/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:48:42,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:48:42,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:48:42,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:48:42,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:48:42,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:48:42,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:48:42,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:48:42,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:48:42,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:48:42,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:48:42,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:48:42,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:48:42,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:48:42,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:48:42,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:48:42,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:48:42,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:48:42,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:48:42,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:48:42,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:48:42,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:48:42,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:48:42,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:48:42,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:48:42,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:48:42,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:48:42,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:48:42,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:48:42,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:48:42,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:48:42,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:48:42,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:48:42,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:48:42,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:48:42,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:48:42,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:48:42,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:48:42,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:48:42,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:48:42,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:48:42,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:48:42,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:48:42,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:48:42,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:48:42,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:48:42,238 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:48:42,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:48:42,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:48:42,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:48:42,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:48:42,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:48:42,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:48:42,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:48:42,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:48:42,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:48:42,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:48:42,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:48:42,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:48:42,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:48:42,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:48:42,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:48:42,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:48:42,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:42,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:48:42,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:48:42,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:48:42,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:48:42,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:48:42,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:48:42,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:48:42,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:48:42,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:48:42,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:48:42,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:48:42,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:48:42,729 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:48:42,730 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 06:48:42,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cddc9c05/32af530ccfbe4a7e9b1f3a35a5fc175a/FLAG2c62edb70 [2020-09-25 06:48:43,435 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:48:43,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 06:48:43,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cddc9c05/32af530ccfbe4a7e9b1f3a35a5fc175a/FLAG2c62edb70 [2020-09-25 06:48:43,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cddc9c05/32af530ccfbe4a7e9b1f3a35a5fc175a [2020-09-25 06:48:43,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:48:43,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:48:43,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:43,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:48:43,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:48:43,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:43" (1/1) ... [2020-09-25 06:48:43,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67578ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:43, skipping insertion in model container [2020-09-25 06:48:43,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:43" (1/1) ... [2020-09-25 06:48:43,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:48:43,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:48:44,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:44,559 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:48:44,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:44,781 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:48:44,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44 WrapperNode [2020-09-25 06:48:44,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:44,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:48:44,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:48:44,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:48:44,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... [2020-09-25 06:48:44,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:48:44,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:48:44,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:48:44,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:48:44,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:45,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:48:45,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:48:45,082 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:48:45,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:48:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:48:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:48:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:48:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:48:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:48:45,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:48:45,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:48:47,579 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:48:47,579 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:48:47,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:47 BoogieIcfgContainer [2020-09-25 06:48:47,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:48:47,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:48:47,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:48:47,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:48:47,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:48:43" (1/3) ... [2020-09-25 06:48:47,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c6efbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:47, skipping insertion in model container [2020-09-25 06:48:47,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:44" (2/3) ... [2020-09-25 06:48:47,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c6efbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:47, skipping insertion in model container [2020-09-25 06:48:47,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:47" (3/3) ... [2020-09-25 06:48:47,606 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-25 06:48:47,617 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:48:47,628 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:48:47,650 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:48:47,688 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:48:47,688 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:48:47,688 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:48:47,688 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:48:47,688 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:48:47,688 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:48:47,689 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:48:47,689 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:48:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 06:48:47,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 06:48:47,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:47,735 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] [2020-09-25 06:48:47,735 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:47,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:47,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-25 06:48:47,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:47,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713308854] [2020-09-25 06:48:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:47,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:48,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:48,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 06:48:48,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:48:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-09-25 06:48:48,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:48,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:48,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:48,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:48:48,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:48:48,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:48:48,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:48,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:48,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:48,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:48:48,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:48,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:48:48,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:48,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:48:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:48,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713308854] [2020-09-25 06:48:48,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:48,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:48:48,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983411869] [2020-09-25 06:48:48,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:48:48,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:48,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:48:48,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:48:48,905 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 06:48:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:52,877 INFO L93 Difference]: Finished difference Result 1935 states and 2532 transitions. [2020-09-25 06:48:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:48:52,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-09-25 06:48:52,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:52,906 INFO L225 Difference]: With dead ends: 1935 [2020-09-25 06:48:52,906 INFO L226 Difference]: Without dead ends: 1050 [2020-09-25 06:48:52,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-25 06:48:53,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 997. [2020-09-25 06:48:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 06:48:53,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1185 transitions. [2020-09-25 06:48:53,055 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1185 transitions. Word has length 39 [2020-09-25 06:48:53,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:53,056 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1185 transitions. [2020-09-25 06:48:53,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:48:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1185 transitions. [2020-09-25 06:48:53,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 06:48:53,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:53,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:48:53,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:48:53,071 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:53,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:53,071 INFO L82 PathProgramCache]: Analyzing trace with hash 878303855, now seen corresponding path program 1 times [2020-09-25 06:48:53,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:53,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226032824] [2020-09-25 06:48:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:53,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:53,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:54,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:54,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 06:48:54,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:48:54,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1816 [2020-09-25 06:48:54,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:54,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:48:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:48:54,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:55,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:55,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:55,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:55,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:48:55,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:55,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 06:48:55,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:55,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:55,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:55,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:48:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:55,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:48:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:55,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:55,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:55,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:48:55,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:55,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 06:48:55,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:55,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:48:55,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:55,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226032824] [2020-09-25 06:48:55,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:55,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:55,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213517166] [2020-09-25 06:48:55,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:55,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:55,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:55,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:55,505 INFO L87 Difference]: Start difference. First operand 997 states and 1185 transitions. Second operand 7 states. [2020-09-25 06:49:00,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:00,415 INFO L93 Difference]: Finished difference Result 2632 states and 3210 transitions. [2020-09-25 06:49:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:49:00,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-09-25 06:49:00,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:00,425 INFO L225 Difference]: With dead ends: 2632 [2020-09-25 06:49:00,425 INFO L226 Difference]: Without dead ends: 1652 [2020-09-25 06:49:00,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:49:00,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2020-09-25 06:49:00,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1412. [2020-09-25 06:49:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2020-09-25 06:49:00,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1694 transitions. [2020-09-25 06:49:00,474 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1694 transitions. Word has length 121 [2020-09-25 06:49:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:00,475 INFO L479 AbstractCegarLoop]: Abstraction has 1412 states and 1694 transitions. [2020-09-25 06:49:00,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:00,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1694 transitions. [2020-09-25 06:49:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 06:49:00,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:00,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:49:00,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:49:00,477 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2121372736, now seen corresponding path program 1 times [2020-09-25 06:49:00,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:00,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469516073] [2020-09-25 06:49:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:00,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:01,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:03,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:04,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 06:49:04,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:49:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3985 [2020-09-25 06:49:04,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:04,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:49:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 06:49:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:04,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:04,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:04,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:49:04,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:04,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:49:04,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:04,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:04,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:49:04,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:04,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:49:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:04,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:04,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:49:04,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 06:49:04,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:04,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 06:49:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:04,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469516073] [2020-09-25 06:49:04,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:04,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:04,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721675475] [2020-09-25 06:49:04,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:04,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:04,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:04,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:04,924 INFO L87 Difference]: Start difference. First operand 1412 states and 1694 transitions. Second operand 7 states. [2020-09-25 06:49:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:09,020 INFO L93 Difference]: Finished difference Result 3203 states and 3996 transitions. [2020-09-25 06:49:09,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:49:09,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-09-25 06:49:09,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:09,033 INFO L225 Difference]: With dead ends: 3203 [2020-09-25 06:49:09,033 INFO L226 Difference]: Without dead ends: 1808 [2020-09-25 06:49:09,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:49:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2020-09-25 06:49:09,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1772. [2020-09-25 06:49:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1772 states. [2020-09-25 06:49:09,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2090 transitions. [2020-09-25 06:49:09,094 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2090 transitions. Word has length 125 [2020-09-25 06:49:09,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:09,099 INFO L479 AbstractCegarLoop]: Abstraction has 1772 states and 2090 transitions. [2020-09-25 06:49:09,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:09,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2090 transitions. [2020-09-25 06:49:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 06:49:09,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:09,107 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:49:09,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:49:09,108 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:09,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:09,108 INFO L82 PathProgramCache]: Analyzing trace with hash 779885706, now seen corresponding path program 1 times [2020-09-25 06:49:09,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:09,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360219768] [2020-09-25 06:49:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:09,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:09,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:09,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:09,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:11,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:11,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:14,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:14,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 06:49:14,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:49:14,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:49:14,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:14,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 06:49:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:49:14,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:14,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:14,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:14,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:14,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:49:14,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:14,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:49:14,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:14,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:14,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:14,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:49:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:14,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:14,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 06:49:14,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 06:49:14,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:14,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 06:49:14,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:14,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360219768] [2020-09-25 06:49:14,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:14,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:49:14,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371333182] [2020-09-25 06:49:14,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:49:14,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:14,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:49:14,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:49:14,539 INFO L87 Difference]: Start difference. First operand 1772 states and 2090 transitions. Second operand 5 states. [2020-09-25 06:49:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:18,038 INFO L93 Difference]: Finished difference Result 3742 states and 4461 transitions. [2020-09-25 06:49:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:49:18,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 06:49:18,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:18,051 INFO L225 Difference]: With dead ends: 3742 [2020-09-25 06:49:18,051 INFO L226 Difference]: Without dead ends: 2388 [2020-09-25 06:49:18,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:49:18,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2020-09-25 06:49:18,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1980. [2020-09-25 06:49:18,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1980 states. [2020-09-25 06:49:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2365 transitions. [2020-09-25 06:49:18,108 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2365 transitions. Word has length 164 [2020-09-25 06:49:18,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:18,109 INFO L479 AbstractCegarLoop]: Abstraction has 1980 states and 2365 transitions. [2020-09-25 06:49:18,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:49:18,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2365 transitions. [2020-09-25 06:49:18,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 06:49:18,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:18,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:49:18,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:49:18,112 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:18,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:18,112 INFO L82 PathProgramCache]: Analyzing trace with hash 279477351, now seen corresponding path program 1 times [2020-09-25 06:49:18,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:18,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729562828] [2020-09-25 06:49:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:18,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:20,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:20,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 06:49:20,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:49:20,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1855 [2020-09-25 06:49:20,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:20,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 06:49:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:49:20,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:20,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:20,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:20,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:20,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:49:20,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:49:20,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:20,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:20,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:20,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:20,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:20,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:49:20,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:49:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:20,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:20,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:20,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 06:49:20,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:20,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 06:49:20,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:20,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 06:49:20,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:20,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729562828] [2020-09-25 06:49:20,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:20,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:49:20,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990409310] [2020-09-25 06:49:20,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:49:20,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:20,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:49:20,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:49:20,397 INFO L87 Difference]: Start difference. First operand 1980 states and 2365 transitions. Second operand 5 states. [2020-09-25 06:49:26,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:26,631 INFO L93 Difference]: Finished difference Result 4645 states and 5831 transitions. [2020-09-25 06:49:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:49:26,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 06:49:26,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:26,647 INFO L225 Difference]: With dead ends: 4645 [2020-09-25 06:49:26,648 INFO L226 Difference]: Without dead ends: 3083 [2020-09-25 06:49:26,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:49:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2020-09-25 06:49:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 2833. [2020-09-25 06:49:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2020-09-25 06:49:26,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3517 transitions. [2020-09-25 06:49:26,730 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3517 transitions. Word has length 180 [2020-09-25 06:49:26,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:26,731 INFO L479 AbstractCegarLoop]: Abstraction has 2833 states and 3517 transitions. [2020-09-25 06:49:26,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:49:26,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3517 transitions. [2020-09-25 06:49:26,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 06:49:26,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:26,736 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:49:26,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:49:26,737 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:26,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2038122493, now seen corresponding path program 1 times [2020-09-25 06:49:26,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:26,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588633087] [2020-09-25 06:49:26,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:27,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 06:49:29,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:49:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2335 [2020-09-25 06:49:29,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:29,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-09-25 06:49:29,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:49:29,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:29,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:29,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:49:29,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:29,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:49:29,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:29,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:29,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:29,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:49:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:29,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 06:49:29,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:29,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 06:49:29,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 06:49:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:29,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 06:49:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:29,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:49:29,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:29,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 06:49:29,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:29,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:29,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:49:29,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:29,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588633087] [2020-09-25 06:49:29,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:29,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:49:29,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158575309] [2020-09-25 06:49:29,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:29,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:29,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:29,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:29,777 INFO L87 Difference]: Start difference. First operand 2833 states and 3517 transitions. Second operand 7 states.