/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:19,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:19,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:19,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:19,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:19,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:19,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:19,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:19,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:19,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:19,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:19,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:19,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:19,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:19,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:19,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:19,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:19,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:19,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:19,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:19,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:19,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:19,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:19,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:19,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:19,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:19,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:19,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:19,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:19,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:19,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:19,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:19,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:19,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:19,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:19,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:19,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:19,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:19,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:19,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:19,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:19,610 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:42:19,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:19,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:19,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:19,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:19,668 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:19,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:19,669 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:19,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:19,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:19,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:19,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:19,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:19,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:19,672 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:19,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:19,672 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:19,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:19,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:19,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:19,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:19,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:19,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:19,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:19,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:19,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:19,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:19,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:19,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:19,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:19,675 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:42:20,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:20,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:20,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:20,204 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:20,204 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:20,205 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-09-25 14:42:20,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/705a716fb/01926722d9214ebb827e9409402602bc/FLAGd4c51982d [2020-09-25 14:42:20,981 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:20,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-09-25 14:42:20,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/705a716fb/01926722d9214ebb827e9409402602bc/FLAGd4c51982d [2020-09-25 14:42:21,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/705a716fb/01926722d9214ebb827e9409402602bc [2020-09-25 14:42:21,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:42:21,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:42:21,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:21,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:42:21,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:42:21,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:21" (1/1) ... [2020-09-25 14:42:21,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:21, skipping insertion in model container [2020-09-25 14:42:21,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:21" (1/1) ... [2020-09-25 14:42:21,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:42:21,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:42:21,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:21,835 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:42:22,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:22,054 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:42:22,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:22 WrapperNode [2020-09-25 14:42:22,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:22,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:42:22,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:42:22,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:42:22,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:22" (1/1) ... [2020-09-25 14:42:22,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:22" (1/1) ... [2020-09-25 14:42:22,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:22" (1/1) ... [2020-09-25 14:42:22,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:22" (1/1) ... [2020-09-25 14:42:22,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:22" (1/1) ... [2020-09-25 14:42:22,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:22" (1/1) ... [2020-09-25 14:42:22,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:22" (1/1) ... [2020-09-25 14:42:22,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:42:22,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:42:22,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:42:22,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:42:22,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:42:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:42:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:42:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:42:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:42:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:42:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:42:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:42:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:42:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:42:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:42:23,774 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:42:23,775 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:42:23,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:23 BoogieIcfgContainer [2020-09-25 14:42:23,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:42:23,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:42:23,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:42:23,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:42:23,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:42:21" (1/3) ... [2020-09-25 14:42:23,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:23, skipping insertion in model container [2020-09-25 14:42:23,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:22" (2/3) ... [2020-09-25 14:42:23,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:23, skipping insertion in model container [2020-09-25 14:42:23,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:23" (3/3) ... [2020-09-25 14:42:23,794 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label34.c [2020-09-25 14:42:23,807 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:42:23,819 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:42:23,845 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:42:23,890 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:42:23,891 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:42:23,892 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:42:23,892 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:42:23,892 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:42:23,892 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:42:23,892 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:42:23,892 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:42:23,940 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:42:23,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 14:42:23,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:23,960 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] [2020-09-25 14:42:23,960 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:23,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:23,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1489035705, now seen corresponding path program 1 times [2020-09-25 14:42:23,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:23,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 14:42:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:24,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:25,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 14:42:25,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:42:25,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1372 [2020-09-25 14:42:25,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:25,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:42:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:42:25,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:25,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:25,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:25,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:42:25,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:25,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:25,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:25,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:25,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 14:42:25,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:25,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:42:25,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739470649] [2020-09-25 14:42:25,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:42:25,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:25,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:42:25,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:42:25,812 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:42:27,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:27,929 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 14:42:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:42:27,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-09-25 14:42:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:27,957 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 14:42:27,958 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 14:42:27,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:27,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 14:42:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 14:42:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 14:42:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 14:42:28,065 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 82 [2020-09-25 14:42:28,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:28,066 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 14:42:28,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:42:28,067 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 14:42:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 14:42:28,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:28,077 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, 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] [2020-09-25 14:42:28,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:28,077 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:28,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:28,080 INFO L82 PathProgramCache]: Analyzing trace with hash 618223824, now seen corresponding path program 1 times [2020-09-25 14:42:28,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:28,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785090538] [2020-09-25 14:42:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:28,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:30,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:30,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 14:42:30,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:42:30,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1894 [2020-09-25 14:42:30,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:30,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:30,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:30,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:30,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:42:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:30,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:30,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:30,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:30,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:30,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 14:42:30,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:30,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:30,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:30,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:30,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:30,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:42:30,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 14:42:30,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:30,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:30,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:30,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785090538] [2020-09-25 14:42:30,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:30,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:30,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212913378] [2020-09-25 14:42:30,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:30,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:30,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:30,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:30,551 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 14:42:32,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:32,932 INFO L93 Difference]: Finished difference Result 1475 states and 1880 transitions. [2020-09-25 14:42:32,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:42:32,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 14:42:32,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:32,941 INFO L225 Difference]: With dead ends: 1475 [2020-09-25 14:42:32,941 INFO L226 Difference]: Without dead ends: 947 [2020-09-25 14:42:32,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:42:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-09-25 14:42:32,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 888. [2020-09-25 14:42:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-09-25 14:42:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1122 transitions. [2020-09-25 14:42:32,995 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1122 transitions. Word has length 162 [2020-09-25 14:42:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:32,995 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1122 transitions. [2020-09-25 14:42:32,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:32,996 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1122 transitions. [2020-09-25 14:42:33,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 14:42:33,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:33,000 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, 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] [2020-09-25 14:42:33,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:33,001 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:33,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:33,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1039213483, now seen corresponding path program 1 times [2020-09-25 14:42:33,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:33,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554587733] [2020-09-25 14:42:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:35,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:38,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 14:42:38,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:42:38,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 14:42:38,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:38,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:42:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:42:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 14:42:38,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:38,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:38,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:38,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:38,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:42:38,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:38,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:42:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:42:38,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:38,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:38,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:38,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:38,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:38,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 14:42:38,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:38,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 14:42:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:38,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554587733] [2020-09-25 14:42:38,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:38,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:42:38,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458260856] [2020-09-25 14:42:38,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:42:38,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:38,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:42:38,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:38,759 INFO L87 Difference]: Start difference. First operand 888 states and 1122 transitions. Second operand 12 states. [2020-09-25 14:42:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:41,672 INFO L93 Difference]: Finished difference Result 2470 states and 3245 transitions. [2020-09-25 14:42:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:42:41,673 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 171 [2020-09-25 14:42:41,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:41,691 INFO L225 Difference]: With dead ends: 2470 [2020-09-25 14:42:41,692 INFO L226 Difference]: Without dead ends: 1528 [2020-09-25 14:42:41,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:42:41,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2020-09-25 14:42:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1498. [2020-09-25 14:42:41,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1498 states. [2020-09-25 14:42:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 1855 transitions. [2020-09-25 14:42:41,780 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 1855 transitions. Word has length 171 [2020-09-25 14:42:41,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:41,781 INFO L479 AbstractCegarLoop]: Abstraction has 1498 states and 1855 transitions. [2020-09-25 14:42:41,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:42:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 1855 transitions. [2020-09-25 14:42:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 14:42:41,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:41,790 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, 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] [2020-09-25 14:42:41,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:41,790 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:41,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:41,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1276415705, now seen corresponding path program 1 times [2020-09-25 14:42:41,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:41,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792855721] [2020-09-25 14:42:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:41,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:44,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:46,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:46,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:46,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 14:42:46,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 14:42:46,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:46,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 14:42:46,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:46,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:46,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:46,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:46,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:46,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:46,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:42:46,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:46,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:42:46,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:47,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:47,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:47,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 14:42:47,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:47,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 14:42:47,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:47,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 14:42:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:47,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792855721] [2020-09-25 14:42:47,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:47,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:47,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586487432] [2020-09-25 14:42:47,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:47,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:47,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:47,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:47,259 INFO L87 Difference]: Start difference. First operand 1498 states and 1855 transitions. Second operand 7 states. [2020-09-25 14:42:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:49,863 INFO L93 Difference]: Finished difference Result 3671 states and 4766 transitions. [2020-09-25 14:42:49,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:49,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-25 14:42:49,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:49,876 INFO L225 Difference]: With dead ends: 3671 [2020-09-25 14:42:49,876 INFO L226 Difference]: Without dead ends: 2188 [2020-09-25 14:42:49,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2020-09-25 14:42:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2132. [2020-09-25 14:42:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2020-09-25 14:42:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2599 transitions. [2020-09-25 14:42:49,950 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2599 transitions. Word has length 190 [2020-09-25 14:42:49,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:49,950 INFO L479 AbstractCegarLoop]: Abstraction has 2132 states and 2599 transitions. [2020-09-25 14:42:49,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2599 transitions. [2020-09-25 14:42:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-25 14:42:49,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:49,958 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:42:49,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:49,959 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:49,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:49,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1897097815, now seen corresponding path program 1 times [2020-09-25 14:42:49,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:49,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436591926] [2020-09-25 14:42:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:50,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:51,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:53,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:55,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-25 14:42:55,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:42:55,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:42:55,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:55,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:55,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:42:55,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:42:55,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 14:42:55,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:55,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:55,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:55,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:42:55,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:55,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:55,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:55,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:55,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:55,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:55,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 14:42:55,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:55,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:42:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:55,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:55,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:55,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 14:42:55,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:55,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-25 14:42:55,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:55,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:55,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:55,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:55,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:42:55,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 140 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:42:55,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436591926] [2020-09-25 14:42:55,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:55,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:42:55,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808880073] [2020-09-25 14:42:55,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:42:55,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:55,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:42:55,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:42:55,854 INFO L87 Difference]: Start difference. First operand 2132 states and 2599 transitions. Second operand 10 states. [2020-09-25 14:43:00,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:00,590 INFO L93 Difference]: Finished difference Result 5435 states and 6890 transitions. [2020-09-25 14:43:00,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:43:00,591 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 269 [2020-09-25 14:43:00,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:00,611 INFO L225 Difference]: With dead ends: 5435 [2020-09-25 14:43:00,611 INFO L226 Difference]: Without dead ends: 3421 [2020-09-25 14:43:00,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:43:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2020-09-25 14:43:00,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 3234. [2020-09-25 14:43:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2020-09-25 14:43:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 3980 transitions. [2020-09-25 14:43:00,713 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 3980 transitions. Word has length 269 [2020-09-25 14:43:00,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:00,714 INFO L479 AbstractCegarLoop]: Abstraction has 3234 states and 3980 transitions. [2020-09-25 14:43:00,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:43:00,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 3980 transitions. [2020-09-25 14:43:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-09-25 14:43:00,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:00,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:00,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:00,724 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:00,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:00,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1460643322, now seen corresponding path program 1 times [2020-09-25 14:43:00,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:00,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269481176] [2020-09-25 14:43:00,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:02,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:02,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:03,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:04,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:04,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:05,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-09-25 14:43:05,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:43:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 14:43:05,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:05,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-09-25 14:43:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-09-25 14:43:05,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:05,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:05,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:05,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:05,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:43:05,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:05,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:05,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:05,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:05,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:43:05,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:05,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 14:43:05,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:05,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:43:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:05,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 14:43:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:06,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:06,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 14:43:06,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:06,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 14:43:06,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:06,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 14:43:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-09-25 14:43:06,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269481176] [2020-09-25 14:43:06,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:06,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:43:06,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490526671] [2020-09-25 14:43:06,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:06,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:06,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:06,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:06,168 INFO L87 Difference]: Start difference. First operand 3234 states and 3980 transitions. Second operand 5 states. [2020-09-25 14:43:08,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:08,287 INFO L93 Difference]: Finished difference Result 6925 states and 8758 transitions. [2020-09-25 14:43:08,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:43:08,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-09-25 14:43:08,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:08,306 INFO L225 Difference]: With dead ends: 6925 [2020-09-25 14:43:08,306 INFO L226 Difference]: Without dead ends: 3856 [2020-09-25 14:43:08,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:43:08,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3856 states. [2020-09-25 14:43:08,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3856 to 3540. [2020-09-25 14:43:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3540 states. [2020-09-25 14:43:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4291 transitions. [2020-09-25 14:43:08,423 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4291 transitions. Word has length 285 [2020-09-25 14:43:08,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:08,424 INFO L479 AbstractCegarLoop]: Abstraction has 3540 states and 4291 transitions. [2020-09-25 14:43:08,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4291 transitions. [2020-09-25 14:43:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-25 14:43:08,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:08,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:08,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:43:08,437 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:08,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:08,438 INFO L82 PathProgramCache]: Analyzing trace with hash 2147181488, now seen corresponding path program 1 times [2020-09-25 14:43:08,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:08,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757479518] [2020-09-25 14:43:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:08,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking...