/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=SMALLEST --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 18:24:06,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:24:06,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:24:06,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:24:06,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:24:06,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:24:06,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:24:06,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:24:06,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:24:06,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:24:06,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:24:06,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:24:06,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:24:06,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:24:06,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:24:06,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:24:06,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:24:06,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:24:06,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:24:06,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:24:06,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:24:06,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:24:06,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:24:06,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:24:06,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:24:06,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:24:06,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:24:06,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:24:06,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:24:06,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:24:06,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:24:06,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:24:06,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:24:06,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:24:06,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:24:06,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:24:06,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:24:06,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:24:06,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:24:06,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:24:06,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:24:06,705 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 18:24:06,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:24:06,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:24:06,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:24:06,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:24:06,761 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:24:06,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:24:06,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:24:06,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:24:06,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:24:06,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:24:06,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:24:06,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:24:06,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:24:06,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:24:06,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:24:06,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:24:06,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:24:06,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:24:06,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:24:06,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:24:06,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:24:06,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:24:06,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:24:06,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:24:06,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:24:06,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:24:06,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:24:06,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:24:06,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:24:06,768 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:24:07,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:24:07,258 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:24:07,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:24:07,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:24:07,265 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:24:07,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-24 18:24:07,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96bdcffeb/d063bea3ca784d63b6fdc4b42253f2ea/FLAGad9b86957 [2020-09-24 18:24:08,037 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:24:08,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-24 18:24:08,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96bdcffeb/d063bea3ca784d63b6fdc4b42253f2ea/FLAGad9b86957 [2020-09-24 18:24:08,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96bdcffeb/d063bea3ca784d63b6fdc4b42253f2ea [2020-09-24 18:24:08,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:24:08,286 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:24:08,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:08,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:24:08,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:24:08,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:08" (1/1) ... [2020-09-24 18:24:08,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5f9fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:08, skipping insertion in model container [2020-09-24 18:24:08,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:08" (1/1) ... [2020-09-24 18:24:08,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:24:08,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:24:08,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:08,944 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:24:09,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:09,100 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:24:09,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:09 WrapperNode [2020-09-24 18:24:09,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:09,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:24:09,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:24:09,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:24:09,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:09" (1/1) ... [2020-09-24 18:24:09,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:09" (1/1) ... [2020-09-24 18:24:09,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:09" (1/1) ... [2020-09-24 18:24:09,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:09" (1/1) ... [2020-09-24 18:24:09,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:09" (1/1) ... [2020-09-24 18:24:09,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:09" (1/1) ... [2020-09-24 18:24:09,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:09" (1/1) ... [2020-09-24 18:24:09,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:24:09,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:24:09,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:24:09,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:24:09,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:09" (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 18:24:09,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:24:09,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:24:09,322 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:24:09,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:24:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:24:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:24:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:24:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:24:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:24:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:24:09,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:24:10,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:24:10,959 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:24:10,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:10 BoogieIcfgContainer [2020-09-24 18:24:10,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:24:10,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:24:10,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:24:10,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:24:10,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:24:08" (1/3) ... [2020-09-24 18:24:10,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7035905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:10, skipping insertion in model container [2020-09-24 18:24:10,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:09" (2/3) ... [2020-09-24 18:24:10,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7035905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:10, skipping insertion in model container [2020-09-24 18:24:10,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:10" (3/3) ... [2020-09-24 18:24:10,979 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-09-24 18:24:10,991 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:24:11,002 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:24:11,025 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:24:11,064 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:24:11,064 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:24:11,064 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:24:11,064 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:24:11,064 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:24:11,065 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:24:11,065 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:24:11,065 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:24:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:24:11,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 18:24:11,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:11,108 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 18:24:11,109 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:11,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:11,117 INFO L82 PathProgramCache]: Analyzing trace with hash -200720489, now seen corresponding path program 1 times [2020-09-24 18:24:11,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:11,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086755843] [2020-09-24 18:24:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:12,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 18:24:12,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:24:12,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-09-24 18:24:12,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:12,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:24:12,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 18:24:12,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:24:12,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:12,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:12,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:12,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:12,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:24:12,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:12,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:24:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:12,424 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 18:24:12,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086755843] [2020-09-24 18:24:12,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:24:12,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:24:12,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245386979] [2020-09-24 18:24:12,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:24:12,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:12,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:24:12,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:24:12,459 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:24:14,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:14,521 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 18:24:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:24:14,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-24 18:24:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:14,557 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 18:24:14,558 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 18:24:14,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 18:24:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 18:24:14,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 18:24:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 18:24:14,674 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 43 [2020-09-24 18:24:14,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:14,675 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 18:24:14,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:24:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 18:24:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 18:24:14,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:14,683 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] [2020-09-24 18:24:14,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:24:14,684 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1041597203, now seen corresponding path program 1 times [2020-09-24 18:24:14,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:14,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633133274] [2020-09-24 18:24:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:14,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:14,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:15,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:15,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:16,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:16,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:16,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 18:24:16,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:16,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1827 [2020-09-24 18:24:16,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:16,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:16,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-24 18:24:16,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:24:16,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:16,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:16,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:16,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:16,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:16,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:16,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:24:16,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:16,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:16,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:16,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:16,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:16,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:16,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:16,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:24:16,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:16,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 18:24:16,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 18:24:16,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:16,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633133274] [2020-09-24 18:24:16,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:16,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:24:16,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114727035] [2020-09-24 18:24:16,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:24:16,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:16,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:24:16,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:16,871 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 6 states. [2020-09-24 18:24:19,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:19,479 INFO L93 Difference]: Finished difference Result 1387 states and 1814 transitions. [2020-09-24 18:24:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:24:19,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-09-24 18:24:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:19,486 INFO L225 Difference]: With dead ends: 1387 [2020-09-24 18:24:19,486 INFO L226 Difference]: Without dead ends: 859 [2020-09-24 18:24:19,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:24:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-24 18:24:19,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-24 18:24:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-24 18:24:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1090 transitions. [2020-09-24 18:24:19,559 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1090 transitions. Word has length 123 [2020-09-24 18:24:19,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:19,560 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1090 transitions. [2020-09-24 18:24:19,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:24:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1090 transitions. [2020-09-24 18:24:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 18:24:19,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:19,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:19,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:24:19,587 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:19,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:19,588 INFO L82 PathProgramCache]: Analyzing trace with hash 2044252991, now seen corresponding path program 1 times [2020-09-24 18:24:19,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:19,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825570961] [2020-09-24 18:24:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:19,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:19,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:19,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:24,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:24,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-24 18:24:24,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:24:24,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-24 18:24:24,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-09-24 18:24:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:24:24,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:24,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:24,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:24,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:24,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:24,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:24:24,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:24,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:24,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 18:24:24,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:24,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 18:24:24,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:24,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:24,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-24 18:24:24,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:25,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825570961] [2020-09-24 18:24:25,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:25,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:25,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056774620] [2020-09-24 18:24:25,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:25,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:25,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:25,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:25,071 INFO L87 Difference]: Start difference. First operand 849 states and 1090 transitions. Second operand 5 states. [2020-09-24 18:24:26,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:26,868 INFO L93 Difference]: Finished difference Result 2377 states and 3152 transitions. [2020-09-24 18:24:26,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:26,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-09-24 18:24:26,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:26,879 INFO L225 Difference]: With dead ends: 2377 [2020-09-24 18:24:26,879 INFO L226 Difference]: Without dead ends: 1543 [2020-09-24 18:24:26,883 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 [2020-09-24 18:24:26,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-09-24 18:24:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1338. [2020-09-24 18:24:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-09-24 18:24:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1719 transitions. [2020-09-24 18:24:26,933 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1719 transitions. Word has length 172 [2020-09-24 18:24:26,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:26,934 INFO L479 AbstractCegarLoop]: Abstraction has 1338 states and 1719 transitions. [2020-09-24 18:24:26,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1719 transitions. [2020-09-24 18:24:26,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-24 18:24:26,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:26,942 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 18:24:26,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:24:26,943 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:26,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:26,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1617112106, now seen corresponding path program 1 times [2020-09-24 18:24:26,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:26,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461571211] [2020-09-24 18:24:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:27,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:27,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:27,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:29,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:30,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:31,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:32,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-24 18:24:32,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:24:32,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-24 18:24:32,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 18:24:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 18:24:32,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:32,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:32,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:32,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:32,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:32,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:24:32,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:32,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:32,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:32,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:32,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:24:32,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 18:24:32,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 18:24:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:32,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 18:24:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:32,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:32,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:24:32,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:32,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 18:24:32,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:32,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:24:32,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:32,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461571211] [2020-09-24 18:24:32,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:32,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:32,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196440977] [2020-09-24 18:24:32,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:32,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:32,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:32,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:32,751 INFO L87 Difference]: Start difference. First operand 1338 states and 1719 transitions. Second operand 7 states. [2020-09-24 18:24:34,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:34,881 INFO L93 Difference]: Finished difference Result 3015 states and 3967 transitions. [2020-09-24 18:24:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:24:34,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-09-24 18:24:34,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:34,895 INFO L225 Difference]: With dead ends: 3015 [2020-09-24 18:24:34,895 INFO L226 Difference]: Without dead ends: 1348 [2020-09-24 18:24:34,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:24:34,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-09-24 18:24:34,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1318. [2020-09-24 18:24:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1318 states. [2020-09-24 18:24:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1668 transitions. [2020-09-24 18:24:34,988 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1668 transitions. Word has length 267 [2020-09-24 18:24:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:34,989 INFO L479 AbstractCegarLoop]: Abstraction has 1318 states and 1668 transitions. [2020-09-24 18:24:34,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1668 transitions. [2020-09-24 18:24:34,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-09-24 18:24:34,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:34,999 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, 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] [2020-09-24 18:24:34,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:35,000 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:35,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:35,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1896188214, now seen corresponding path program 1 times [2020-09-24 18:24:35,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:35,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229843325] [2020-09-24 18:24:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:35,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:35,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:35,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:35,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:36,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:37,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:39,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:40,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-09-24 18:24:40,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:24:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 18:24:40,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 18:24:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 18:24:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:40,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:40,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:40,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:40,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:24:40,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:40,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:40,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:40,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:40,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 18:24:40,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 18:24:40,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 18:24:40,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:40,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 18:24:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:40,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:40,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:24:40,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:40,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-24 18:24:40,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:24:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:40,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229843325] [2020-09-24 18:24:40,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:40,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:40,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932125836] [2020-09-24 18:24:40,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:40,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:40,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:40,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:40,924 INFO L87 Difference]: Start difference. First operand 1318 states and 1668 transitions. Second operand 7 states. [2020-09-24 18:24:44,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:44,055 INFO L93 Difference]: Finished difference Result 3903 states and 5243 transitions. [2020-09-24 18:24:44,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:44,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-09-24 18:24:44,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:44,076 INFO L225 Difference]: With dead ends: 3903 [2020-09-24 18:24:44,076 INFO L226 Difference]: Without dead ends: 2600 [2020-09-24 18:24:44,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:44,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2020-09-24 18:24:44,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2076. [2020-09-24 18:24:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2076 states. [2020-09-24 18:24:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2666 transitions. [2020-09-24 18:24:44,168 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2666 transitions. Word has length 286 [2020-09-24 18:24:44,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:44,169 INFO L479 AbstractCegarLoop]: Abstraction has 2076 states and 2666 transitions. [2020-09-24 18:24:44,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:44,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2666 transitions. [2020-09-24 18:24:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-09-24 18:24:44,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:44,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:44,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:24:44,183 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:44,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:44,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1325622704, now seen corresponding path program 1 times [2020-09-24 18:24:44,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:44,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817948002] [2020-09-24 18:24:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:44,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:44,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:45,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:45,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:49,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-09-24 18:24:49,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:24:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:24:49,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-24 18:24:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 18:24:49,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:49,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:49,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:49,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:49,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:24:49,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:49,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:49,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:49,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:49,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:24:49,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:49,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:24:49,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:49,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:49,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:49,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:49,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 18:24:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:49,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:49,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:24:49,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:49,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 18:24:49,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:24:49,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:49,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-24 18:24:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:49,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:24:49,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:49,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-24 18:24:49,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:49,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:24:49,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-24 18:24:50,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817948002] [2020-09-24 18:24:50,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:50,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:50,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828609324] [2020-09-24 18:24:50,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:50,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:50,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:50,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:50,047 INFO L87 Difference]: Start difference. First operand 2076 states and 2666 transitions. Second operand 7 states. [2020-09-24 18:24:52,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:52,662 INFO L93 Difference]: Finished difference Result 5083 states and 6759 transitions. [2020-09-24 18:24:52,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:24:52,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-09-24 18:24:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:52,688 INFO L225 Difference]: With dead ends: 5083 [2020-09-24 18:24:52,688 INFO L226 Difference]: Without dead ends: 3032 [2020-09-24 18:24:52,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:24:52,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2020-09-24 18:24:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2885. [2020-09-24 18:24:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2885 states. [2020-09-24 18:24:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 3597 transitions. [2020-09-24 18:24:52,794 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 3597 transitions. Word has length 341 [2020-09-24 18:24:52,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:52,795 INFO L479 AbstractCegarLoop]: Abstraction has 2885 states and 3597 transitions. [2020-09-24 18:24:52,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:52,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 3597 transitions. [2020-09-24 18:24:52,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-09-24 18:24:52,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:52,815 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, 3, 3, 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 18:24:52,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:24:52,815 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:52,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:52,816 INFO L82 PathProgramCache]: Analyzing trace with hash 563904193, now seen corresponding path program 1 times [2020-09-24 18:24:52,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:52,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640261311] [2020-09-24 18:24:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking...