/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=0.1 --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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:22,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:22,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:22,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:22,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:22,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:22,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:22,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:22,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:22,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:22,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:22,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:22,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:22,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:22,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:22,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:22,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:22,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:22,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:22,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:22,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:22,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:22,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:22,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:22,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:22,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:22,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:22,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:22,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:22,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:22,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:22,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:22,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:22,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:22,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:22,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:22,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:22,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:22,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:22,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:22,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:22,184 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 10:11:22,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:22,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:22,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:22,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:22,236 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:22,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:22,237 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:22,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:22,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:22,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:22,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:22,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:22,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:22,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:22,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:22,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:22,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:22,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:22,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:22,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:22,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:22,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:22,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:22,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:22,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:22,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:22,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:22,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:22,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:22,243 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:11:22,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:22,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:22,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:22,721 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:22,721 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:22,723 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 10:11:22,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63789cff4/6cdbac8eb2324ceb893d47f9024f1777/FLAG686953961 [2020-09-25 10:11:23,453 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:23,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 10:11:23,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63789cff4/6cdbac8eb2324ceb893d47f9024f1777/FLAG686953961 [2020-09-25 10:11:23,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63789cff4/6cdbac8eb2324ceb893d47f9024f1777 [2020-09-25 10:11:23,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:23,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:23,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:23,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:23,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:23,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:23" (1/1) ... [2020-09-25 10:11:23,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:23, skipping insertion in model container [2020-09-25 10:11:23,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:23" (1/1) ... [2020-09-25 10:11:23,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:23,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:24,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:24,305 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:24,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:24,553 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:24,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24 WrapperNode [2020-09-25 10:11:24,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:24,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:24,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:24,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:24,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:24,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:24,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:24,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:24,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (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 10:11:24,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:24,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:24,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:24,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:11:26,224 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:11:26,225 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:11:26,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:26 BoogieIcfgContainer [2020-09-25 10:11:26,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:11:26,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:11:26,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:11:26,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:11:26,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:23" (1/3) ... [2020-09-25 10:11:26,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:26, skipping insertion in model container [2020-09-25 10:11:26,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (2/3) ... [2020-09-25 10:11:26,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:26, skipping insertion in model container [2020-09-25 10:11:26,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:26" (3/3) ... [2020-09-25 10:11:26,246 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label08.c [2020-09-25 10:11:26,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:11:26,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:11:26,292 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:11:26,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:11:26,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:11:26,328 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:11:26,329 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:11:26,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:11:26,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:11:26,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:11:26,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:11:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:11:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 10:11:26,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:26,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:26,374 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:26,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:26,382 INFO L82 PathProgramCache]: Analyzing trace with hash -938747945, now seen corresponding path program 1 times [2020-09-25 10:11:26,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:26,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982380634] [2020-09-25 10:11:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:26,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:27,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:27,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 10:11:27,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:27,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 866 [2020-09-25 10:11:27,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:27,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:27,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 10:11:27,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:11:27,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:27,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:27,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:27,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:27,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:27,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 10:11:27,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:27,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:27,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:27,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:27,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:27,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:27,676 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 10:11:27,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982380634] [2020-09-25 10:11:27,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:27,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:11:27,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996795063] [2020-09-25 10:11:27,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:11:27,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:27,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:11:27,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:11:27,712 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 10:11:30,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:30,417 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 10:11:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:11:30,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-09-25 10:11:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:30,448 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 10:11:30,448 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 10:11:30,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:30,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 10:11:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 10:11:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 10:11:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 10:11:30,574 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 59 [2020-09-25 10:11:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:30,575 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 10:11:30,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:11:30,575 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 10:11:30,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 10:11:30,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:30,590 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:30,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:30,591 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:30,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:30,591 INFO L82 PathProgramCache]: Analyzing trace with hash -899949441, now seen corresponding path program 1 times [2020-09-25 10:11:30,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:30,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644117733] [2020-09-25 10:11:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:30,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:35,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 10:11:35,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:35,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:11:35,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:35,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 10:11:35,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:35,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:35,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:35,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:35,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:11:35,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:35,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:35,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:36,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:36,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:36,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 10:11:36,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:36,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-09-25 10:11:36,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:36,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 10:11:36,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:36,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644117733] [2020-09-25 10:11:36,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:36,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:11:36,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130124805] [2020-09-25 10:11:36,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:11:36,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:36,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:11:36,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:11:36,618 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 10 states. [2020-09-25 10:11:39,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:39,902 INFO L93 Difference]: Finished difference Result 1898 states and 2627 transitions. [2020-09-25 10:11:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:39,904 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 188 [2020-09-25 10:11:39,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:39,912 INFO L225 Difference]: With dead ends: 1898 [2020-09-25 10:11:39,912 INFO L226 Difference]: Without dead ends: 1194 [2020-09-25 10:11:39,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:11:39,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-09-25 10:11:39,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1000. [2020-09-25 10:11:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-09-25 10:11:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1282 transitions. [2020-09-25 10:11:39,992 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1282 transitions. Word has length 188 [2020-09-25 10:11:39,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:39,997 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1282 transitions. [2020-09-25 10:11:39,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:11:39,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1282 transitions. [2020-09-25 10:11:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 10:11:40,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:40,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:40,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:40,014 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:40,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:40,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1891490353, now seen corresponding path program 1 times [2020-09-25 10:11:40,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:40,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133952231] [2020-09-25 10:11:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:40,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:40,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:40,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:42,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:44,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:45,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 10:11:45,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:45,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-09-25 10:11:45,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:45,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:45,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:45,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-09-25 10:11:45,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:45,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:45,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:45,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:45,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:45,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:11:45,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:45,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:45,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:45,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:45,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 10:11:45,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:45,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 10:11:45,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:45,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:45,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 10:11:45,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:45,742 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:45,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133952231] [2020-09-25 10:11:45,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:45,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:45,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986539020] [2020-09-25 10:11:45,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:45,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:45,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:45,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:45,745 INFO L87 Difference]: Start difference. First operand 1000 states and 1282 transitions. Second operand 8 states. [2020-09-25 10:11:49,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:49,193 INFO L93 Difference]: Finished difference Result 2538 states and 3323 transitions. [2020-09-25 10:11:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:11:49,194 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 195 [2020-09-25 10:11:49,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:49,204 INFO L225 Difference]: With dead ends: 2538 [2020-09-25 10:11:49,204 INFO L226 Difference]: Without dead ends: 1553 [2020-09-25 10:11:49,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2020-09-25 10:11:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1347. [2020-09-25 10:11:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2020-09-25 10:11:49,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1710 transitions. [2020-09-25 10:11:49,275 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1710 transitions. Word has length 195 [2020-09-25 10:11:49,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:49,277 INFO L479 AbstractCegarLoop]: Abstraction has 1347 states and 1710 transitions. [2020-09-25 10:11:49,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:11:49,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1710 transitions. [2020-09-25 10:11:49,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-25 10:11:49,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:49,287 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:11:49,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:49,287 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:49,288 INFO L82 PathProgramCache]: Analyzing trace with hash 266332152, now seen corresponding path program 1 times [2020-09-25 10:11:49,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:49,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266864937] [2020-09-25 10:11:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:49,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:49,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:49,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:54,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-09-25 10:11:54,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:54,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:11:54,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:54,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:54,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-09-25 10:11:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:54,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:54,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:54,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:54,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:54,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:11:54,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:54,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:54,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:54,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:54,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:54,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:11:54,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:54,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 10:11:54,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:54,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:11:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:11:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:54,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:55,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:55,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 10:11:55,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:55,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-25 10:11:55,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:55,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:55,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:55,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:55,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 10:11:55,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 89 proven. 65 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 10:11:55,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266864937] [2020-09-25 10:11:55,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:55,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:55,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725729594] [2020-09-25 10:11:55,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:55,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:55,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:55,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:55,384 INFO L87 Difference]: Start difference. First operand 1347 states and 1710 transitions. Second operand 8 states. [2020-09-25 10:11:57,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:57,997 INFO L93 Difference]: Finished difference Result 3322 states and 4609 transitions. [2020-09-25 10:11:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:57,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 273 [2020-09-25 10:11:57,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:58,017 INFO L225 Difference]: With dead ends: 3322 [2020-09-25 10:11:58,018 INFO L226 Difference]: Without dead ends: 1990 [2020-09-25 10:11:58,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:11:58,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2020-09-25 10:11:58,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1670. [2020-09-25 10:11:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1670 states. [2020-09-25 10:11:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2080 transitions. [2020-09-25 10:11:58,120 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2080 transitions. Word has length 273 [2020-09-25 10:11:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:58,121 INFO L479 AbstractCegarLoop]: Abstraction has 1670 states and 2080 transitions. [2020-09-25 10:11:58,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:11:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2080 transitions. [2020-09-25 10:11:58,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-09-25 10:11:58,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:58,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:11:58,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:58,131 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:58,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:58,132 INFO L82 PathProgramCache]: Analyzing trace with hash 463482390, now seen corresponding path program 1 times [2020-09-25 10:11:58,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:58,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29183788] [2020-09-25 10:11:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:58,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:03,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-09-25 10:12:03,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:03,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 10:12:03,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:03,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:03,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:12:03,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:03,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 10:12:03,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:03,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:03,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:03,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:03,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:03,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:12:03,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:03,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:03,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:03,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:03,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:03,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:03,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 10:12:03,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:03,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:12:03,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:03,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 10:12:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:03,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:04,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:04,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 10:12:04,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-25 10:12:04,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:04,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 10:12:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:12:04,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29183788] [2020-09-25 10:12:04,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:04,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:12:04,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090223362] [2020-09-25 10:12:04,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:12:04,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:04,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:12:04,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:12:04,252 INFO L87 Difference]: Start difference. First operand 1670 states and 2080 transitions. Second operand 10 states. [2020-09-25 10:12:07,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:07,970 INFO L93 Difference]: Finished difference Result 3519 states and 4655 transitions. [2020-09-25 10:12:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:12:07,971 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 283 [2020-09-25 10:12:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:07,985 INFO L225 Difference]: With dead ends: 3519 [2020-09-25 10:12:07,985 INFO L226 Difference]: Without dead ends: 2168 [2020-09-25 10:12:07,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:12:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2020-09-25 10:12:08,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2102. [2020-09-25 10:12:08,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2102 states. [2020-09-25 10:12:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 2588 transitions. [2020-09-25 10:12:08,068 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 2588 transitions. Word has length 283 [2020-09-25 10:12:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:08,069 INFO L479 AbstractCegarLoop]: Abstraction has 2102 states and 2588 transitions. [2020-09-25 10:12:08,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:12:08,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 2588 transitions. [2020-09-25 10:12:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-09-25 10:12:08,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:08,078 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 10:12:08,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:08,079 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:08,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:08,079 INFO L82 PathProgramCache]: Analyzing trace with hash -429680418, now seen corresponding path program 1 times [2020-09-25 10:12:08,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:08,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135484062] [2020-09-25 10:12:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:08,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:08,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:08,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:08,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking...