/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=LOWLEXORDER --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/Problem01_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:39:16,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:39:16,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:39:16,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:39:16,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:39:16,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:39:16,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:39:16,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:39:16,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:39:16,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:39:16,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:39:16,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:39:16,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:39:16,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:39:16,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:39:16,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:39:16,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:39:16,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:39:16,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:39:16,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:39:16,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:39:16,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:39:16,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:39:16,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:39:16,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:39:16,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:39:16,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:39:16,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:39:16,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:39:16,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:39:16,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:39:16,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:39:16,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:39:16,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:39:16,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:39:16,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:39:16,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:39:16,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:39:16,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:39:16,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:39:16,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:39:16,686 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:39:16,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:39:16,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:39:16,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:39:16,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:39:16,750 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:39:16,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:39:16,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:39:16,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:39:16,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:39:16,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:39:16,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:39:16,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:39:16,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:39:16,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:39:16,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:39:16,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:39:16,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:39:16,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:39:16,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:39:16,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:39:16,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:39:16,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:39:16,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:39:16,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:39:16,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:39:16,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:39:16,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:39:16,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:39:16,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:39:16,759 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:39:17,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:39:17,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:39:17,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:39:17,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:39:17,263 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:39:17,265 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-24 21:39:17,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/062cfab4e/b4d2079bf9db45189c2c35d77483cc5b/FLAG5d81593aa [2020-09-24 21:39:18,008 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:39:18,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-24 21:39:18,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/062cfab4e/b4d2079bf9db45189c2c35d77483cc5b/FLAG5d81593aa [2020-09-24 21:39:18,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/062cfab4e/b4d2079bf9db45189c2c35d77483cc5b [2020-09-24 21:39:18,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:39:18,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:39:18,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:39:18,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:39:18,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:39:18,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:39:18" (1/1) ... [2020-09-24 21:39:18,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5264e6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:18, skipping insertion in model container [2020-09-24 21:39:18,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:39:18" (1/1) ... [2020-09-24 21:39:18,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:39:18,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:39:18,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:39:18,886 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:39:19,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:39:19,139 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:39:19,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:19 WrapperNode [2020-09-24 21:39:19,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:39:19,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:39:19,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:39:19,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:39:19,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:19" (1/1) ... [2020-09-24 21:39:19,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:19" (1/1) ... [2020-09-24 21:39:19,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:19" (1/1) ... [2020-09-24 21:39:19,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:19" (1/1) ... [2020-09-24 21:39:19,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:19" (1/1) ... [2020-09-24 21:39:19,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:19" (1/1) ... [2020-09-24 21:39:19,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:19" (1/1) ... [2020-09-24 21:39:19,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:39:19,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:39:19,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:39:19,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:39:19,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:39:19,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:39:19,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:39:19,370 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:39:19,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:39:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:39:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:39:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:39:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:39:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:39:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:39:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:39:20,677 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:39:20,678 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:39:20,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:39:20 BoogieIcfgContainer [2020-09-24 21:39:20,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:39:20,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:39:20,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:39:20,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:39:20,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:39:18" (1/3) ... [2020-09-24 21:39:20,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f20504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:39:20, skipping insertion in model container [2020-09-24 21:39:20,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:19" (2/3) ... [2020-09-24 21:39:20,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f20504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:39:20, skipping insertion in model container [2020-09-24 21:39:20,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:39:20" (3/3) ... [2020-09-24 21:39:20,698 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label19.c [2020-09-24 21:39:20,710 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:39:20,722 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:39:20,746 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:39:20,783 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:39:20,783 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:39:20,783 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:39:20,784 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:39:20,784 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:39:20,784 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:39:20,784 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:39:20,784 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:39:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:39:20,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 21:39:20,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:20,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:39:20,839 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:20,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:20,848 INFO L82 PathProgramCache]: Analyzing trace with hash 628562263, now seen corresponding path program 1 times [2020-09-24 21:39:20,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:20,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828124687] [2020-09-24 21:39:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:21,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:21,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:21,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:21,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:22,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:25,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:26,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:26,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-24 21:39:26,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:39:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 21:39:26,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:26,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:39:26,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:39:26,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:39:26,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:39:26,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:26,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:27,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:27,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:27,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:27,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 21:39:27,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:27,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:39:27,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:27,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:27,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:39:27,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828124687] [2020-09-24 21:39:27,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:39:27,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 21:39:27,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457431498] [2020-09-24 21:39:27,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:39:27,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:27,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:39:27,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:39:27,378 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 21:39:27,724 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-24 21:39:28,191 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-09-24 21:39:28,421 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-09-24 21:39:28,993 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-09-24 21:39:29,988 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-09-24 21:39:30,467 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-24 21:39:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:34,353 INFO L93 Difference]: Finished difference Result 1700 states and 2421 transitions. [2020-09-24 21:39:34,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 21:39:34,356 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 114 [2020-09-24 21:39:34,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:34,385 INFO L225 Difference]: With dead ends: 1700 [2020-09-24 21:39:34,385 INFO L226 Difference]: Without dead ends: 1101 [2020-09-24 21:39:34,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2020-09-24 21:39:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-24 21:39:34,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 985. [2020-09-24 21:39:34,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 21:39:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1148 transitions. [2020-09-24 21:39:34,560 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1148 transitions. Word has length 114 [2020-09-24 21:39:34,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:34,561 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1148 transitions. [2020-09-24 21:39:34,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:39:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1148 transitions. [2020-09-24 21:39:34,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 21:39:34,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:34,573 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 21:39:34,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:39:34,574 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:34,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:34,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1239906662, now seen corresponding path program 1 times [2020-09-24 21:39:34,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:34,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288496729] [2020-09-24 21:39:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:34,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:34,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:36,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:36,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-24 21:39:36,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:39:36,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1770 [2020-09-24 21:39:36,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:36,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:39:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:39:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:39:36,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 21:39:36,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:36,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:36,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:36,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:36,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:36,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 21:39:36,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:39:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:39:36,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 21:39:36,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:39:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:36,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:36,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:36,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:36,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:39:36,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 21:39:36,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:39:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:39:36,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 21:39:36,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288496729] [2020-09-24 21:39:36,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:39:36,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 21:39:36,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982048709] [2020-09-24 21:39:36,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:39:36,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:36,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:39:36,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:39:36,758 INFO L87 Difference]: Start difference. First operand 985 states and 1148 transitions. Second operand 6 states. [2020-09-24 21:39:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:38,728 INFO L93 Difference]: Finished difference Result 2364 states and 2855 transitions. [2020-09-24 21:39:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:39:38,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-09-24 21:39:38,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:38,742 INFO L225 Difference]: With dead ends: 2364 [2020-09-24 21:39:38,742 INFO L226 Difference]: Without dead ends: 1467 [2020-09-24 21:39:38,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:39:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2020-09-24 21:39:38,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1418. [2020-09-24 21:39:38,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2020-09-24 21:39:38,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 1694 transitions. [2020-09-24 21:39:38,815 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 1694 transitions. Word has length 135 [2020-09-24 21:39:38,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:38,818 INFO L479 AbstractCegarLoop]: Abstraction has 1418 states and 1694 transitions. [2020-09-24 21:39:38,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:39:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 1694 transitions. [2020-09-24 21:39:38,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 21:39:38,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:38,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:39:38,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:39:38,838 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:38,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:38,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1566887230, now seen corresponding path program 1 times [2020-09-24 21:39:38,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:38,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226204272] [2020-09-24 21:39:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:39,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:40,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:40,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:42,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:43,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:43,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:43,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 21:39:43,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:39:43,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-24 21:39:43,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:39:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:39:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:39:43,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:39:44,612 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-09-24 21:39:44,777 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-09-24 21:39:45,029 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 51 [2020-09-24 21:39:45,263 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 48 [2020-09-24 21:39:45,482 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 44 [2020-09-24 21:39:45,704 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 40 [2020-09-24 21:39:45,866 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 34 [2020-09-24 21:39:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:45,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:46,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:46,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:46,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 21:39:46,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:46,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:46,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:39:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:46,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:46,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:46,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:39:46,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 21:39:46,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:39:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:39:46,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:46,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 21:39:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:46,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:46,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:46,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:46,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:39:46,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:46,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 21:39:46,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:46,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:46,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:39:46,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:46,974 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:39:46,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226204272] [2020-09-24 21:39:46,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:39:46,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:39:46,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419301752] [2020-09-24 21:39:46,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:39:46,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:46,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:39:46,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:39:46,977 INFO L87 Difference]: Start difference. First operand 1418 states and 1694 transitions. Second operand 23 states. [2020-09-24 21:39:47,681 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-09-24 21:39:48,269 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-09-24 21:39:49,303 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-09-24 21:39:50,409 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 95 [2020-09-24 21:39:51,184 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2020-09-24 21:39:51,516 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 92 [2020-09-24 21:39:51,870 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-09-24 21:39:52,196 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 88 [2020-09-24 21:39:52,540 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2020-09-24 21:39:53,012 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 117 [2020-09-24 21:39:53,619 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 93 [2020-09-24 21:39:54,140 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 113 [2020-09-24 21:39:54,470 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2020-09-24 21:39:55,744 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 110 [2020-09-24 21:39:56,043 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2020-09-24 21:39:56,857 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 107 [2020-09-24 21:39:57,115 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2020-09-24 21:39:57,518 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-09-24 21:39:57,917 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 104 [2020-09-24 21:39:58,463 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-09-24 21:39:59,270 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 99 [2020-09-24 21:40:01,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:01,015 INFO L93 Difference]: Finished difference Result 4965 states and 6508 transitions. [2020-09-24 21:40:01,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-09-24 21:40:01,017 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 152 [2020-09-24 21:40:01,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:01,036 INFO L225 Difference]: With dead ends: 4965 [2020-09-24 21:40:01,036 INFO L226 Difference]: Without dead ends: 3635 [2020-09-24 21:40:01,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2020-09-24 21:40:01,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2020-09-24 21:40:01,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3212. [2020-09-24 21:40:01,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3212 states. [2020-09-24 21:40:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 3957 transitions. [2020-09-24 21:40:01,150 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 3957 transitions. Word has length 152 [2020-09-24 21:40:01,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:01,151 INFO L479 AbstractCegarLoop]: Abstraction has 3212 states and 3957 transitions. [2020-09-24 21:40:01,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:40:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 3957 transitions. [2020-09-24 21:40:01,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 21:40:01,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:01,162 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:01,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:40:01,163 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:01,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:01,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1460590075, now seen corresponding path program 1 times [2020-09-24 21:40:01,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:01,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347115428] [2020-09-24 21:40:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:01,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:02,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:03,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:05,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:05,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:06,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:06,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 21:40:06,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:40:06,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:40:06,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:40:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 21:40:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:06,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:06,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:06,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:06,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:06,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:06,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:40:06,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:40:06,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:06,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:40:06,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:06,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:06,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:06,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:06,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:06,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:40:06,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:06,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:40:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:40:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:06,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 21:40:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:06,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:06,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:06,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:40:06,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:40:06,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:40:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:40:06,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:40:06,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347115428] [2020-09-24 21:40:06,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:40:06,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:40:06,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168854106] [2020-09-24 21:40:06,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:40:06,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:06,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:40:06,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:40:06,449 INFO L87 Difference]: Start difference. First operand 3212 states and 3957 transitions. Second operand 8 states.