/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=0.2 --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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:56,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:56,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:56,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:56,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:56,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:56,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:56,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:56,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:56,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:56,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:56,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:56,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:56,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:56,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:56,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:56,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:56,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:56,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:56,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:56,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:56,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:56,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:56,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:56,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:56,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:56,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:56,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:56,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:56,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:56,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:56,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:56,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:56,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:56,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:56,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:56,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:56,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:56,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:56,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:56,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:56,761 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 11:18:56,787 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:56,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:56,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:56,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:56,789 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:56,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:56,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:56,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:56,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:56,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:56,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:56,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:56,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:56,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:56,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:56,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:56,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:56,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:56,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:56,792 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:56,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:56,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:56,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:56,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:56,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:56,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:56,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:56,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:56,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:56,794 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:18:57,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:57,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:57,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:57,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:57,278 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:57,279 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 11:18:57,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb4325780/13ad93744048441a9e30161f7cdd4cf6/FLAG6def391a4 [2020-09-25 11:18:58,042 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:58,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 11:18:58,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb4325780/13ad93744048441a9e30161f7cdd4cf6/FLAG6def391a4 [2020-09-25 11:18:58,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb4325780/13ad93744048441a9e30161f7cdd4cf6 [2020-09-25 11:18:58,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:58,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:58,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:58,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:58,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:58,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:58" (1/1) ... [2020-09-25 11:18:58,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73111a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58, skipping insertion in model container [2020-09-25 11:18:58,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:58" (1/1) ... [2020-09-25 11:18:58,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:58,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:58,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:58,828 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:59,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:59,048 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:59,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:59 WrapperNode [2020-09-25 11:18:59,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:59,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:59,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:59,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:59,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:59" (1/1) ... [2020-09-25 11:18:59,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:59" (1/1) ... [2020-09-25 11:18:59,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:59" (1/1) ... [2020-09-25 11:18:59,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:59" (1/1) ... [2020-09-25 11:18:59,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:59" (1/1) ... [2020-09-25 11:18:59,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:59" (1/1) ... [2020-09-25 11:18:59,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:59" (1/1) ... [2020-09-25 11:18:59,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:59,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:59,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:59,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:59,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:59" (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 [2020-09-25 11:18:59,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:59,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:59,263 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:59,263 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:00,670 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:00,670 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:00,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:00 BoogieIcfgContainer [2020-09-25 11:19:00,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:00,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:00,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:00,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:00,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:58" (1/3) ... [2020-09-25 11:19:00,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bd88af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:00, skipping insertion in model container [2020-09-25 11:19:00,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:59" (2/3) ... [2020-09-25 11:19:00,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bd88af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:00, skipping insertion in model container [2020-09-25 11:19:00,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:00" (3/3) ... [2020-09-25 11:19:00,689 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-25 11:19:00,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:00,711 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:00,733 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:00,767 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:00,767 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:00,767 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:00,767 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:00,767 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:00,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:00,768 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:00,768 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:00,799 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:00,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 11:19:00,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:00,810 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] [2020-09-25 11:19:00,811 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:00,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:00,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-25 11:19:00,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:00,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40381182] [2020-09-25 11:19:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:01,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:02,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:02,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:19:02,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:02,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-25 11:19:02,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:02,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:19:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:19:02,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:02,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:02,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:02,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:02,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:02,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:19:02,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:02,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:02,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:02,214 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 11:19:02,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40381182] [2020-09-25 11:19:02,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:02,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:19:02,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665193679] [2020-09-25 11:19:02,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:19:02,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:02,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:19:02,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:19:02,249 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:19:04,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:04,476 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 11:19:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:19:04,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 11:19:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:04,501 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 11:19:04,501 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 11:19:04,515 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 11:19:04,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 11:19:04,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 11:19:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 11:19:04,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 11:19:04,616 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-25 11:19:04,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:04,617 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 11:19:04,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:19:04,617 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 11:19:04,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 11:19:04,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:04,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:04,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:04,626 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:04,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:04,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-25 11:19:04,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:04,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628819765] [2020-09-25 11:19:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:05,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:09,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:09,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 11:19:09,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:19:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 11:19:09,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:09,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:19:09,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:19:09,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:19:09,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:09,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:09,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:09,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:09,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:09,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:19:09,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:09,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:09,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:09,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:09,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:09,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:10,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:10,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:19:10,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:10,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 11:19:10,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:10,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 11:19:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:10,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628819765] [2020-09-25 11:19:10,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:10,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:19:10,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680615907] [2020-09-25 11:19:10,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:19:10,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:10,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:19:10,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:19:10,432 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 9 states. [2020-09-25 11:19:14,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:14,135 INFO L93 Difference]: Finished difference Result 1663 states and 2148 transitions. [2020-09-25 11:19:14,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:19:14,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-09-25 11:19:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:14,144 INFO L225 Difference]: With dead ends: 1663 [2020-09-25 11:19:14,144 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 11:19:14,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:19:14,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 11:19:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1032. [2020-09-25 11:19:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-09-25 11:19:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1253 transitions. [2020-09-25 11:19:14,227 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1253 transitions. Word has length 129 [2020-09-25 11:19:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:14,229 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1253 transitions. [2020-09-25 11:19:14,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:19:14,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1253 transitions. [2020-09-25 11:19:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 11:19:14,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:14,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:14,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:14,242 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:14,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:14,243 INFO L82 PathProgramCache]: Analyzing trace with hash 677426997, now seen corresponding path program 1 times [2020-09-25 11:19:14,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:14,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925305053] [2020-09-25 11:19:14,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:14,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:14,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:16,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 11:19:16,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2127 [2020-09-25 11:19:16,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:16,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:16,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:16,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 11:19:16,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:16,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:16,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:16,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:16,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:16,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:19:16,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:16,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:16,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:16,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:16,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:16,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:19:16,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:16,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 11:19:16,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:16,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:16,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:16,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:16,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:19:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:19:16,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925305053] [2020-09-25 11:19:16,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:16,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:19:16,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885120931] [2020-09-25 11:19:16,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:16,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:16,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:16,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:16,737 INFO L87 Difference]: Start difference. First operand 1032 states and 1253 transitions. Second operand 5 states. [2020-09-25 11:19:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:18,407 INFO L93 Difference]: Finished difference Result 2819 states and 3540 transitions. [2020-09-25 11:19:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:19:18,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 11:19:18,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:18,422 INFO L225 Difference]: With dead ends: 2819 [2020-09-25 11:19:18,423 INFO L226 Difference]: Without dead ends: 1802 [2020-09-25 11:19:18,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 11:19:18,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2020-09-25 11:19:18,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1642. [2020-09-25 11:19:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2020-09-25 11:19:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2038 transitions. [2020-09-25 11:19:18,512 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2038 transitions. Word has length 129 [2020-09-25 11:19:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:18,513 INFO L479 AbstractCegarLoop]: Abstraction has 1642 states and 2038 transitions. [2020-09-25 11:19:18,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:19:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2038 transitions. [2020-09-25 11:19:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 11:19:18,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:18,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:18,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:19:18,516 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:18,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:18,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2104953989, now seen corresponding path program 1 times [2020-09-25 11:19:18,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:18,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664015064] [2020-09-25 11:19:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:18,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:20,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:23,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:23,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 11:19:23,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:19:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4822 [2020-09-25 11:19:23,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:23,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 11:19:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:23,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:23,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:23,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:23,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:23,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:19:23,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:23,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:23,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:23,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:23,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:23,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:23,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:23,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:23,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 11:19:23,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:23,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:23,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:23,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:23,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:23,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:23,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664015064] [2020-09-25 11:19:23,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:23,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:19:23,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066664261] [2020-09-25 11:19:23,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:23,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:23,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:23,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:23,715 INFO L87 Difference]: Start difference. First operand 1642 states and 2038 transitions. Second operand 8 states. [2020-09-25 11:19:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:27,135 INFO L93 Difference]: Finished difference Result 3912 states and 5068 transitions. [2020-09-25 11:19:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:19:27,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2020-09-25 11:19:27,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:27,154 INFO L225 Difference]: With dead ends: 3912 [2020-09-25 11:19:27,154 INFO L226 Difference]: Without dead ends: 2285 [2020-09-25 11:19:27,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:19:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-09-25 11:19:27,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2165. [2020-09-25 11:19:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2165 states. [2020-09-25 11:19:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 2692 transitions. [2020-09-25 11:19:27,254 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 2692 transitions. Word has length 135 [2020-09-25 11:19:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:27,256 INFO L479 AbstractCegarLoop]: Abstraction has 2165 states and 2692 transitions. [2020-09-25 11:19:27,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 2692 transitions. [2020-09-25 11:19:27,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 11:19:27,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:27,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:27,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:27,259 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:27,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:27,260 INFO L82 PathProgramCache]: Analyzing trace with hash -431173929, now seen corresponding path program 1 times [2020-09-25 11:19:27,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:27,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618073931] [2020-09-25 11:19:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:28,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:30,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 11:19:30,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:19:30,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3465 [2020-09-25 11:19:30,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:30,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:30,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:19:30,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:30,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 11:19:30,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:30,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:30,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:30,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:30,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:30,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:19:30,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:30,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:30,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:30,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:30,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:30,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:30,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:31,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:31,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:31,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 11:19:31,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:31,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-09-25 11:19:31,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:31,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:31,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:19:31,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:31,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 11:19:31,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:32,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618073931] [2020-09-25 11:19:32,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:32,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:19:32,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678683507] [2020-09-25 11:19:32,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:19:32,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:32,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:19:32,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:19:32,174 INFO L87 Difference]: Start difference. First operand 2165 states and 2692 transitions. Second operand 12 states. [2020-09-25 11:19:35,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:35,048 INFO L93 Difference]: Finished difference Result 3870 states and 4873 transitions. [2020-09-25 11:19:35,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:19:35,049 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 154 [2020-09-25 11:19:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:35,061 INFO L225 Difference]: With dead ends: 3870 [2020-09-25 11:19:35,061 INFO L226 Difference]: Without dead ends: 2208 [2020-09-25 11:19:35,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:19:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2020-09-25 11:19:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2179. [2020-09-25 11:19:35,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2179 states. [2020-09-25 11:19:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 2720 transitions. [2020-09-25 11:19:35,138 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 2720 transitions. Word has length 154 [2020-09-25 11:19:35,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:35,139 INFO L479 AbstractCegarLoop]: Abstraction has 2179 states and 2720 transitions. [2020-09-25 11:19:35,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:19:35,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 2720 transitions. [2020-09-25 11:19:35,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 11:19:35,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:35,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:35,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:35,142 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:35,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:35,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1743030617, now seen corresponding path program 1 times [2020-09-25 11:19:35,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:35,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665224074] [2020-09-25 11:19:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:35,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:39,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 11:19:39,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:39,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4001 [2020-09-25 11:19:39,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:39,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:39,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:19:39,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:39,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:39,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:39,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:39,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:19:39,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:39,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:39,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:39,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:39,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 11:19:39,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:39,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 11:19:39,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:39,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:39,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:39,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 11:19:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:39,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665224074] [2020-09-25 11:19:39,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:39,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:19:39,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645584654] [2020-09-25 11:19:39,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:39,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:39,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:39,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:39,676 INFO L87 Difference]: Start difference. First operand 2179 states and 2720 transitions. Second operand 7 states. [2020-09-25 11:19:42,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:42,005 INFO L93 Difference]: Finished difference Result 5184 states and 6838 transitions. [2020-09-25 11:19:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:19:42,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 168 [2020-09-25 11:19:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:42,026 INFO L225 Difference]: With dead ends: 5184 [2020-09-25 11:19:42,026 INFO L226 Difference]: Without dead ends: 3182 [2020-09-25 11:19:42,035 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 11:19:42,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3182 states. [2020-09-25 11:19:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3182 to 3096. [2020-09-25 11:19:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3096 states. [2020-09-25 11:19:42,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 3796 transitions. [2020-09-25 11:19:42,124 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 3796 transitions. Word has length 168 [2020-09-25 11:19:42,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:42,125 INFO L479 AbstractCegarLoop]: Abstraction has 3096 states and 3796 transitions. [2020-09-25 11:19:42,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:42,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 3796 transitions. [2020-09-25 11:19:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 11:19:42,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:42,130 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:42,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:19:42,130 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:42,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:42,131 INFO L82 PathProgramCache]: Analyzing trace with hash 392819605, now seen corresponding path program 1 times [2020-09-25 11:19:42,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:42,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150454882] [2020-09-25 11:19:42,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:42,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:43,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking...