/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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:41:06,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:41:06,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:41:06,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:41:06,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:41:06,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:41:06,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:41:06,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:41:06,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:41:06,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:41:06,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:41:06,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:41:06,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:41:06,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:41:06,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:41:06,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:41:06,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:41:06,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:41:06,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:41:06,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:41:06,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:41:06,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:41:06,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:41:06,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:41:06,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:41:06,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:41:06,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:41:06,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:41:06,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:41:06,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 21:41:06,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:41:06,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:41:06,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:41:06,740 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 21:41:06,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:41:06,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:41:06,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:41:06,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:41:06,808 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:41:06,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:41:06,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:41:06,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:41:06,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:41:06,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:41:06,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:41:06,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:41:06,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:41:06,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:41:06,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:41:06,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:41:06,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:41:06,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:41:06,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:41:06,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:41:06,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:41:06,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:41:06,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:41:06,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:41:06,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:41:06,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:41:06,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:41:06,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:41:06,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:41:06,815 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 21:41:07,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:41:07,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:41:07,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:41:07,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:41:07,305 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:41:07,306 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label07.c [2020-09-24 21:41:07,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de4dc2be9/959a3c020433490199e9748dee1cc199/FLAGdcf5462a4 [2020-09-24 21:41:08,055 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:41:08,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label07.c [2020-09-24 21:41:08,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de4dc2be9/959a3c020433490199e9748dee1cc199/FLAGdcf5462a4 [2020-09-24 21:41:08,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de4dc2be9/959a3c020433490199e9748dee1cc199 [2020-09-24 21:41:08,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:41:08,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:41:08,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:41:08,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:41:08,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:41:08,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:41:08" (1/1) ... [2020-09-24 21:41:08,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:08, skipping insertion in model container [2020-09-24 21:41:08,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:41:08" (1/1) ... [2020-09-24 21:41:08,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:41:08,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:41:08,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:41:08,861 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:41:09,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:41:09,209 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:41:09,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:09 WrapperNode [2020-09-24 21:41:09,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:41:09,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:41:09,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:41:09,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:41:09,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:09" (1/1) ... [2020-09-24 21:41:09,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:09" (1/1) ... [2020-09-24 21:41:09,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:09" (1/1) ... [2020-09-24 21:41:09,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:09" (1/1) ... [2020-09-24 21:41:09,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:09" (1/1) ... [2020-09-24 21:41:09,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:09" (1/1) ... [2020-09-24 21:41:09,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:09" (1/1) ... [2020-09-24 21:41:09,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:41:09,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:41:09,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:41:09,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:41:09,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:09" (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 21:41:09,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:41:09,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:41:09,441 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:41:09,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:41:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:41:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:41:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:41:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:41:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:41:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:41:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:41:11,204 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:41:11,205 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:41:11,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:41:11 BoogieIcfgContainer [2020-09-24 21:41:11,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:41:11,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:41:11,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:41:11,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:41:11,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:41:08" (1/3) ... [2020-09-24 21:41:11,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:41:11, skipping insertion in model container [2020-09-24 21:41:11,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:09" (2/3) ... [2020-09-24 21:41:11,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:41:11, skipping insertion in model container [2020-09-24 21:41:11,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:41:11" (3/3) ... [2020-09-24 21:41:11,225 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label07.c [2020-09-24 21:41:11,234 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:41:11,246 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:41:11,269 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:41:11,304 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:41:11,304 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:41:11,305 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:41:11,305 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:41:11,305 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:41:11,305 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:41:11,305 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:41:11,305 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:41:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:41:11,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 21:41:11,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:11,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:41:11,367 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:11,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:11,376 INFO L82 PathProgramCache]: Analyzing trace with hash 228287402, now seen corresponding path program 1 times [2020-09-24 21:41:11,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:11,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142353674] [2020-09-24 21:41:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:13,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:13,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:15,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:16,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:16,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 21:41:16,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:41:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-09-24 21:41:16,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:41:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:41:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:41:16,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 21:41:17,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:41:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:17,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:17,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:17,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:41:17,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:17,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 21:41:17,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:17,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:41:17,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:41:17,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:41:17,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:41:18,024 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 21:41:18,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142353674] [2020-09-24 21:41:18,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:41:18,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 21:41:18,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388499258] [2020-09-24 21:41:18,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:41:18,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:41:18,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:41:18,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:41:18,066 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-24 21:41:18,643 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-24 21:41:18,854 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-09-24 21:41:19,085 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-09-24 21:41:19,690 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-09-24 21:41:20,039 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-24 21:41:21,119 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-09-24 21:41:21,306 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-09-24 21:41:21,576 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-24 21:41:22,319 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-09-24 21:41:22,790 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-09-24 21:41:22,994 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-24 21:41:23,957 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-09-24 21:41:24,377 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-24 21:41:26,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:41:26,809 INFO L93 Difference]: Finished difference Result 1869 states and 2661 transitions. [2020-09-24 21:41:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:41:26,811 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 165 [2020-09-24 21:41:26,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:41:26,841 INFO L225 Difference]: With dead ends: 1869 [2020-09-24 21:41:26,841 INFO L226 Difference]: Without dead ends: 1239 [2020-09-24 21:41:26,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 21:41:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-09-24 21:41:26,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1076. [2020-09-24 21:41:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-24 21:41:26,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1293 transitions. [2020-09-24 21:41:26,985 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1293 transitions. Word has length 165 [2020-09-24 21:41:26,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:41:26,986 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1293 transitions. [2020-09-24 21:41:26,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:41:26,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1293 transitions. [2020-09-24 21:41:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 21:41:27,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:27,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:41:27,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:41:27,007 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:27,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:27,008 INFO L82 PathProgramCache]: Analyzing trace with hash 938728200, now seen corresponding path program 1 times [2020-09-24 21:41:27,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:27,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310337898] [2020-09-24 21:41:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:27,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:27,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:28,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:30,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:31,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:32,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:32,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 21:41:32,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:41:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 21:41:32,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:41:32,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:41:32,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:41:32,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:33,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:41:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:33,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:33,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:33,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:41:33,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:33,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 21:41:33,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:33,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:41:33,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:41:33,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:41:33,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:33,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:41:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:33,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:33,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:33,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:41:33,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:33,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 21:41:33,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:33,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:41:33,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:41:33,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:41:33,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:41:33,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310337898] [2020-09-24 21:41:33,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:41:33,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:41:33,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050051352] [2020-09-24 21:41:33,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:41:33,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:41:33,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:41:33,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:41:33,947 INFO L87 Difference]: Start difference. First operand 1076 states and 1293 transitions. Second operand 19 states. [2020-09-24 21:41:34,680 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-09-24 21:41:34,885 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-09-24 21:41:35,358 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-09-24 21:41:35,611 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-09-24 21:41:36,394 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-09-24 21:41:36,777 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-09-24 21:41:37,108 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-09-24 21:41:37,379 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-09-24 21:41:38,174 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-09-24 21:41:38,822 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-09-24 21:41:39,206 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-24 21:41:40,025 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-09-24 21:41:40,556 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-09-24 21:41:40,950 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-09-24 21:41:41,368 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-09-24 21:41:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:41:43,236 INFO L93 Difference]: Finished difference Result 4103 states and 5484 transitions. [2020-09-24 21:41:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-24 21:41:43,237 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 187 [2020-09-24 21:41:43,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:41:43,263 INFO L225 Difference]: With dead ends: 4103 [2020-09-24 21:41:43,264 INFO L226 Difference]: Without dead ends: 3107 [2020-09-24 21:41:43,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=593, Invalid=1477, Unknown=0, NotChecked=0, Total=2070 [2020-09-24 21:41:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2020-09-24 21:41:43,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3029. [2020-09-24 21:41:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3029 states. [2020-09-24 21:41:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3029 states to 3029 states and 3672 transitions. [2020-09-24 21:41:43,387 INFO L78 Accepts]: Start accepts. Automaton has 3029 states and 3672 transitions. Word has length 187 [2020-09-24 21:41:43,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:41:43,388 INFO L479 AbstractCegarLoop]: Abstraction has 3029 states and 3672 transitions. [2020-09-24 21:41:43,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:41:43,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3029 states and 3672 transitions. [2020-09-24 21:41:43,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 21:41:43,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:43,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:41:43,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:41:43,403 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:43,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:43,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1751673341, now seen corresponding path program 1 times [2020-09-24 21:41:43,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:43,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543254989] [2020-09-24 21:41:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:43,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:43,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:45,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:47,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:48,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:48,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-24 21:41:48,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:41:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-09-24 21:41:48,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:41:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:41:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:41:48,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:48,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:41:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:48,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:48,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:48,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:41:48,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:48,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 21:41:48,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:41:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:41:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:41:48,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:41:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:41:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:48,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:49,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:49,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:49,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:41:49,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:41:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 21:41:49,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:41:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:41:49,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:41:49,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:41:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 21:41:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:49,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:49,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:49,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:49,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:41:49,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:41:49,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 21:41:49,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:41:49,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:41:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:41:49,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-24 21:41:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 21:41:49,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543254989] [2020-09-24 21:41:49,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:41:49,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:41:49,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273690331] [2020-09-24 21:41:49,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:41:49,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:41:49,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:41:49,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:41:49,565 INFO L87 Difference]: Start difference. First operand 3029 states and 3672 transitions. Second operand 12 states. [2020-09-24 21:41:50,516 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-24 21:41:51,011 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-24 21:41:52,838 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-24 21:41:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:41:55,887 INFO L93 Difference]: Finished difference Result 8675 states and 11475 transitions. [2020-09-24 21:41:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:41:55,888 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 200 [2020-09-24 21:41:55,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:41:55,923 INFO L225 Difference]: With dead ends: 8675 [2020-09-24 21:41:55,923 INFO L226 Difference]: Without dead ends: 5373 [2020-09-24 21:41:55,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-09-24 21:41:55,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5373 states. [2020-09-24 21:41:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5373 to 4725. [2020-09-24 21:41:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4725 states. [2020-09-24 21:41:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 5815 transitions. [2020-09-24 21:41:56,104 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 5815 transitions. Word has length 200 [2020-09-24 21:41:56,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:41:56,104 INFO L479 AbstractCegarLoop]: Abstraction has 4725 states and 5815 transitions. [2020-09-24 21:41:56,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:41:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 5815 transitions. [2020-09-24 21:41:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 21:41:56,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:56,128 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:56,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:41:56,129 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:56,129 INFO L82 PathProgramCache]: Analyzing trace with hash -316722641, now seen corresponding path program 1 times [2020-09-24 21:41:56,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:56,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606356924] [2020-09-24 21:41:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:56,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:56,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:56,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:57,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:58,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking...