/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:22,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:22,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:22,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:22,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:22,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:22,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:22,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:22,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:22,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:22,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:22,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:22,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:22,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:22,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:22,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:22,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:22,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:22,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:22,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:22,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:22,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:22,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:22,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:22,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:22,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:22,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:22,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:22,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:22,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:22,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:22,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:22,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:22,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:22,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:22,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:22,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:22,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:22,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:22,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:22,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:22,704 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 14:40:22,754 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:22,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:22,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:22,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:22,757 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:22,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:22,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:22,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:22,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:22,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:22,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:22,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:22,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:22,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:22,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:22,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:22,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:22,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:22,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:22,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:22,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:22,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:22,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:22,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:22,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:22,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:22,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:22,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:22,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:22,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:40:23,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:23,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:23,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:23,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:23,246 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:23,247 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 14:40:23,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46d9809bb/cf7e2db7dddf42bd94e61b59d2673993/FLAG3ba961c36 [2020-09-25 14:40:24,009 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:24,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 14:40:24,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46d9809bb/cf7e2db7dddf42bd94e61b59d2673993/FLAG3ba961c36 [2020-09-25 14:40:24,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46d9809bb/cf7e2db7dddf42bd94e61b59d2673993 [2020-09-25 14:40:24,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:24,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:24,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:24,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:24,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:24,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:24" (1/1) ... [2020-09-25 14:40:24,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe12ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:24, skipping insertion in model container [2020-09-25 14:40:24,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:24" (1/1) ... [2020-09-25 14:40:24,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:24,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:24,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:24,812 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:25,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:25,068 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:25,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:25 WrapperNode [2020-09-25 14:40:25,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:25,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:25,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:25,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:25,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:25" (1/1) ... [2020-09-25 14:40:25,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:25" (1/1) ... [2020-09-25 14:40:25,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:25" (1/1) ... [2020-09-25 14:40:25,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:25" (1/1) ... [2020-09-25 14:40:25,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:25" (1/1) ... [2020-09-25 14:40:25,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:25" (1/1) ... [2020-09-25 14:40:25,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:25" (1/1) ... [2020-09-25 14:40:25,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:25,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:25,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:25,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:25,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:25" (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 14:40:25,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:25,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:40:26,739 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:40:26,740 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:40:26,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:26 BoogieIcfgContainer [2020-09-25 14:40:26,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:40:26,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:40:26,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:40:26,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:40:26,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:24" (1/3) ... [2020-09-25 14:40:26,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:26, skipping insertion in model container [2020-09-25 14:40:26,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:25" (2/3) ... [2020-09-25 14:40:26,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:26, skipping insertion in model container [2020-09-25 14:40:26,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:26" (3/3) ... [2020-09-25 14:40:26,770 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label46.c [2020-09-25 14:40:26,783 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:40:26,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:40:26,830 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:40:26,879 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:40:26,880 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:40:26,880 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:40:26,881 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:40:26,881 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:40:26,881 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:40:26,881 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:40:26,881 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:40:26,924 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:40:26,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 14:40:26,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:26,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:26,948 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:26,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:26,957 INFO L82 PathProgramCache]: Analyzing trace with hash -87322735, now seen corresponding path program 1 times [2020-09-25 14:40:26,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:26,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66102414] [2020-09-25 14:40:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:27,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:27,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:28,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:28,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:29,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:32,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 14:40:32,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:40:32,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:40:32,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:32,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:40:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 14:40:32,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:40:32,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:32,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:32,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:32,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 14:40:32,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:32,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:32,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:40:32,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:32,595 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 14:40:32,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66102414] [2020-09-25 14:40:32,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:40:32,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:40:32,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127202216] [2020-09-25 14:40:32,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:32,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:32,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:32,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:32,631 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 14:40:35,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:35,290 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 14:40:35,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:40:35,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 14:40:35,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:35,346 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 14:40:35,347 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 14:40:35,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:40:35,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 14:40:35,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 14:40:35,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 14:40:35,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 14:40:35,491 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 138 [2020-09-25 14:40:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:35,493 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 14:40:35,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:35,494 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 14:40:35,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 14:40:35,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:35,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:35,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:40:35,507 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:35,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:35,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1674375397, now seen corresponding path program 1 times [2020-09-25 14:40:35,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:35,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225528601] [2020-09-25 14:40:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:35,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:35,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:35,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:36,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:36,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:38,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:40,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:40,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 14:40:40,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:40:40,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 14:40:40,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:40,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:40:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:40:40,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:40,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:40,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:40,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:40,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:40,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:40:40,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:40,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:40,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 14:40:40,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:40,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:40,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:40,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:40:40,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:40,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:40:40,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:40,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:40:40,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:41,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225528601] [2020-09-25 14:40:41,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:41,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:41,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849274094] [2020-09-25 14:40:41,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:41,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:41,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:41,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:41,086 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 14:40:43,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:43,543 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 14:40:43,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:43,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 14:40:43,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:43,553 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 14:40:43,554 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 14:40:43,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:40:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 14:40:43,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 14:40:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 14:40:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 14:40:43,604 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 156 [2020-09-25 14:40:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:43,605 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 14:40:43,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:43,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 14:40:43,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 14:40:43,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:43,610 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:43,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:40:43,611 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:43,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash -873577392, now seen corresponding path program 1 times [2020-09-25 14:40:43,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:43,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115079836] [2020-09-25 14:40:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:43,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:44,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:48,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:48,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 14:40:48,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:40:48,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:48,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:40:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 14:40:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:48,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:48,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:48,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:48,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:48,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:40:48,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:48,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:48,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:48,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:48,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:48,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:40:48,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:48,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:40:48,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:48,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:40:48,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:48,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115079836] [2020-09-25 14:40:48,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:48,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:48,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721950781] [2020-09-25 14:40:48,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:48,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:48,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:48,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:48,911 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 5 states. [2020-09-25 14:40:50,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:50,978 INFO L93 Difference]: Finished difference Result 2737 states and 3595 transitions. [2020-09-25 14:40:50,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:50,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-25 14:40:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:50,992 INFO L225 Difference]: With dead ends: 2737 [2020-09-25 14:40:50,992 INFO L226 Difference]: Without dead ends: 1704 [2020-09-25 14:40:50,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:40:51,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-09-25 14:40:51,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1664. [2020-09-25 14:40:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-09-25 14:40:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2048 transitions. [2020-09-25 14:40:51,062 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2048 transitions. Word has length 162 [2020-09-25 14:40:51,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:51,063 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2048 transitions. [2020-09-25 14:40:51,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:51,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2048 transitions. [2020-09-25 14:40:51,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 14:40:51,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:51,073 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:51,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:40:51,073 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:51,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:51,074 INFO L82 PathProgramCache]: Analyzing trace with hash 581282987, now seen corresponding path program 1 times [2020-09-25 14:40:51,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:51,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439384497] [2020-09-25 14:40:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:51,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:51,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:54,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:54,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:54,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:55,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:56,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 14:40:56,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:56,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:40:56,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:56,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:40:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 14:40:56,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 14:40:56,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:56,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:56,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:56,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:56,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:56,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:40:56,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:56,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:56,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:56,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:56,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:56,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:56,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:56,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:56,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:40:56,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:56,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 14:40:56,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:56,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:40:56,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:56,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:40:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:56,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:56,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 14:40:56,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:40:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 14:40:56,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:56,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:40:56,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:40:56,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:40:56,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439384497] [2020-09-25 14:40:56,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:56,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:40:56,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669625588] [2020-09-25 14:40:56,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:40:56,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:56,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:40:56,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:40:56,818 INFO L87 Difference]: Start difference. First operand 1664 states and 2048 transitions. Second operand 10 states. [2020-09-25 14:41:03,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:03,563 INFO L93 Difference]: Finished difference Result 5725 states and 7834 transitions. [2020-09-25 14:41:03,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 14:41:03,563 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-09-25 14:41:03,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:03,587 INFO L225 Difference]: With dead ends: 5725 [2020-09-25 14:41:03,588 INFO L226 Difference]: Without dead ends: 3825 [2020-09-25 14:41:03,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2020-09-25 14:41:03,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3825 states. [2020-09-25 14:41:03,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3825 to 3649. [2020-09-25 14:41:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3649 states. [2020-09-25 14:41:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 4379 transitions. [2020-09-25 14:41:03,754 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 4379 transitions. Word has length 176 [2020-09-25 14:41:03,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:03,755 INFO L479 AbstractCegarLoop]: Abstraction has 3649 states and 4379 transitions. [2020-09-25 14:41:03,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:41:03,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 4379 transitions. [2020-09-25 14:41:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 14:41:03,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:03,770 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:03,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:03,771 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:03,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:03,772 INFO L82 PathProgramCache]: Analyzing trace with hash -334401655, now seen corresponding path program 1 times [2020-09-25 14:41:03,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:03,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079619042] [2020-09-25 14:41:03,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:03,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:03,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:03,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:07,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:08,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 14:41:08,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:08,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:41:08,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:08,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:41:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:41:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 14:41:08,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:08,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:08,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:08,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:08,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:08,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:41:08,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:08,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:08,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:41:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:09,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:09,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:41:09,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:09,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 14:41:09,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:09,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:41:09,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:41:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:09,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:09,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 14:41:09,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 14:41:09,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:09,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:41:09,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:41:09,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079619042] [2020-09-25 14:41:09,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:09,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:41:09,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731725195] [2020-09-25 14:41:09,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:41:09,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:09,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:41:09,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:41:09,374 INFO L87 Difference]: Start difference. First operand 3649 states and 4379 transitions. Second operand 10 states.