/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:39:46,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:39:46,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:39:46,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:39:46,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:39:46,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:39:46,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:39:46,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:39:46,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:39:46,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:39:46,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:39:46,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:39:46,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:39:46,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:39:46,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:39:46,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:39:46,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:39:46,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:39:46,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:39:46,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:39:46,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:39:46,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:39:46,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:39:46,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:39:46,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:39:46,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:39:46,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:39:46,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:39:46,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:39:46,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:39:46,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:39:46,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:39:46,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:39:46,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:39:46,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:39:46,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:39:46,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:39:46,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:39:46,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:39:46,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:39:46,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:39:46,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:39:46,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:39:46,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:39:46,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:39:46,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:39:46,906 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:39:46,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:39:46,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:39:46,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:39:46,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:39:46,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:39:46,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:39:46,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:39:46,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:39:46,908 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:39:46,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:39:46,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:39:46,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:39:46,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:39:46,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:39:46,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:39:46,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:39:46,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:39:46,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:39:46,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:39:46,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:39:46,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:39:46,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:39:46,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:39:46,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:39:46,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:39:47,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:39:47,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:39:47,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:39:47,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:39:47,401 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:39:47,403 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-24 21:39:47,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26bac388b/6b3e406b50124eb2a763239f468372de/FLAGace479020 [2020-09-24 21:39:48,165 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:39:48,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-24 21:39:48,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26bac388b/6b3e406b50124eb2a763239f468372de/FLAGace479020 [2020-09-24 21:39:48,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26bac388b/6b3e406b50124eb2a763239f468372de [2020-09-24 21:39:48,413 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:39:48,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:39:48,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:39:48,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:39:48,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:39:48,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:39:48" (1/1) ... [2020-09-24 21:39:48,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:48, skipping insertion in model container [2020-09-24 21:39:48,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:39:48" (1/1) ... [2020-09-24 21:39:48,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:39:48,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:39:48,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:39:48,981 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:39:49,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:39:49,235 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:39:49,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49 WrapperNode [2020-09-24 21:39:49,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:39:49,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:39:49,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:39:49,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:39:49,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:39:49,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:39:49,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:39:49,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:39:49,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:39:49,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:39:49,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:39:49,451 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:39:49,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:39:49,451 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:39:49,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:39:49,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:39:49,452 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:39:49,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:39:49,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:39:49,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:39:50,753 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:39:50,754 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:39:50,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:39:50 BoogieIcfgContainer [2020-09-24 21:39:50,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:39:50,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:39:50,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:39:50,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:39:50,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:39:48" (1/3) ... [2020-09-24 21:39:50,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc1ad21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:39:50, skipping insertion in model container [2020-09-24 21:39:50,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (2/3) ... [2020-09-24 21:39:50,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc1ad21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:39:50, skipping insertion in model container [2020-09-24 21:39:50,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:39:50" (3/3) ... [2020-09-24 21:39:50,787 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-09-24 21:39:50,798 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:39:50,814 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:39:50,837 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:39:50,880 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:39:50,881 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:39:50,881 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:39:50,881 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:39:50,881 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:39:50,881 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:39:50,881 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:39:50,881 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:39:50,932 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:39:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 21:39:50,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:50,979 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] [2020-09-24 21:39:50,980 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:50,989 INFO L82 PathProgramCache]: Analyzing trace with hash -2068005297, now seen corresponding path program 1 times [2020-09-24 21:39:50,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:51,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067808539] [2020-09-24 21:39:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:51,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:52,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:52,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:53,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:54,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:55,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:56,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:56,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:56,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 21:39:56,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:39:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 21:39:56,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:39:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:39:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:39:56,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:39:57,106 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-09-24 21:39:57,310 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 38 [2020-09-24 21:39:57,453 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 36 [2020-09-24 21:39:57,585 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 38 [2020-09-24 21:39:57,714 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 36 [2020-09-24 21:39:57,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:57,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:57,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:57,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:57,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:57,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 21:39:57,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:39:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:58,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:39:58,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067808539] [2020-09-24 21:39:58,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:39:58,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 21:39:58,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066350063] [2020-09-24 21:39:58,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:39:58,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:58,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:39:58,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:39:58,333 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 21:39:58,728 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 21:39:58,881 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 21:39:59,044 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 21:39:59,356 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-09-24 21:39:59,668 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2020-09-24 21:40:00,211 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2020-09-24 21:40:01,318 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2020-09-24 21:40:02,033 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2020-09-24 21:40:02,893 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-09-24 21:40:03,561 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-09-24 21:40:03,961 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-24 21:40:04,804 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-09-24 21:40:07,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:07,953 INFO L93 Difference]: Finished difference Result 1700 states and 2421 transitions. [2020-09-24 21:40:07,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 21:40:07,955 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 160 [2020-09-24 21:40:07,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:07,986 INFO L225 Difference]: With dead ends: 1700 [2020-09-24 21:40:07,986 INFO L226 Difference]: Without dead ends: 1101 [2020-09-24 21:40:08,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=384, Invalid=948, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 21:40:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-24 21:40:08,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 985. [2020-09-24 21:40:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 21:40:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1147 transitions. [2020-09-24 21:40:08,123 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1147 transitions. Word has length 160 [2020-09-24 21:40:08,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:08,124 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1147 transitions. [2020-09-24 21:40:08,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:40:08,124 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1147 transitions. [2020-09-24 21:40:08,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 21:40:08,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:08,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:08,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:40:08,134 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:08,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1431628678, now seen corresponding path program 1 times [2020-09-24 21:40:08,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:08,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562223604] [2020-09-24 21:40:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:08,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:08,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:09,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:11,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:13,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:13,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-24 21:40:13,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:40:13,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 21:40:13,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:13,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 21:40:13,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:40:13,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:40:13,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 21:40:13,952 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-09-24 21:40:14,083 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-09-24 21:40:14,217 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-09-24 21:40:14,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:14,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:14,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:14,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 21:40:14,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:40:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:14,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:15,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:15,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:15,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:40:15,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:40:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 21:40:15,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:40:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:40:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:15,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 21:40:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:15,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:15,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:15,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:15,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:15,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:40:15,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 21:40:15,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:40:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:15,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:40:15,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562223604] [2020-09-24 21:40:15,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:40:15,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 21:40:15,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53490534] [2020-09-24 21:40:15,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 21:40:15,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:15,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 21:40:15,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:40:15,647 INFO L87 Difference]: Start difference. First operand 985 states and 1147 transitions. Second operand 29 states. [2020-09-24 21:40:16,118 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-09-24 21:40:16,963 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-09-24 21:40:17,487 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-09-24 21:40:18,109 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-09-24 21:40:18,515 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-09-24 21:40:18,702 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-09-24 21:40:19,042 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-09-24 21:40:19,282 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-09-24 21:40:19,508 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-09-24 21:40:19,965 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-09-24 21:40:20,234 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 21:40:21,416 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-09-24 21:40:21,657 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 21:40:21,961 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-09-24 21:40:22,197 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-09-24 21:40:22,536 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-09-24 21:40:22,837 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-09-24 21:40:23,191 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-09-24 21:40:23,434 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-09-24 21:40:23,716 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-09-24 21:40:23,945 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2020-09-24 21:40:24,126 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-09-24 21:40:24,539 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-09-24 21:40:24,714 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-09-24 21:40:24,956 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-09-24 21:40:25,211 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-09-24 21:40:25,673 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-09-24 21:40:25,972 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-09-24 21:40:26,357 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-09-24 21:40:26,726 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-24 21:40:27,070 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-09-24 21:40:27,704 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2020-09-24 21:40:28,180 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-09-24 21:40:28,661 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-09-24 21:40:28,973 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2020-09-24 21:40:29,246 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-09-24 21:40:29,750 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-09-24 21:40:30,163 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-09-24 21:40:30,539 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 21:40:30,769 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-09-24 21:40:31,070 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 21:40:31,309 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-09-24 21:40:31,609 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2020-09-24 21:40:31,902 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-09-24 21:40:32,100 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-09-24 21:40:32,405 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-09-24 21:40:32,757 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-24 21:40:32,931 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-09-24 21:40:33,295 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2020-09-24 21:40:33,532 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-09-24 21:40:33,834 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2020-09-24 21:40:34,166 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-09-24 21:40:34,468 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2020-09-24 21:40:34,667 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-09-24 21:40:35,013 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-09-24 21:40:35,279 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-09-24 21:40:35,913 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-09-24 21:40:36,253 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-09-24 21:40:36,635 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-09-24 21:40:36,974 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2020-09-24 21:40:37,306 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-09-24 21:40:37,641 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-09-24 21:40:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:39,194 INFO L93 Difference]: Finished difference Result 3801 states and 4948 transitions. [2020-09-24 21:40:39,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2020-09-24 21:40:39,195 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 198 [2020-09-24 21:40:39,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:39,228 INFO L225 Difference]: With dead ends: 3801 [2020-09-24 21:40:39,228 INFO L226 Difference]: Without dead ends: 2904 [2020-09-24 21:40:39,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=3325, Invalid=10247, Unknown=0, NotChecked=0, Total=13572 [2020-09-24 21:40:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-09-24 21:40:39,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2397. [2020-09-24 21:40:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2397 states. [2020-09-24 21:40:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 2931 transitions. [2020-09-24 21:40:39,366 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 2931 transitions. Word has length 198 [2020-09-24 21:40:39,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:39,368 INFO L479 AbstractCegarLoop]: Abstraction has 2397 states and 2931 transitions. [2020-09-24 21:40:39,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 21:40:39,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 2931 transitions. [2020-09-24 21:40:39,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 21:40:39,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:39,384 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2020-09-24 21:40:39,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:40:39,385 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:39,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:39,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1676369428, now seen corresponding path program 1 times [2020-09-24 21:40:39,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:39,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765318000] [2020-09-24 21:40:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:39,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:39,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:39,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:40,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking...