/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/Problem02_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:41:44,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:41:44,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:41:44,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:41:44,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:41:44,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:41:44,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:41:44,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:41:44,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:41:44,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:41:44,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:41:44,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:41:44,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:41:44,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:41:44,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:41:44,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:41:44,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:41:44,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:41:44,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:41:44,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:41:44,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:41:44,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:41:44,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:41:44,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:41:44,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:41:44,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:41:44,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:41:44,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:41:44,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:41:44,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 21:41:44,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:41:44,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:41:44,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:41:44,706 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 21:41:44,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:41:44,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:41:44,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:41:44,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:41:44,767 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:41:44,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:41:44,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:41:44,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:41:44,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:41:44,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:41:44,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:41:44,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:41:44,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:41:44,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:41:44,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:41:44,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:41:44,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:41:44,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:41:44,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:41:44,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:41:44,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:41:44,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:41:44,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:41:44,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:41:44,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:41:44,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:41:44,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:41:44,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:41:44,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:41:44,774 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 21:41:45,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:41:45,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:41:45,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:41:45,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:41:45,315 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:41:45,316 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label17.c [2020-09-24 21:41:45,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5274882ab/2726a6fd6dbf4b79a5e03576ebf51b77/FLAGd1920d3ab [2020-09-24 21:41:46,062 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:41:46,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label17.c [2020-09-24 21:41:46,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5274882ab/2726a6fd6dbf4b79a5e03576ebf51b77/FLAGd1920d3ab [2020-09-24 21:41:46,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5274882ab/2726a6fd6dbf4b79a5e03576ebf51b77 [2020-09-24 21:41:46,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:41:46,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:41:46,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:41:46,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:41:46,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:41:46,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:41:46" (1/1) ... [2020-09-24 21:41:46,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:46, skipping insertion in model container [2020-09-24 21:41:46,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:41:46" (1/1) ... [2020-09-24 21:41:46,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:41:46,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:41:46,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:41:46,864 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:41:47,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:41:47,133 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:41:47,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:47 WrapperNode [2020-09-24 21:41:47,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:41:47,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:41:47,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:41:47,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:41:47,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:47" (1/1) ... [2020-09-24 21:41:47,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:47" (1/1) ... [2020-09-24 21:41:47,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:47" (1/1) ... [2020-09-24 21:41:47,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:47" (1/1) ... [2020-09-24 21:41:47,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:47" (1/1) ... [2020-09-24 21:41:47,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:47" (1/1) ... [2020-09-24 21:41:47,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:47" (1/1) ... [2020-09-24 21:41:47,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:41:47,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:41:47,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:41:47,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:41:47,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:47" (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 21:41:47,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:41:47,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:41:47,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:41:47,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:41:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:41:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:41:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:41:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:41:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:41:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:41:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:41:48,681 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:41:48,681 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:41:48,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:41:48 BoogieIcfgContainer [2020-09-24 21:41:48,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:41:48,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:41:48,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:41:48,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:41:48,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:41:46" (1/3) ... [2020-09-24 21:41:48,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:41:48, skipping insertion in model container [2020-09-24 21:41:48,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:47" (2/3) ... [2020-09-24 21:41:48,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:41:48, skipping insertion in model container [2020-09-24 21:41:48,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:41:48" (3/3) ... [2020-09-24 21:41:48,702 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label17.c [2020-09-24 21:41:48,714 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:41:48,731 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:41:48,754 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:41:48,791 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:41:48,792 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:41:48,792 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:41:48,792 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:41:48,792 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:41:48,792 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:41:48,793 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:41:48,793 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:41:48,827 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:41:48,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-24 21:41:48,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:48,856 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, 1, 1, 1, 1, 1, 1, 1, 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 21:41:48,856 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:48,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:48,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1479057050, now seen corresponding path program 1 times [2020-09-24 21:41:48,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:48,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-24 21:41:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:49,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:49,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:49,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:50,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:52,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:52,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:53,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:54,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:54,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 21:41:54,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:41:54,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:41:54,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:41:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:41:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:41:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:41:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:41:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:54,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:54,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:54,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:41:54,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:54,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 21:41:54,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:41:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:41:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:41:54,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:55,120 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 21:41:55,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-24 21:41:55,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:41:55,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 21:41:55,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473508311] [2020-09-24 21:41:55,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:41:55,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:41:55,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:41:55,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:41:55,155 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-24 21:41:55,837 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-09-24 21:41:56,061 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-09-24 21:41:56,686 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-09-24 21:41:57,092 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-24 21:41:58,251 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-09-24 21:41:58,452 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-09-24 21:41:58,757 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-24 21:41:59,491 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-09-24 21:42:00,023 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-09-24 21:42:00,206 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-24 21:42:01,183 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-09-24 21:42:01,610 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-24 21:42:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:04,113 INFO L93 Difference]: Finished difference Result 1869 states and 2661 transitions. [2020-09-24 21:42:04,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:42:04,115 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 145 [2020-09-24 21:42:04,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:04,146 INFO L225 Difference]: With dead ends: 1869 [2020-09-24 21:42:04,147 INFO L226 Difference]: Without dead ends: 1239 [2020-09-24 21:42:04,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 21:42:04,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-09-24 21:42:04,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1076. [2020-09-24 21:42:04,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-24 21:42:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1293 transitions. [2020-09-24 21:42:04,303 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1293 transitions. Word has length 145 [2020-09-24 21:42:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:04,304 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1293 transitions. [2020-09-24 21:42:04,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:42:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1293 transitions. [2020-09-24 21:42:04,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 21:42:04,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:04,315 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:04,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:42:04,316 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:04,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:04,316 INFO L82 PathProgramCache]: Analyzing trace with hash -684461832, now seen corresponding path program 1 times [2020-09-24 21:42:04,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:04,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544726436] [2020-09-24 21:42:04,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:04,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:04,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:05,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:05,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:07,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:07,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:08,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:08,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:09,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:09,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 21:42:09,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:42:09,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:42:09,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:42:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:42:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:42:09,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 21:42:09,957 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-09-24 21:42:10,074 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-09-24 21:42:10,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:10,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:10,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:10,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:10,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 21:42:10,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:10,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:10,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:10,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:10,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:10,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:42:10,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:10,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 21:42:10,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:10,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:42:10,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:10,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:42:10,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:42:10,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544726436] [2020-09-24 21:42:10,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:10,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:42:10,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814201292] [2020-09-24 21:42:10,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:42:10,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:10,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:42:10,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:42:10,984 INFO L87 Difference]: Start difference. First operand 1076 states and 1293 transitions. Second operand 19 states. [2020-09-24 21:42:11,775 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-24 21:42:12,259 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2020-09-24 21:42:12,582 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2020-09-24 21:42:12,792 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-09-24 21:42:13,234 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-09-24 21:42:13,529 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-24 21:42:14,016 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-09-24 21:42:14,291 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-24 21:42:14,601 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2020-09-24 21:42:15,391 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-09-24 21:42:16,004 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-09-24 21:42:16,406 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-09-24 21:42:17,289 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-09-24 21:42:17,889 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2020-09-24 21:42:18,341 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-09-24 21:42:18,762 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2020-09-24 21:42:20,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:20,651 INFO L93 Difference]: Finished difference Result 4063 states and 5402 transitions. [2020-09-24 21:42:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-24 21:42:20,653 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 167 [2020-09-24 21:42:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:20,674 INFO L225 Difference]: With dead ends: 4063 [2020-09-24 21:42:20,674 INFO L226 Difference]: Without dead ends: 3067 [2020-09-24 21:42:20,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=661, Invalid=1501, Unknown=0, NotChecked=0, Total=2162 [2020-09-24 21:42:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3067 states. [2020-09-24 21:42:20,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3067 to 2844. [2020-09-24 21:42:20,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2844 states. [2020-09-24 21:42:20,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 3417 transitions. [2020-09-24 21:42:20,813 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 3417 transitions. Word has length 167 [2020-09-24 21:42:20,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:20,814 INFO L479 AbstractCegarLoop]: Abstraction has 2844 states and 3417 transitions. [2020-09-24 21:42:20,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:42:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 3417 transitions. [2020-09-24 21:42:20,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-24 21:42:20,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:20,828 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:20,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:42:20,829 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:20,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:20,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1254372243, now seen corresponding path program 1 times [2020-09-24 21:42:20,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:20,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628347512] [2020-09-24 21:42:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:20,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:22,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:24,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:24,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:24,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:25,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:25,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:25,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-24 21:42:25,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:42:25,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 21:42:25,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:42:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:42:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:42:25,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:26,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:26,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:26,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:26,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:26,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:26,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 21:42:26,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:42:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 21:42:26,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:26,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:26,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:26,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:26,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:42:26,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:42:26,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 21:42:26,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:42:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:42:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:26,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 21:42:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:26,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:26,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:42:26,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:42:26,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 21:42:26,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:42:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:42:26,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:26,794 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2020-09-24 21:42:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:42:27,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628347512] [2020-09-24 21:42:27,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:27,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:42:27,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151690838] [2020-09-24 21:42:27,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:42:27,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:27,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:42:27,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:42:27,042 INFO L87 Difference]: Start difference. First operand 2844 states and 3417 transitions. Second operand 13 states. [2020-09-24 21:42:28,378 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-09-24 21:42:30,183 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-09-24 21:42:33,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:33,363 INFO L93 Difference]: Finished difference Result 8430 states and 11092 transitions. [2020-09-24 21:42:33,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:42:33,364 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 180 [2020-09-24 21:42:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:33,398 INFO L225 Difference]: With dead ends: 8430 [2020-09-24 21:42:33,398 INFO L226 Difference]: Without dead ends: 5311 [2020-09-24 21:42:33,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=265, Invalid=547, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:42:33,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2020-09-24 21:42:33,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 4363. [2020-09-24 21:42:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4363 states. [2020-09-24 21:42:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4363 states to 4363 states and 5319 transitions. [2020-09-24 21:42:33,561 INFO L78 Accepts]: Start accepts. Automaton has 4363 states and 5319 transitions. Word has length 180 [2020-09-24 21:42:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:33,561 INFO L479 AbstractCegarLoop]: Abstraction has 4363 states and 5319 transitions. [2020-09-24 21:42:33,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:42:33,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4363 states and 5319 transitions. [2020-09-24 21:42:33,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 21:42:33,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:33,582 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:33,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:42:33,582 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:33,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:33,583 INFO L82 PathProgramCache]: Analyzing trace with hash -278275515, now seen corresponding path program 1 times [2020-09-24 21:42:33,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:33,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950261603] [2020-09-24 21:42:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:33,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:33,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:33,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking...