/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_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:51,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:51,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:51,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:51,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:51,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:51,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:51,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:51,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:51,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:51,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:51,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:51,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:51,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:51,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:51,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:51,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:51,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:51,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:51,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:51,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:51,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:51,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:51,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:51,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:51,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:51,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:51,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:51,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:51,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:51,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:51,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:51,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:51,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:51,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:51,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:51,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:51,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:51,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:51,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:51,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:51,760 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 14:41:51,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:51,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:51,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:51,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:51,788 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:51,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:51,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:51,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:51,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:51,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:51,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:51,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:51,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:51,790 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:51,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:51,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:51,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:51,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:51,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:51,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:51,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:51,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:51,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:51,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:51,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:51,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:51,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:51,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:51,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:51,794 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=0.5;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 14:41:52,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:52,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:52,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:52,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:52,338 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:52,339 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 14:41:52,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5753cc36e/8f76918002694cecb50600fe1a63ac27/FLAG25a675c89 [2020-09-25 14:41:53,093 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:53,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 14:41:53,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5753cc36e/8f76918002694cecb50600fe1a63ac27/FLAG25a675c89 [2020-09-25 14:41:53,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5753cc36e/8f76918002694cecb50600fe1a63ac27 [2020-09-25 14:41:53,342 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:53,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:53,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:53,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:53,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:53,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:53" (1/1) ... [2020-09-25 14:41:53,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:53, skipping insertion in model container [2020-09-25 14:41:53,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:53" (1/1) ... [2020-09-25 14:41:53,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:53,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:53,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:53,909 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:54,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:54,174 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:54,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:54 WrapperNode [2020-09-25 14:41:54,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:54,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:54,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:54,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:54,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:54" (1/1) ... [2020-09-25 14:41:54,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:54" (1/1) ... [2020-09-25 14:41:54,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:54" (1/1) ... [2020-09-25 14:41:54,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:54" (1/1) ... [2020-09-25 14:41:54,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:54" (1/1) ... [2020-09-25 14:41:54,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:54" (1/1) ... [2020-09-25 14:41:54,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:54" (1/1) ... [2020-09-25 14:41:54,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:54,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:54,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:54,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:54,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:54" (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 14:41:54,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:54,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:54,390 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:54,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:56,165 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:56,166 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:56,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:56 BoogieIcfgContainer [2020-09-25 14:41:56,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:56,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:56,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:56,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:56,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:53" (1/3) ... [2020-09-25 14:41:56,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c00c40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:56, skipping insertion in model container [2020-09-25 14:41:56,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:54" (2/3) ... [2020-09-25 14:41:56,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c00c40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:56, skipping insertion in model container [2020-09-25 14:41:56,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:56" (3/3) ... [2020-09-25 14:41:56,184 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label20.c [2020-09-25 14:41:56,196 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:56,207 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:56,229 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:56,264 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:56,264 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:56,264 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:56,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:56,265 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:56,265 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:56,265 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:56,265 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:41:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 14:41:56,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:56,308 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] [2020-09-25 14:41:56,309 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:56,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:56,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1331013031, now seen corresponding path program 1 times [2020-09-25 14:41:56,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:56,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371907317] [2020-09-25 14:41:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:56,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:56,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 14:41:56,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:56,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-09-25 14:41:56,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:56,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:41:56,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:41:56,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:41:57,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:57,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:57,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:57,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:57,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:41:57,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:57,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:57,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:57,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:57,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:41:57,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:57,144 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 14:41:57,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371907317] [2020-09-25 14:41:57,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:57,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:41:57,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995577195] [2020-09-25 14:41:57,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:41:57,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:57,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:41:57,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:41:57,178 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:41:59,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:59,283 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 14:41:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:59,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-25 14:41:59,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:59,310 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 14:41:59,310 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 14:41:59,322 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 14:41:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 14:41:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 14:41:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 14:41:59,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 14:41:59,417 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 47 [2020-09-25 14:41:59,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:59,418 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 14:41:59,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:41:59,419 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 14:41:59,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 14:41:59,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:59,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:59,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:59,427 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:59,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:59,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1207738435, now seen corresponding path program 1 times [2020-09-25 14:41:59,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:59,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445214084] [2020-09-25 14:41:59,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:59,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:00,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:01,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:01,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 14:42:01,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:42:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1601 [2020-09-25 14:42:01,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:01,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:01,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:01,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:01,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:01,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:01,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:42:01,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:01,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:42:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:01,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:01,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:01,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:01,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:42:01,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:01,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 14:42:01,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:01,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:01,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:01,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445214084] [2020-09-25 14:42:01,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:01,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:01,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267305288] [2020-09-25 14:42:01,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:01,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:01,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:01,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:01,483 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 14:42:03,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:03,798 INFO L93 Difference]: Finished difference Result 1423 states and 1832 transitions. [2020-09-25 14:42:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:42:03,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-09-25 14:42:03,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:03,810 INFO L225 Difference]: With dead ends: 1423 [2020-09-25 14:42:03,810 INFO L226 Difference]: Without dead ends: 895 [2020-09-25 14:42:03,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:42:03,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-09-25 14:42:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 857. [2020-09-25 14:42:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-09-25 14:42:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1029 transitions. [2020-09-25 14:42:03,885 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1029 transitions. Word has length 127 [2020-09-25 14:42:03,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:03,885 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 1029 transitions. [2020-09-25 14:42:03,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:03,886 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1029 transitions. [2020-09-25 14:42:03,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 14:42:03,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:03,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:03,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:03,890 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:03,891 INFO L82 PathProgramCache]: Analyzing trace with hash 843318586, now seen corresponding path program 1 times [2020-09-25 14:42:03,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:03,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655135908] [2020-09-25 14:42:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:07,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:07,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:08,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:08,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 14:42:08,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4900 [2020-09-25 14:42:08,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:08,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:42:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 14:42:08,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:08,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:08,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:08,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:08,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:42:08,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:08,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:08,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:08,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:09,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:09,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:09,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:09,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:09,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 14:42:09,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:09,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:09,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:09,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655135908] [2020-09-25 14:42:09,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:09,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:09,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328253356] [2020-09-25 14:42:09,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:09,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:09,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:09,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:09,231 INFO L87 Difference]: Start difference. First operand 857 states and 1029 transitions. Second operand 8 states. [2020-09-25 14:42:12,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:12,813 INFO L93 Difference]: Finished difference Result 2954 states and 3752 transitions. [2020-09-25 14:42:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:12,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-09-25 14:42:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:12,835 INFO L225 Difference]: With dead ends: 2954 [2020-09-25 14:42:12,835 INFO L226 Difference]: Without dead ends: 2112 [2020-09-25 14:42:12,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:42:12,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2020-09-25 14:42:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1995. [2020-09-25 14:42:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-09-25 14:42:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2472 transitions. [2020-09-25 14:42:12,965 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2472 transitions. Word has length 136 [2020-09-25 14:42:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:12,966 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 2472 transitions. [2020-09-25 14:42:12,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2472 transitions. [2020-09-25 14:42:12,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 14:42:12,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:12,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:12,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:12,989 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:12,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:12,989 INFO L82 PathProgramCache]: Analyzing trace with hash 350854071, now seen corresponding path program 1 times [2020-09-25 14:42:12,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:12,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380550836] [2020-09-25 14:42:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:13,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:16,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:18,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:18,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 14:42:18,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:42:18,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:42:18,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:18,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 14:42:18,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:18,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:18,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:18,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:18,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:42:18,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:18,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:18,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:18,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:18,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:18,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 14:42:18,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:18,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 14:42:18,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:18,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:42:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:18,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380550836] [2020-09-25 14:42:18,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:18,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:18,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224979156] [2020-09-25 14:42:18,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:18,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:18,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:18,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:18,643 INFO L87 Difference]: Start difference. First operand 1995 states and 2472 transitions. Second operand 7 states. [2020-09-25 14:42:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:20,664 INFO L93 Difference]: Finished difference Result 4146 states and 5144 transitions. [2020-09-25 14:42:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:42:20,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-09-25 14:42:20,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:20,677 INFO L225 Difference]: With dead ends: 4146 [2020-09-25 14:42:20,677 INFO L226 Difference]: Without dead ends: 2166 [2020-09-25 14:42:20,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:42:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2020-09-25 14:42:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2153. [2020-09-25 14:42:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-09-25 14:42:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2655 transitions. [2020-09-25 14:42:20,750 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2655 transitions. Word has length 174 [2020-09-25 14:42:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:20,751 INFO L479 AbstractCegarLoop]: Abstraction has 2153 states and 2655 transitions. [2020-09-25 14:42:20,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2655 transitions. [2020-09-25 14:42:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 14:42:20,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:20,757 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:20,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:20,758 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:20,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:20,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1483242834, now seen corresponding path program 1 times [2020-09-25 14:42:20,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:20,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212339111] [2020-09-25 14:42:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:20,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:21,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:22,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:25,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 14:42:25,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:25,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4435 [2020-09-25 14:42:25,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:25,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:42:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:42:25,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:25,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:25,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:25,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:25,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:25,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:42:25,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:25,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:25,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:25,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:25,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:25,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:25,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:25,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:25,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:25,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:25,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 14:42:25,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:25,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:42:25,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:25,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:25,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:25,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:42:25,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 14:42:25,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:25,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:25,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:25,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:25,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 100 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:42:25,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212339111] [2020-09-25 14:42:25,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:25,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:42:25,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482466881] [2020-09-25 14:42:25,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:25,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:25,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:25,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:25,775 INFO L87 Difference]: Start difference. First operand 2153 states and 2655 transitions. Second operand 7 states. [2020-09-25 14:42:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:28,353 INFO L93 Difference]: Finished difference Result 5043 states and 6696 transitions. [2020-09-25 14:42:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:28,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-09-25 14:42:28,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:28,373 INFO L225 Difference]: With dead ends: 5043 [2020-09-25 14:42:28,374 INFO L226 Difference]: Without dead ends: 3055 [2020-09-25 14:42:28,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2020-09-25 14:42:28,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 2633. [2020-09-25 14:42:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2633 states. [2020-09-25 14:42:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3194 transitions. [2020-09-25 14:42:28,479 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3194 transitions. Word has length 206 [2020-09-25 14:42:28,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:28,480 INFO L479 AbstractCegarLoop]: Abstraction has 2633 states and 3194 transitions. [2020-09-25 14:42:28,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:28,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3194 transitions. [2020-09-25 14:42:28,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 14:42:28,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:28,488 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:42:28,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:42:28,489 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:28,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:28,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2022070061, now seen corresponding path program 1 times [2020-09-25 14:42:28,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:28,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375603778] [2020-09-25 14:42:28,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:28,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:33,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-25 14:42:33,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:42:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 14:42:33,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:33,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 14:42:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:42:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:42:33,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:33,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:33,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:33,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:42:33,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:33,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:33,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:33,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:33,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:33,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:33,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 14:42:33,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:33,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:33,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:33,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 14:42:33,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:33,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:42:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:33,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:34,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:34,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:42:34,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 14:42:34,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:34,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:42:34,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:42:34,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375603778] [2020-09-25 14:42:34,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:34,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:42:34,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929064339] [2020-09-25 14:42:34,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:34,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:34,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:34,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:34,246 INFO L87 Difference]: Start difference. First operand 2633 states and 3194 transitions. Second operand 7 states. [2020-09-25 14:42:36,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:36,546 INFO L93 Difference]: Finished difference Result 5736 states and 7284 transitions. [2020-09-25 14:42:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:36,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-09-25 14:42:36,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:36,565 INFO L225 Difference]: With dead ends: 5736 [2020-09-25 14:42:36,566 INFO L226 Difference]: Without dead ends: 3268 [2020-09-25 14:42:36,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 14:42:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2020-09-25 14:42:36,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 3242. [2020-09-25 14:42:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3242 states. [2020-09-25 14:42:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 3994 transitions. [2020-09-25 14:42:36,661 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 3994 transitions. Word has length 228 [2020-09-25 14:42:36,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:36,661 INFO L479 AbstractCegarLoop]: Abstraction has 3242 states and 3994 transitions. [2020-09-25 14:42:36,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 3994 transitions. [2020-09-25 14:42:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 14:42:36,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:36,667 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:42:36,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:42:36,667 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:36,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:36,668 INFO L82 PathProgramCache]: Analyzing trace with hash 467359395, now seen corresponding path program 1 times [2020-09-25 14:42:36,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:36,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778129046] [2020-09-25 14:42:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking...