/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/Problem02_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:22:57,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:22:57,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:22:57,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:22:57,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:22:57,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:22:57,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:22:57,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:22:57,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:22:57,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:22:57,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:22:57,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:22:57,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:22:57,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:22:57,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:22:57,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:22:57,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:22:57,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:22:57,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:22:57,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:22:57,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:22:57,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:22:57,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:22:57,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:22:57,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:22:57,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:22:57,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:22:57,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:22:57,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:22:57,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:22:57,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:22:57,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:22:57,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:22:57,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:22:57,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:22:57,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:22:57,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:22:57,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:22:57,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:22:57,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:22:57,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:22:57,197 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 18:22:57,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:22:57,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:22:57,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:22:57,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:22:57,251 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:22:57,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:22:57,252 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:22:57,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:22:57,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:22:57,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:22:57,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:22:57,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:22:57,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:22:57,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:22:57,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:22:57,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:22:57,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:22:57,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:22:57,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:22:57,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:22:57,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:22:57,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:22:57,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:22:57,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:22:57,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:22:57,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:22:57,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:22:57,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:22:57,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:22:57,258 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 18:22:57,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:22:57,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:22:57,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:22:57,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:22:57,723 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:22:57,724 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-24 18:22:57,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6573c6771/faf28e777ed24bc88e67d0f8af07ef31/FLAG699327fc0 [2020-09-24 18:22:58,480 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:22:58,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-24 18:22:58,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6573c6771/faf28e777ed24bc88e67d0f8af07ef31/FLAG699327fc0 [2020-09-24 18:22:58,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6573c6771/faf28e777ed24bc88e67d0f8af07ef31 [2020-09-24 18:22:58,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:22:58,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:22:58,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:58,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:22:58,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:22:58,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:58" (1/1) ... [2020-09-24 18:22:58,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:58, skipping insertion in model container [2020-09-24 18:22:58,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:58" (1/1) ... [2020-09-24 18:22:58,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:22:58,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:22:59,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:59,295 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:22:59,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:59,547 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:22:59,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:59 WrapperNode [2020-09-24 18:22:59,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:59,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:22:59,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:22:59,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:22:59,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:59" (1/1) ... [2020-09-24 18:22:59,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:59" (1/1) ... [2020-09-24 18:22:59,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:59" (1/1) ... [2020-09-24 18:22:59,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:59" (1/1) ... [2020-09-24 18:22:59,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:59" (1/1) ... [2020-09-24 18:22:59,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:59" (1/1) ... [2020-09-24 18:22:59,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:59" (1/1) ... [2020-09-24 18:22:59,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:22:59,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:22:59,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:22:59,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:22:59,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:59" (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 18:22:59,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:22:59,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:22:59,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:22:59,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:22:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:22:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:22:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:22:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:22:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:22:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:22:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:01,496 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:01,496 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:01,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:01 BoogieIcfgContainer [2020-09-24 18:23:01,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:01,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:01,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:01,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:01,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:22:58" (1/3) ... [2020-09-24 18:23:01,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223d6873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:01, skipping insertion in model container [2020-09-24 18:23:01,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:59" (2/3) ... [2020-09-24 18:23:01,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223d6873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:01, skipping insertion in model container [2020-09-24 18:23:01,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:01" (3/3) ... [2020-09-24 18:23:01,517 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2020-09-24 18:23:01,529 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:01,541 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:01,565 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:01,604 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:01,604 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:01,605 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:01,605 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:01,605 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:01,605 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:01,605 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:01,605 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:01,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-24 18:23:01,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:01,659 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] [2020-09-24 18:23:01,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1858793511, now seen corresponding path program 1 times [2020-09-24 18:23:01,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:01,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424934705] [2020-09-24 18:23:01,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:01,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:02,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:05,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:06,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 18:23:06,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:06,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:23:06,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:23:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 18:23:06,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:07,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:07,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:07,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:07,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:23:07,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:07,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:23:07,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:07,241 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 18:23:07,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424934705] [2020-09-24 18:23:07,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:07,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:23:07,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969482440] [2020-09-24 18:23:07,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:23:07,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:07,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:23:07,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:23:07,284 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:23:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:09,587 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-24 18:23:09,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:23:09,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-09-24 18:23:09,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:09,615 INFO L225 Difference]: With dead ends: 1396 [2020-09-24 18:23:09,616 INFO L226 Difference]: Without dead ends: 788 [2020-09-24 18:23:09,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:09,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-24 18:23:09,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-24 18:23:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-24 18:23:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-24 18:23:09,738 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 116 [2020-09-24 18:23:09,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:09,739 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-24 18:23:09,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:23:09,739 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-24 18:23:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-24 18:23:09,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:09,748 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:23:09,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:09,749 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:09,750 INFO L82 PathProgramCache]: Analyzing trace with hash 525477933, now seen corresponding path program 1 times [2020-09-24 18:23:09,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:09,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918523228] [2020-09-24 18:23:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:09,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:09,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:12,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:14,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 18:23:14,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:14,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:23:14,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:23:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 18:23:14,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:14,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:14,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:14,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:14,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:14,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:14,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:14,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:14,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:14,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:14,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:14,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:14,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:23:14,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:23:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:15,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918523228] [2020-09-24 18:23:15,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:15,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:15,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774360809] [2020-09-24 18:23:15,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:15,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:15,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:15,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:15,030 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-24 18:23:16,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:16,924 INFO L93 Difference]: Finished difference Result 1662 states and 2128 transitions. [2020-09-24 18:23:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:16,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-24 18:23:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:16,934 INFO L225 Difference]: With dead ends: 1662 [2020-09-24 18:23:16,934 INFO L226 Difference]: Without dead ends: 1019 [2020-09-24 18:23:16,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:16,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-24 18:23:16,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 971. [2020-09-24 18:23:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-24 18:23:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1181 transitions. [2020-09-24 18:23:16,986 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1181 transitions. Word has length 134 [2020-09-24 18:23:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:16,987 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1181 transitions. [2020-09-24 18:23:16,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1181 transitions. [2020-09-24 18:23:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 18:23:16,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:16,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:16,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:16,993 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:16,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:16,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1960543630, now seen corresponding path program 1 times [2020-09-24 18:23:16,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:16,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190915980] [2020-09-24 18:23:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:17,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:20,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:22,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-24 18:23:22,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:23:22,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 18:23:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 18:23:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:22,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:22,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:22,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:22,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:22,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:22,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:22,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:22,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:23:22,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:22,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:23:22,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:22,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:23:22,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:22,254 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:22,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190915980] [2020-09-24 18:23:22,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:22,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:22,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887801096] [2020-09-24 18:23:22,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:22,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:22,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:22,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:22,258 INFO L87 Difference]: Start difference. First operand 971 states and 1181 transitions. Second operand 5 states. [2020-09-24 18:23:24,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:24,541 INFO L93 Difference]: Finished difference Result 2277 states and 2879 transitions. [2020-09-24 18:23:24,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:24,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-24 18:23:24,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:24,553 INFO L225 Difference]: With dead ends: 2277 [2020-09-24 18:23:24,554 INFO L226 Difference]: Without dead ends: 1328 [2020-09-24 18:23:24,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2020-09-24 18:23:24,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1276. [2020-09-24 18:23:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-09-24 18:23:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1534 transitions. [2020-09-24 18:23:24,626 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1534 transitions. Word has length 135 [2020-09-24 18:23:24,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:24,627 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1534 transitions. [2020-09-24 18:23:24,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1534 transitions. [2020-09-24 18:23:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-24 18:23:24,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:24,642 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:23:24,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:24,643 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:24,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:24,644 INFO L82 PathProgramCache]: Analyzing trace with hash 336019643, now seen corresponding path program 1 times [2020-09-24 18:23:24,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:24,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118894550] [2020-09-24 18:23:24,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:24,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:29,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:29,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-24 18:23:29,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4806 [2020-09-24 18:23:29,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:23:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 18:23:29,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:29,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:29,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:29,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:29,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:29,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:23:29,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:29,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:29,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:29,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:29,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:29,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:29,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:29,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:23:29,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:29,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:29,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:23:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:29,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118894550] [2020-09-24 18:23:29,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:29,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:23:29,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975282823] [2020-09-24 18:23:29,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:23:29,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:29,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:23:29,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:29,789 INFO L87 Difference]: Start difference. First operand 1276 states and 1534 transitions. Second operand 6 states. [2020-09-24 18:23:32,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:32,504 INFO L93 Difference]: Finished difference Result 3233 states and 4117 transitions. [2020-09-24 18:23:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:23:32,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-24 18:23:32,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:32,524 INFO L225 Difference]: With dead ends: 3233 [2020-09-24 18:23:32,524 INFO L226 Difference]: Without dead ends: 1979 [2020-09-24 18:23:32,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:23:32,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2020-09-24 18:23:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1888. [2020-09-24 18:23:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2020-09-24 18:23:32,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2347 transitions. [2020-09-24 18:23:32,605 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2347 transitions. Word has length 138 [2020-09-24 18:23:32,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:32,606 INFO L479 AbstractCegarLoop]: Abstraction has 1888 states and 2347 transitions. [2020-09-24 18:23:32,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:23:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2347 transitions. [2020-09-24 18:23:32,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 18:23:32,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:32,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:32,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:23:32,618 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:32,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:32,618 INFO L82 PathProgramCache]: Analyzing trace with hash 771470164, now seen corresponding path program 1 times [2020-09-24 18:23:32,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:32,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169858676] [2020-09-24 18:23:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:32,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:33,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:35,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:38,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 18:23:38,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:38,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5368 [2020-09-24 18:23:38,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:23:38,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:23:38,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:38,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:38,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:38,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:38,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:38,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:23:38,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:38,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:38,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:38,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:38,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 18:23:38,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:38,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 18:23:38,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 18:23:38,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:38,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169858676] [2020-09-24 18:23:38,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:38,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:23:38,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927196563] [2020-09-24 18:23:38,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:38,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:38,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:38,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:38,335 INFO L87 Difference]: Start difference. First operand 1888 states and 2347 transitions. Second operand 7 states. [2020-09-24 18:23:40,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:40,972 INFO L93 Difference]: Finished difference Result 5614 states and 7326 transitions. [2020-09-24 18:23:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:23:40,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-09-24 18:23:40,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:40,996 INFO L225 Difference]: With dead ends: 5614 [2020-09-24 18:23:40,996 INFO L226 Difference]: Without dead ends: 3748 [2020-09-24 18:23:41,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2020-09-24 18:23:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3439. [2020-09-24 18:23:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3439 states. [2020-09-24 18:23:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 4306 transitions. [2020-09-24 18:23:41,118 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 4306 transitions. Word has length 164 [2020-09-24 18:23:41,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:41,118 INFO L479 AbstractCegarLoop]: Abstraction has 3439 states and 4306 transitions. [2020-09-24 18:23:41,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:41,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 4306 transitions. [2020-09-24 18:23:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-24 18:23:41,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:41,131 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:41,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:41,132 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:41,132 INFO L82 PathProgramCache]: Analyzing trace with hash 497742649, now seen corresponding path program 1 times [2020-09-24 18:23:41,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:41,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146834130] [2020-09-24 18:23:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:41,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:46,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-24 18:23:46,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:23:46,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 18:23:46,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 18:23:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:23:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:46,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:46,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:46,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:46,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:46,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:23:46,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:46,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:46,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:46,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:46,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:23:46,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:46,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 18:23:46,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 18:23:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:46,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 18:23:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:46,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:46,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:23:46,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 18:23:46,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:23:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:46,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146834130] [2020-09-24 18:23:46,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:46,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:46,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977816364] [2020-09-24 18:23:46,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:46,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:46,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:46,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:46,510 INFO L87 Difference]: Start difference. First operand 3439 states and 4306 transitions. Second operand 7 states.