/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/Problem01_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:39:58,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:39:58,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:39:58,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:39:58,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:39:58,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:39:58,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:39:58,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:39:58,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:39:58,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:39:58,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:39:58,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:39:58,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:39:58,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:39:58,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:39:58,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:39:58,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:39:58,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:39:58,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:39:58,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:39:58,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:39:58,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:39:58,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:39:58,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:39:58,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:39:58,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:39:58,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:39:58,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:39:58,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:39:58,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:39:58,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:39:58,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:39:58,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:39:58,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:39:58,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:39:58,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:39:58,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:39:58,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:39:58,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:39:58,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:39:58,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:39:58,177 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 21:39:58,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:39:58,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:39:58,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:39:58,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:39:58,224 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:39:58,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:39:58,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:39:58,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:39:58,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:39:58,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:39:58,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:39:58,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:39:58,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:39:58,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:39:58,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:39:58,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:39:58,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:39:58,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:39:58,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:39:58,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:39:58,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:39:58,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:39:58,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:39:58,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:39:58,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:39:58,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:39:58,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:39:58,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:39:58,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:39:58,230 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 21:39:58,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:39:58,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:39:58,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:39:58,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:39:58,714 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:39:58,715 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-24 21:39:58,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59af4cde6/7ce0d0996bd841b1bf2d2b3aefe737c3/FLAG558814e37 [2020-09-24 21:39:59,454 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:39:59,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-24 21:39:59,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59af4cde6/7ce0d0996bd841b1bf2d2b3aefe737c3/FLAG558814e37 [2020-09-24 21:39:59,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59af4cde6/7ce0d0996bd841b1bf2d2b3aefe737c3 [2020-09-24 21:39:59,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:39:59,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:39:59,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:39:59,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:39:59,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:39:59,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:39:59" (1/1) ... [2020-09-24 21:39:59,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:59, skipping insertion in model container [2020-09-24 21:39:59,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:39:59" (1/1) ... [2020-09-24 21:39:59,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:39:59,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:40:00,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:40:00,254 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:40:00,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:40:00,522 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:40:00,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:00 WrapperNode [2020-09-24 21:40:00,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:40:00,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:40:00,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:40:00,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:40:00,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:00" (1/1) ... [2020-09-24 21:40:00,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:00" (1/1) ... [2020-09-24 21:40:00,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:00" (1/1) ... [2020-09-24 21:40:00,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:00" (1/1) ... [2020-09-24 21:40:00,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:00" (1/1) ... [2020-09-24 21:40:00,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:00" (1/1) ... [2020-09-24 21:40:00,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:00" (1/1) ... [2020-09-24 21:40:00,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:40:00,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:40:00,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:40:00,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:40:00,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:00" (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 21:40:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:40:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:40:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:40:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:40:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:40:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:40:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:40:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:40:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:40:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:40:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:40:02,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:40:02,011 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:40:02,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:40:02 BoogieIcfgContainer [2020-09-24 21:40:02,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:40:02,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:40:02,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:40:02,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:40:02,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:39:59" (1/3) ... [2020-09-24 21:40:02,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:40:02, skipping insertion in model container [2020-09-24 21:40:02,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:40:00" (2/3) ... [2020-09-24 21:40:02,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:40:02, skipping insertion in model container [2020-09-24 21:40:02,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:40:02" (3/3) ... [2020-09-24 21:40:02,030 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-09-24 21:40:02,042 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:40:02,053 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:40:02,076 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:40:02,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:40:02,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:40:02,112 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:40:02,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:40:02,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:40:02,113 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:40:02,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:40:02,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:40:02,144 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:40:02,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 21:40:02,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:02,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:02,168 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:02,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:02,176 INFO L82 PathProgramCache]: Analyzing trace with hash 907543029, now seen corresponding path program 1 times [2020-09-24 21:40:02,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:02,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-24 21:40:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:02,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:03,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:07,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:07,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:07,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 21:40:07,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:40:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 21:40:07,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:07,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 21:40:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:40:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 21:40:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:40:08,379 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-09-24 21:40:08,646 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-09-24 21:40:08,910 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 54 [2020-09-24 21:40:09,321 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 56 [2020-09-24 21:40:09,773 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 59 [2020-09-24 21:40:10,245 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 55 [2020-09-24 21:40:10,610 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 53 [2020-09-24 21:40:11,004 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 47 [2020-09-24 21:40:11,374 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 45 [2020-09-24 21:40:11,635 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 41 [2020-09-24 21:40:11,942 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2020-09-24 21:40:12,243 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 39 [2020-09-24 21:40:12,469 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 32 [2020-09-24 21:40:12,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:12,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:12,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:12,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:12,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:12,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 21:40:12,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:40:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:12,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:13,143 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 21:40:13,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-24 21:40:13,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:40:13,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-09-24 21:40:13,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321451263] [2020-09-24 21:40:13,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:40:13,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:13,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:40:13,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:40:13,176 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 23 states. [2020-09-24 21:40:13,597 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-24 21:40:13,763 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-24 21:40:13,961 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-09-24 21:40:14,418 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 121 [2020-09-24 21:40:14,767 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-09-24 21:40:15,303 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 122 [2020-09-24 21:40:15,984 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-09-24 21:40:16,128 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-09-24 21:40:16,650 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 119 [2020-09-24 21:40:17,636 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 118 [2020-09-24 21:40:17,854 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 21:40:18,472 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2020-09-24 21:40:18,932 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 110 [2020-09-24 21:40:19,996 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 107 [2020-09-24 21:40:20,620 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 107 [2020-09-24 21:40:21,139 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 104 [2020-09-24 21:40:21,525 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 102 [2020-09-24 21:40:21,885 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 99 [2020-09-24 21:40:22,398 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-24 21:40:22,563 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-24 21:40:22,890 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-09-24 21:40:23,260 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 101 [2020-09-24 21:40:23,660 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 21:40:24,119 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-24 21:40:24,567 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-09-24 21:40:24,753 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-24 21:40:25,584 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2020-09-24 21:40:26,289 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 99 [2020-09-24 21:40:26,647 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2020-09-24 21:40:27,249 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2020-09-24 21:40:27,582 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 86 [2020-09-24 21:40:27,908 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2020-09-24 21:40:28,247 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2020-09-24 21:40:28,904 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2020-09-24 21:40:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:30,968 INFO L93 Difference]: Finished difference Result 1917 states and 2797 transitions. [2020-09-24 21:40:30,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-24 21:40:30,971 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 143 [2020-09-24 21:40:30,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:31,002 INFO L225 Difference]: With dead ends: 1917 [2020-09-24 21:40:31,002 INFO L226 Difference]: Without dead ends: 1311 [2020-09-24 21:40:31,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=1162, Invalid=2744, Unknown=0, NotChecked=0, Total=3906 [2020-09-24 21:40:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-09-24 21:40:31,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1154. [2020-09-24 21:40:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1154 states. [2020-09-24 21:40:31,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1357 transitions. [2020-09-24 21:40:31,152 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1357 transitions. Word has length 143 [2020-09-24 21:40:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:31,153 INFO L479 AbstractCegarLoop]: Abstraction has 1154 states and 1357 transitions. [2020-09-24 21:40:31,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:40:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1357 transitions. [2020-09-24 21:40:31,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 21:40:31,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:31,167 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:31,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:40:31,168 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:31,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:31,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1914810438, now seen corresponding path program 1 times [2020-09-24 21:40:31,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:31,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631314174] [2020-09-24 21:40:31,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:31,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:31,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:31,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:32,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:33,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:34,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:35,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:35,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:36,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:36,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 21:40:36,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:40:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 21:40:36,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:40:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:40:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:40:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:36,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:36,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:36,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:36,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:36,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:36,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 21:40:36,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:40:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:36,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:36,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:36,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:36,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:36,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:36,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:40:36,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 21:40:36,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:40:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:36,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:37,100 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-09-24 21:40:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:40:37,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631314174] [2020-09-24 21:40:37,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:40:37,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:40:37,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028591045] [2020-09-24 21:40:37,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:40:37,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:37,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:40:37,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:40:37,211 INFO L87 Difference]: Start difference. First operand 1154 states and 1357 transitions. Second operand 13 states. [2020-09-24 21:40:38,532 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-09-24 21:40:39,288 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-09-24 21:40:39,512 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-09-24 21:40:39,715 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-09-24 21:40:41,551 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-09-24 21:40:44,467 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-09-24 21:40:45,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:45,179 INFO L93 Difference]: Finished difference Result 3266 states and 3997 transitions. [2020-09-24 21:40:45,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-24 21:40:45,180 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 164 [2020-09-24 21:40:45,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:45,194 INFO L225 Difference]: With dead ends: 3266 [2020-09-24 21:40:45,195 INFO L226 Difference]: Without dead ends: 1716 [2020-09-24 21:40:45,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=392, Invalid=940, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 21:40:45,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-09-24 21:40:45,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1498. [2020-09-24 21:40:45,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1498 states. [2020-09-24 21:40:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 1717 transitions. [2020-09-24 21:40:45,275 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 1717 transitions. Word has length 164 [2020-09-24 21:40:45,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:45,275 INFO L479 AbstractCegarLoop]: Abstraction has 1498 states and 1717 transitions. [2020-09-24 21:40:45,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:40:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 1717 transitions. [2020-09-24 21:40:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 21:40:45,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:45,281 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, 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] [2020-09-24 21:40:45,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:40:45,282 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:45,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:45,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1701253868, now seen corresponding path program 1 times [2020-09-24 21:40:45,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:45,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17986396] [2020-09-24 21:40:45,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:45,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:45,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:45,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:47,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:49,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:50,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:50,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-24 21:40:50,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:40:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:40:50,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 21:40:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:40:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 21:40:50,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:50,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:50,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:50,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:50,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:50,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:51,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 21:40:51,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:40:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:51,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:40:51,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:51,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:51,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:40:51,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:51,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 21:40:51,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:40:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:51,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 21:40:51,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:40:52,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17986396] [2020-09-24 21:40:52,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:40:52,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 21:40:52,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690586253] [2020-09-24 21:40:52,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 21:40:52,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:52,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 21:40:52,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:40:52,120 INFO L87 Difference]: Start difference. First operand 1498 states and 1717 transitions. Second operand 21 states. [2020-09-24 21:40:53,349 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-09-24 21:40:53,647 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90