/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:31:13,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:31:13,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:31:13,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:31:13,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:31:13,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:31:13,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:31:13,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:31:13,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:31:13,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:31:13,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:31:13,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:31:13,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:31:13,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:31:13,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:31:13,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:31:13,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:31:13,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:31:13,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:31:13,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:31:13,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:31:13,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:31:13,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:31:13,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:31:13,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:31:13,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:31:13,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:31:13,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:31:13,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:31:13,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:31:13,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:31:13,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:31:13,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:31:13,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:31:13,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:31:13,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:31:13,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:31:13,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:31:13,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:31:13,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:31:13,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:31:13,746 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 04:31:13,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:31:13,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:31:13,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:31:13,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:31:13,791 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:31:13,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:31:13,792 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:31:13,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:31:13,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:31:13,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:31:13,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:31:13,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:31:13,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:31:13,794 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:31:13,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:31:13,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:31:13,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:31:13,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:31:13,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:31:13,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:31:13,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:31:13,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:13,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:31:13,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:31:13,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:31:13,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:31:13,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:31:13,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:31:13,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:31:13,799 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=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:31:14,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:14,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:14,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:14,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:14,279 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:14,280 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 04:31:14,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1eaef715a/f11d261f39d54e4e9d35285520c8a907/FLAG15b1747e6 [2020-09-25 04:31:15,008 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:15,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 04:31:15,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1eaef715a/f11d261f39d54e4e9d35285520c8a907/FLAG15b1747e6 [2020-09-25 04:31:15,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1eaef715a/f11d261f39d54e4e9d35285520c8a907 [2020-09-25 04:31:15,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:15,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:15,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:15,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:15,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:15,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:15" (1/1) ... [2020-09-25 04:31:15,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:15, skipping insertion in model container [2020-09-25 04:31:15,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:15" (1/1) ... [2020-09-25 04:31:15,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:15,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:16,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:16,043 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:16,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:16,446 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:16,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16 WrapperNode [2020-09-25 04:31:16,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:16,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:16,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:16,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:16,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:16,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:16,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:16,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:16,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (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 04:31:16,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:16,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:16,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:16,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:16,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:19,118 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:19,118 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:19,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:19 BoogieIcfgContainer [2020-09-25 04:31:19,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:19,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:19,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:19,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:19,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:15" (1/3) ... [2020-09-25 04:31:19,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a6c7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:19, skipping insertion in model container [2020-09-25 04:31:19,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (2/3) ... [2020-09-25 04:31:19,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a6c7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:19, skipping insertion in model container [2020-09-25 04:31:19,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:19" (3/3) ... [2020-09-25 04:31:19,142 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label36.c [2020-09-25 04:31:19,158 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:19,171 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:19,199 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:19,242 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:19,242 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:19,243 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:19,243 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:19,243 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:19,243 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:19,243 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:19,244 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 04:31:19,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 04:31:19,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:19,297 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] [2020-09-25 04:31:19,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:19,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:19,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1149620956, now seen corresponding path program 1 times [2020-09-25 04:31:19,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:19,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194793909] [2020-09-25 04:31:19,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:19,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:19,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 04:31:20,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:31:20,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-09-25 04:31:20,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:20,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:31:20,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:31:20,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:31:20,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:20,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:20,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:31:20,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:31:20,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:20,563 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 04:31:20,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194793909] [2020-09-25 04:31:20,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:20,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:31:20,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987067362] [2020-09-25 04:31:20,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:20,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:20,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:20,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:20,595 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 04:31:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:25,366 INFO L93 Difference]: Finished difference Result 2231 states and 3021 transitions. [2020-09-25 04:31:25,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:31:25,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-25 04:31:25,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:25,401 INFO L225 Difference]: With dead ends: 2231 [2020-09-25 04:31:25,401 INFO L226 Difference]: Without dead ends: 1325 [2020-09-25 04:31:25,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-09-25 04:31:25,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 997. [2020-09-25 04:31:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 04:31:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1185 transitions. [2020-09-25 04:31:25,544 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1185 transitions. Word has length 34 [2020-09-25 04:31:25,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:25,545 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1185 transitions. [2020-09-25 04:31:25,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:25,546 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1185 transitions. [2020-09-25 04:31:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 04:31:25,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:25,552 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:31:25,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:25,553 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:25,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:25,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1328266352, now seen corresponding path program 1 times [2020-09-25 04:31:25,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:25,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443333795] [2020-09-25 04:31:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:25,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:26,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:26,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:28,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 04:31:28,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:31:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2867 [2020-09-25 04:31:28,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:28,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 04:31:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:31:28,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:28,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:28,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:28,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:28,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:28,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:28,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:28,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:28,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:31:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:28,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:28,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:31:28,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 04:31:28,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:28,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:31:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:28,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443333795] [2020-09-25 04:31:28,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:28,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:28,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025468532] [2020-09-25 04:31:28,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:28,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:28,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:28,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:28,790 INFO L87 Difference]: Start difference. First operand 997 states and 1185 transitions. Second operand 5 states. [2020-09-25 04:31:32,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:32,159 INFO L93 Difference]: Finished difference Result 2020 states and 2477 transitions. [2020-09-25 04:31:32,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:32,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-09-25 04:31:32,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:32,171 INFO L225 Difference]: With dead ends: 2020 [2020-09-25 04:31:32,171 INFO L226 Difference]: Without dead ends: 1286 [2020-09-25 04:31:32,174 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 04:31:32,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2020-09-25 04:31:32,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1243. [2020-09-25 04:31:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-09-25 04:31:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1537 transitions. [2020-09-25 04:31:32,210 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1537 transitions. Word has length 116 [2020-09-25 04:31:32,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:32,211 INFO L479 AbstractCegarLoop]: Abstraction has 1243 states and 1537 transitions. [2020-09-25 04:31:32,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:32,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1537 transitions. [2020-09-25 04:31:32,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 04:31:32,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:32,214 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:31:32,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:32,215 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:32,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:32,215 INFO L82 PathProgramCache]: Analyzing trace with hash 641101782, now seen corresponding path program 1 times [2020-09-25 04:31:32,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:32,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909856437] [2020-09-25 04:31:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:32,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:35,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:37,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:37,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 04:31:37,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 04:31:37,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:37,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:37,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 04:31:37,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 04:31:37,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:37,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:37,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:37,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:37,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:37,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:37,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:37,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:37,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:37,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:37,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:31:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:37,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:37,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:37,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:31:37,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:37,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 04:31:37,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:37,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:37,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 04:31:37,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:37,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909856437] [2020-09-25 04:31:37,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:37,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:31:37,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348610158] [2020-09-25 04:31:37,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:31:37,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:37,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:31:37,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:37,615 INFO L87 Difference]: Start difference. First operand 1243 states and 1537 transitions. Second operand 6 states. [2020-09-25 04:31:42,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:42,724 INFO L93 Difference]: Finished difference Result 4029 states and 5245 transitions. [2020-09-25 04:31:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:31:42,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-09-25 04:31:42,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:42,740 INFO L225 Difference]: With dead ends: 4029 [2020-09-25 04:31:42,740 INFO L226 Difference]: Without dead ends: 2803 [2020-09-25 04:31:42,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 04:31:42,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2020-09-25 04:31:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2236. [2020-09-25 04:31:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2236 states. [2020-09-25 04:31:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2899 transitions. [2020-09-25 04:31:42,813 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2899 transitions. Word has length 118 [2020-09-25 04:31:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:42,814 INFO L479 AbstractCegarLoop]: Abstraction has 2236 states and 2899 transitions. [2020-09-25 04:31:42,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:31:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2899 transitions. [2020-09-25 04:31:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 04:31:42,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:42,829 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:42,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:42,830 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:42,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:42,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1390780622, now seen corresponding path program 1 times [2020-09-25 04:31:42,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:42,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003245501] [2020-09-25 04:31:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:45,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:45,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:45,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 04:31:45,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:45,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2547 [2020-09-25 04:31:45,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:45,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:45,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:45,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-09-25 04:31:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:31:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:45,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:45,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:45,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:45,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:45,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:45,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:45,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:45,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:45,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:45,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:45,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:45,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:45,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:31:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:45,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:45,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:45,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 04:31:45,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 04:31:45,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:45,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:45,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:45,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 04:31:45,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:45,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003245501] [2020-09-25 04:31:45,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:45,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:45,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41798000] [2020-09-25 04:31:45,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:45,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:45,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:45,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:45,743 INFO L87 Difference]: Start difference. First operand 2236 states and 2899 transitions. Second operand 5 states. [2020-09-25 04:31:49,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:49,403 INFO L93 Difference]: Finished difference Result 6063 states and 8177 transitions. [2020-09-25 04:31:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:49,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-25 04:31:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:49,433 INFO L225 Difference]: With dead ends: 6063 [2020-09-25 04:31:49,434 INFO L226 Difference]: Without dead ends: 3844 [2020-09-25 04:31:49,444 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 04:31:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3844 states. [2020-09-25 04:31:49,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3844 to 3613. [2020-09-25 04:31:49,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3613 states. [2020-09-25 04:31:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 4767 transitions. [2020-09-25 04:31:49,572 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 4767 transitions. Word has length 145 [2020-09-25 04:31:49,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:49,574 INFO L479 AbstractCegarLoop]: Abstraction has 3613 states and 4767 transitions. [2020-09-25 04:31:49,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:49,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 4767 transitions. [2020-09-25 04:31:49,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 04:31:49,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:49,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:49,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:49,580 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:49,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1990561064, now seen corresponding path program 1 times [2020-09-25 04:31:49,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:49,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892264885] [2020-09-25 04:31:49,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:49,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:51,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:52,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:52,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 04:31:52,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:31:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3322 [2020-09-25 04:31:52,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:52,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 04:31:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:31:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:53,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:53,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:53,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:31:53,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:53,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:53,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:31:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:53,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 04:31:53,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:53,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 04:31:53,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:53,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:53,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 04:31:53,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:31:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:53,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892264885] [2020-09-25 04:31:53,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:53,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:53,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886649671] [2020-09-25 04:31:53,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:53,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:53,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:53,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:53,355 INFO L87 Difference]: Start difference. First operand 3613 states and 4767 transitions. Second operand 5 states. [2020-09-25 04:31:56,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:56,202 INFO L93 Difference]: Finished difference Result 9012 states and 12251 transitions. [2020-09-25 04:31:56,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:56,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 04:31:56,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:56,232 INFO L225 Difference]: With dead ends: 9012 [2020-09-25 04:31:56,232 INFO L226 Difference]: Without dead ends: 5416 [2020-09-25 04:31:56,247 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 04:31:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2020-09-25 04:31:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 5000. [2020-09-25 04:31:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5000 states. [2020-09-25 04:31:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 6437 transitions. [2020-09-25 04:31:56,387 INFO L78 Accepts]: Start accepts. Automaton has 5000 states and 6437 transitions. Word has length 182 [2020-09-25 04:31:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:56,387 INFO L479 AbstractCegarLoop]: Abstraction has 5000 states and 6437 transitions. [2020-09-25 04:31:56,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:56,388 INFO L276 IsEmpty]: Start isEmpty. Operand 5000 states and 6437 transitions. [2020-09-25 04:31:56,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 04:31:56,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:56,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:56,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:31:56,394 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:56,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:56,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1860749700, now seen corresponding path program 1 times [2020-09-25 04:31:56,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:56,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675956882] [2020-09-25 04:31:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:56,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:01,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:01,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 04:32:01,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:32:01,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:32:01,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:01,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 04:32:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 04:32:01,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:32:01,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:01,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:01,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:32:01,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:01,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:32:01,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:01,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:01,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:01,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:01,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:32:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:01,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:01,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:01,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 04:32:01,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:01,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 04:32:01,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:01,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:01,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:32:01,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:01,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 04:32:01,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:01,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 04:32:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:02,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:02,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:32:02,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:02,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 04:32:02,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:02,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:02,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:02,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:32:02,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:32:02,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:32:02,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675956882] [2020-09-25 04:32:02,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:02,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:32:02,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254168775] [2020-09-25 04:32:02,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:32:02,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:02,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:32:02,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:32:02,193 INFO L87 Difference]: Start difference. First operand 5000 states and 6437 transitions. Second operand 7 states.