: Start difference. First operand 1168 states and 1566 transitions. Second operand 7 states. [2020-09-25 06:47:34,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:34,677 INFO L93 Difference]: Finished difference Result 2984 states and 4374 transitions. [2020-09-25 06:47:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:34,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-09-25 06:47:34,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:34,701 INFO L225 Difference]: With dead ends: 2984 [2020-09-25 06:47:34,702 INFO L226 Difference]: Without dead ends: 1831 [2020-09-25 06:47:34,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2020-09-25 06:47:34,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1487. [2020-09-25 06:47:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1487 states. [2020-09-25 06:47:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 1969 transitions. [2020-09-25 06:47:34,801 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 1969 transitions. Word has length 216 [2020-09-25 06:47:34,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:34,802 INFO L479 AbstractCegarLoop]: Abstraction has 1487 states and 1969 transitions. [2020-09-25 06:47:34,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:34,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 1969 transitions. [2020-09-25 06:47:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 06:47:34,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:34,808 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, 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 06:47:34,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:47:34,809 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:34,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:34,809 INFO L82 PathProgramCache]: Analyzing trace with hash -333534806, now seen corresponding path program 1 times [2020-09-25 06:47:34,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:34,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774072526] [2020-09-25 06:47:34,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:34,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:35,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:35,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:39,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:39,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 06:47:39,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:47:39,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:47:39,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:39,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:47:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 06:47:39,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:39,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:39,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:39,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:39,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:39,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:47:39,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:39,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:47:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:40,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:40,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:40,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:40,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 06:47:40,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-25 06:47:40,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:40,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 06:47:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:40,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774072526] [2020-09-25 06:47:40,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:40,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:47:40,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592657250] [2020-09-25 06:47:40,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:40,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:40,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:40,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:40,567 INFO L87 Difference]: Start difference. First operand 1487 states and 1969 transitions. Second operand 8 states. [2020-09-25 06:47:43,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:43,545 INFO L93 Difference]: Finished difference Result 4545 states and 6414 transitions. [2020-09-25 06:47:43,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:47:43,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-09-25 06:47:43,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:43,563 INFO L225 Difference]: With dead ends: 4545 [2020-09-25 06:47:43,563 INFO L226 Difference]: Without dead ends: 3223 [2020-09-25 06:47:43,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:47:43,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2020-09-25 06:47:43,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 2739. [2020-09-25 06:47:43,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2739 states. [2020-09-25 06:47:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3559 transitions. [2020-09-25 06:47:43,664 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3559 transitions. Word has length 226 [2020-09-25 06:47:43,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:43,665 INFO L479 AbstractCegarLoop]: Abstraction has 2739 states and 3559 transitions. [2020-09-25 06:47:43,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:43,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3559 transitions. [2020-09-25 06:47:43,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-09-25 06:47:43,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:43,678 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:43,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:43,678 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:43,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:43,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1816762361, now seen corresponding path program 1 times [2020-09-25 06:47:43,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:43,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38404606] [2020-09-25 06:47:43,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:43,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:43,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:48,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:48,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-09-25 06:47:48,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:48,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:47:48,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:48,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:47:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 06:47:48,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 06:47:48,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:48,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:48,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:48,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:48,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:48,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:48,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:48,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:48,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:49,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:49,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:49,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:49,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 06:47:49,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:49,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:49,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:47:49,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:49,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:49,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 06:47:49,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:49,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-25 06:47:49,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:49,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:49,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:49,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 06:47:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:49,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38404606] [2020-09-25 06:47:49,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:49,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:49,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417517740] [2020-09-25 06:47:49,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:49,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:49,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:49,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:49,637 INFO L87 Difference]: Start difference. First operand 2739 states and 3559 transitions. Second operand 7 states.