/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:25,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:25,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:25,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:25,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:25,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:25,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:25,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:25,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:25,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:25,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:25,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:25,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:25,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:25,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:25,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:25,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:25,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:25,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:25,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:25,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:25,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:25,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:25,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:25,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:25,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:25,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:25,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:25,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:25,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:25,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:25,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:25,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:25,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:25,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:25,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:25,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:25,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:25,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:25,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:25,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:25,227 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 [2020-09-24 21:44:25,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:25,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:25,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:25,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:25,260 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:25,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:25,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:25,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:25,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:25,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:25,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:25,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:25,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:25,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:25,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:25,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:25,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:25,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:25,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:25,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:25,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:25,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:25,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:25,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:25,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:25,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:25,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:25,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:25,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:25,269 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:44:25,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:25,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:25,734 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:25,736 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:25,737 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:25,738 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-24 21:44:25,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/410ab5949/060f6c76c96b4694ae8a12050dfbcdca/FLAG4367d1441 [2020-09-24 21:44:26,462 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:26,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-24 21:44:26,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/410ab5949/060f6c76c96b4694ae8a12050dfbcdca/FLAG4367d1441 [2020-09-24 21:44:26,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/410ab5949/060f6c76c96b4694ae8a12050dfbcdca [2020-09-24 21:44:26,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:26,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:26,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:26,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:26,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:26,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:26" (1/1) ... [2020-09-24 21:44:26,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:26, skipping insertion in model container [2020-09-24 21:44:26,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:26" (1/1) ... [2020-09-24 21:44:26,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:26,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:27,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:27,315 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:27,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:27,564 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:27,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:27 WrapperNode [2020-09-24 21:44:27,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:27,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:27,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:27,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:27,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:27" (1/1) ... [2020-09-24 21:44:27,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:27" (1/1) ... [2020-09-24 21:44:27,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:27" (1/1) ... [2020-09-24 21:44:27,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:27" (1/1) ... [2020-09-24 21:44:27,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:27" (1/1) ... [2020-09-24 21:44:27,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:27" (1/1) ... [2020-09-24 21:44:27,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:27" (1/1) ... [2020-09-24 21:44:27,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:27,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:27,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:27,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:27,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:27" (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 [2020-09-24 21:44:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:29,241 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:29,241 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:29,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:29 BoogieIcfgContainer [2020-09-24 21:44:29,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:29,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:29,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:29,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:29,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:26" (1/3) ... [2020-09-24 21:44:29,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:29, skipping insertion in model container [2020-09-24 21:44:29,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:27" (2/3) ... [2020-09-24 21:44:29,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:29, skipping insertion in model container [2020-09-24 21:44:29,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:29" (3/3) ... [2020-09-24 21:44:29,261 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-09-24 21:44:29,273 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:29,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:29,308 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:29,343 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:29,344 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:29,344 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:29,344 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:29,344 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:29,344 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:29,345 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:29,345 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:29,376 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:29,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 21:44:29,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:29,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:29,388 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:29,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:29,397 INFO L82 PathProgramCache]: Analyzing trace with hash -200720489, now seen corresponding path program 1 times [2020-09-24 21:44:29,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:29,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982380634] [2020-09-24 21:44:29,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:29,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:30,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:30,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 21:44:30,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:44:30,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-24 21:44:30,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:30,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:30,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:30,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 21:44:30,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:30,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:30,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:30,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:30,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:30,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:44:30,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:30,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:30,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:30,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982380634] [2020-09-24 21:44:30,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:30,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:44:30,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664272574] [2020-09-24 21:44:30,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:44:30,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:30,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:44:30,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:44:30,806 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 21:44:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:34,191 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-24 21:44:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:44:34,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-24 21:44:34,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:34,241 INFO L225 Difference]: With dead ends: 1352 [2020-09-24 21:44:34,242 INFO L226 Difference]: Without dead ends: 806 [2020-09-24 21:44:34,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:44:34,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-24 21:44:34,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-24 21:44:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-24 21:44:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-24 21:44:34,375 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 43 [2020-09-24 21:44:34,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:34,379 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-24 21:44:34,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:44:34,379 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-24 21:44:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-24 21:44:34,387 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:34,388 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:34,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:34,388 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:34,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:34,389 INFO L82 PathProgramCache]: Analyzing trace with hash -819138438, now seen corresponding path program 1 times [2020-09-24 21:44:34,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:34,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354868860] [2020-09-24 21:44:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:34,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:34,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:35,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:35,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:37,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-24 21:44:37,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:44:37,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2961 [2020-09-24 21:44:37,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:44:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:44:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:37,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:37,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:37,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:37,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:37,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:44:37,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:37,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:44:37,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:37,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:37,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:37,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:44:37,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:44:37,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-24 21:44:37,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:44:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:38,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354868860] [2020-09-24 21:44:38,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:38,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:44:38,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587577156] [2020-09-24 21:44:38,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:44:38,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:38,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:44:38,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:44:38,336 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 9 states. [2020-09-24 21:44:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:41,254 INFO L93 Difference]: Finished difference Result 1804 states and 2293 transitions. [2020-09-24 21:44:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:44:41,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 126 [2020-09-24 21:44:41,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:41,265 INFO L225 Difference]: With dead ends: 1804 [2020-09-24 21:44:41,265 INFO L226 Difference]: Without dead ends: 1092 [2020-09-24 21:44:41,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:44:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2020-09-24 21:44:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 878. [2020-09-24 21:44:41,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-24 21:44:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1102 transitions. [2020-09-24 21:44:41,309 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1102 transitions. Word has length 126 [2020-09-24 21:44:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:41,310 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1102 transitions. [2020-09-24 21:44:41,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:44:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1102 transitions. [2020-09-24 21:44:41,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-24 21:44:41,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:41,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:41,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:44:41,320 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:41,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1331475410, now seen corresponding path program 1 times [2020-09-24 21:44:41,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:41,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164045623] [2020-09-24 21:44:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:46,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:46,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-24 21:44:46,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:44:46,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 21:44:46,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:44:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:44:46,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-24 21:44:46,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:46,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:46,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:46,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:46,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:46,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:44:46,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:46,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:46,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:46,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:46,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:46,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:46,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:46,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:46,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 21:44:46,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:44:46,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:44:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:46,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:47,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 21:44:47,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:47,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-09-24 21:44:47,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:44:47,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:47,820 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 21:44:47,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164045623] [2020-09-24 21:44:47,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:47,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:44:47,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852001765] [2020-09-24 21:44:47,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:44:47,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:47,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:44:47,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:44:47,826 INFO L87 Difference]: Start difference. First operand 878 states and 1102 transitions. Second operand 9 states. [2020-09-24 21:44:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:51,195 INFO L93 Difference]: Finished difference Result 2115 states and 2771 transitions. [2020-09-24 21:44:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:44:51,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 251 [2020-09-24 21:44:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:51,209 INFO L225 Difference]: With dead ends: 2115 [2020-09-24 21:44:51,209 INFO L226 Difference]: Without dead ends: 1378 [2020-09-24 21:44:51,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:44:51,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2020-09-24 21:44:51,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1334. [2020-09-24 21:44:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2020-09-24 21:44:51,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1646 transitions. [2020-09-24 21:44:51,276 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1646 transitions. Word has length 251 [2020-09-24 21:44:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:51,278 INFO L479 AbstractCegarLoop]: Abstraction has 1334 states and 1646 transitions. [2020-09-24 21:44:51,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:44:51,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1646 transitions. [2020-09-24 21:44:51,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-24 21:44:51,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:51,294 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:51,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:44:51,296 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:51,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:51,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1617112106, now seen corresponding path program 1 times [2020-09-24 21:44:51,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:51,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108476972] [2020-09-24 21:44:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:51,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:51,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:51,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:56,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:56,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:56,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-24 21:44:56,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:44:56,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 21:44:56,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:44:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:44:56,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:56,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:56,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:56,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:56,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:56,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 21:44:56,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:56,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:56,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:56,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:56,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:56,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:44:56,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:56,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-24 21:44:56,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:44:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:44:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:56,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:44:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:57,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:57,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:44:57,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:57,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-24 21:44:57,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:57,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 21:44:57,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 80 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:44:58,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108476972] [2020-09-24 21:44:58,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:58,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:44:58,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446120036] [2020-09-24 21:44:58,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:44:58,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:58,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:44:58,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:44:58,022 INFO L87 Difference]: Start difference. First operand 1334 states and 1646 transitions. Second operand 13 states. [2020-09-24 21:45:03,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:03,173 INFO L93 Difference]: Finished difference Result 3013 states and 3871 transitions. [2020-09-24 21:45:03,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:45:03,174 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 267 [2020-09-24 21:45:03,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:03,185 INFO L225 Difference]: With dead ends: 3013 [2020-09-24 21:45:03,185 INFO L226 Difference]: Without dead ends: 1801 [2020-09-24 21:45:03,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-09-24 21:45:03,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2020-09-24 21:45:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1720. [2020-09-24 21:45:03,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1720 states. [2020-09-24 21:45:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2212 transitions. [2020-09-24 21:45:03,256 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2212 transitions. Word has length 267 [2020-09-24 21:45:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:03,256 INFO L479 AbstractCegarLoop]: Abstraction has 1720 states and 2212 transitions. [2020-09-24 21:45:03,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:45:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2212 transitions. [2020-09-24 21:45:03,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-09-24 21:45:03,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:03,265 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:45:03,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:03,266 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:03,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:03,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1956175472, now seen corresponding path program 1 times [2020-09-24 21:45:03,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:03,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833706953] [2020-09-24 21:45:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:03,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:03,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:03,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:08,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:08,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-09-24 21:45:08,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-24 21:45:08,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 21:45:08,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:45:08,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:08,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:08,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:08,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:08,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:08,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:45:08,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:08,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:08,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:08,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:08,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:08,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:08,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:08,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:08,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 21:45:08,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:08,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-24 21:45:08,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:08,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:08,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 21:45:08,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:08,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 21:45:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:08,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:08,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:08,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:45:08,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 21:45:08,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:08,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:45:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 21:45:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:45:08,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 54 proven. 90 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 21:45:08,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833706953] [2020-09-24 21:45:08,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:08,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:45:08,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665070149] [2020-09-24 21:45:08,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:45:08,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:08,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:45:08,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:45:08,892 INFO L87 Difference]: Start difference. First operand 1720 states and 2212 transitions. Second operand 8 states. [2020-09-24 21:45:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:11,276 INFO L93 Difference]: Finished difference Result 3996 states and 5507 transitions. [2020-09-24 21:45:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:45:11,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 283 [2020-09-24 21:45:11,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:11,291 INFO L225 Difference]: With dead ends: 3996 [2020-09-24 21:45:11,291 INFO L226 Difference]: Without dead ends: 2441 [2020-09-24 21:45:11,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:11,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2020-09-24 21:45:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 2351. [2020-09-24 21:45:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2351 states. [2020-09-24 21:45:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 3030 transitions. [2020-09-24 21:45:11,379 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 3030 transitions. Word has length 283 [2020-09-24 21:45:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:11,380 INFO L479 AbstractCegarLoop]: Abstraction has 2351 states and 3030 transitions. [2020-09-24 21:45:11,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:45:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 3030 transitions. [2020-09-24 21:45:11,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-09-24 21:45:11,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:11,394 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:45:11,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:45:11,395 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:11,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:11,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1081696559, now seen corresponding path program 1 times [2020-09-24 21:45:11,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:11,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753155878] [2020-09-24 21:45:11,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:11,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:11,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:11,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking...