/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/n.c11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:03:55,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:03:55,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:03:55,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:03:55,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:03:55,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:03:55,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:03:55,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:03:55,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:03:55,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:03:55,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:03:55,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:03:55,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:03:55,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:03:55,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:03:55,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:03:55,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:03:55,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:03:55,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:03:55,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:03:55,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:03:55,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:03:55,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:03:55,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:03:55,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:03:55,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:03:55,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:03:55,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:03:55,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:03:55,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:03:55,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:03:55,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:03:55,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:03:55,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:03:55,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:03:55,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:03:55,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:03:55,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:03:55,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:03:55,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:03:55,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:03:55,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:03:55,953 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:03:55,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:03:55,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:03:55,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:03:55,955 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:03:55,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:03:55,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:03:55,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:03:55,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:03:55,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:03:55,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:03:55,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:03:55,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:03:55,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:03:55,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:03:55,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:03:55,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:03:55,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:03:55,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:03:55,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:03:55,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:03:55,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:03:55,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:03:55,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:03:55,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:03:55,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:03:55,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:03:55,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:03:55,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:03:55,960 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:03:56,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:03:56,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:03:56,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:03:56,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:03:56,472 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:03:56,473 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11.c [2020-09-25 00:03:56,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00dd74775/bbe75dc22fb24d6cab325d43d08c00d1/FLAG865d9a539 [2020-09-25 00:03:57,074 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:03:57,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/n.c11.c [2020-09-25 00:03:57,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00dd74775/bbe75dc22fb24d6cab325d43d08c00d1/FLAG865d9a539 [2020-09-25 00:03:57,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00dd74775/bbe75dc22fb24d6cab325d43d08c00d1 [2020-09-25 00:03:57,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:03:57,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:03:57,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:57,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:03:57,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:03:57,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:57" (1/1) ... [2020-09-25 00:03:57,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4363b436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:57, skipping insertion in model container [2020-09-25 00:03:57,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:57" (1/1) ... [2020-09-25 00:03:57,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:03:57,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:03:57,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:57,703 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:03:57,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:57,737 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:03:57,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:57 WrapperNode [2020-09-25 00:03:57,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:57,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:03:57,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:03:57,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:03:57,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:57" (1/1) ... [2020-09-25 00:03:57,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:57" (1/1) ... [2020-09-25 00:03:57,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:57" (1/1) ... [2020-09-25 00:03:57,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:57" (1/1) ... [2020-09-25 00:03:57,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:57" (1/1) ... [2020-09-25 00:03:57,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:57" (1/1) ... [2020-09-25 00:03:57,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:57" (1/1) ... [2020-09-25 00:03:57,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:03:57,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:03:57,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:03:57,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:03:57,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:03:57,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:03:57,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:03:57,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:03:57,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:03:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:03:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:03:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 00:03:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:03:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:03:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:03:58,118 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:03:58,119 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 00:03:58,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:58 BoogieIcfgContainer [2020-09-25 00:03:58,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:03:58,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:03:58,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:03:58,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:03:58,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:03:57" (1/3) ... [2020-09-25 00:03:58,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2bdb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:58, skipping insertion in model container [2020-09-25 00:03:58,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:57" (2/3) ... [2020-09-25 00:03:58,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2bdb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:58, skipping insertion in model container [2020-09-25 00:03:58,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:58" (3/3) ... [2020-09-25 00:03:58,134 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c11.c [2020-09-25 00:03:58,146 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:03:58,156 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:03:58,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:03:58,244 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:03:58,244 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:03:58,245 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:03:58,245 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:03:58,245 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:03:58,246 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:03:58,246 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:03:58,246 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:03:58,283 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-09-25 00:03:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 00:03:58,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:58,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:58,296 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:58,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:58,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1430370880, now seen corresponding path program 1 times [2020-09-25 00:03:58,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:58,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725901149] [2020-09-25 00:03:58,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:58,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:58,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:58,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:03:58,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:03:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 00:03:58,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:58,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:03:58,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:03:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:03:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:03:58,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:58,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:58,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:58,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:03:58,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:58,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:03:58,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:58,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:58,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:58,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:58,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:03:58,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725901149] [2020-09-25 00:03:58,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:03:58,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:03:58,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204480517] [2020-09-25 00:03:58,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:03:58,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:58,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:03:58,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:03:58,708 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-09-25 00:03:58,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:58,831 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-09-25 00:03:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:03:58,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-25 00:03:58,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:58,844 INFO L225 Difference]: With dead ends: 64 [2020-09-25 00:03:58,844 INFO L226 Difference]: Without dead ends: 27 [2020-09-25 00:03:58,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:03:58,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-25 00:03:58,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-09-25 00:03:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-25 00:03:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-09-25 00:03:58,893 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 12 [2020-09-25 00:03:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:58,894 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-09-25 00:03:58,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:03:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-09-25 00:03:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 00:03:58,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:58,896 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] [2020-09-25 00:03:58,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:03:58,897 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:58,897 INFO L82 PathProgramCache]: Analyzing trace with hash -4953541, now seen corresponding path program 1 times [2020-09-25 00:03:58,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:58,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395901384] [2020-09-25 00:03:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:58,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:59,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:59,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:03:59,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-25 00:03:59,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:03:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:03:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:03:59,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:59,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:59,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:59,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:03:59,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:03:59,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:59,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:03:59,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395901384] [2020-09-25 00:03:59,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:03:59,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:03:59,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541124811] [2020-09-25 00:03:59,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:03:59,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:59,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:03:59,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:03:59,336 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2020-09-25 00:03:59,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:59,440 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-09-25 00:03:59,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:03:59,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-25 00:03:59,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:59,442 INFO L225 Difference]: With dead ends: 52 [2020-09-25 00:03:59,442 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 00:03:59,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:03:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 00:03:59,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-09-25 00:03:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 00:03:59,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-09-25 00:03:59,451 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20 [2020-09-25 00:03:59,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:59,451 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-09-25 00:03:59,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:03:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-09-25 00:03:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 00:03:59,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:59,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:59,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:03:59,454 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:59,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:59,454 INFO L82 PathProgramCache]: Analyzing trace with hash 628881157, now seen corresponding path program 2 times [2020-09-25 00:03:59,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:59,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441170388] [2020-09-25 00:03:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:59,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:59,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 00:03:59,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-25 00:03:59,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:03:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:03:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:03:59,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:59,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:59,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:59,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:59,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:03:59,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:59,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:03:59,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:59,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:03:59,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441170388] [2020-09-25 00:03:59,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:03:59,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:03:59,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918345567] [2020-09-25 00:03:59,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:03:59,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:59,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:03:59,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:03:59,919 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-09-25 00:04:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:00,096 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-09-25 00:04:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:04:00,098 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-25 00:04:00,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:00,099 INFO L225 Difference]: With dead ends: 66 [2020-09-25 00:04:00,099 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 00:04:00,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:04:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 00:04:00,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-09-25 00:04:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 00:04:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 00:04:00,110 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 27 [2020-09-25 00:04:00,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:00,110 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 00:04:00,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:04:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 00:04:00,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 00:04:00,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:00,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:00,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:04:00,113 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:00,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:00,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1577865979, now seen corresponding path program 3 times [2020-09-25 00:04:00,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:00,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450124243] [2020-09-25 00:04:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:00,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:00,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:00,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 00:04:00,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:00,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-09-25 00:04:00,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:04:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:04:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:04:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:00,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:00,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:00,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:00,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:04:00,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:04:00,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:00,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:00,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:00,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:00,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:00,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450124243] [2020-09-25 00:04:00,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:00,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:04:00,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103183160] [2020-09-25 00:04:00,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:04:00,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:00,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:04:00,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:04:00,706 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 11 states. [2020-09-25 00:04:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:00,959 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2020-09-25 00:04:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:04:00,960 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-25 00:04:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:00,961 INFO L225 Difference]: With dead ends: 80 [2020-09-25 00:04:00,962 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 00:04:00,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-09-25 00:04:00,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 00:04:00,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-09-25 00:04:00,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 00:04:00,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 00:04:00,970 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 34 [2020-09-25 00:04:00,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:00,970 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 00:04:00,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:04:00,971 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 00:04:00,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 00:04:00,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:00,972 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:00,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:04:00,973 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:00,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:00,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1087419973, now seen corresponding path program 4 times [2020-09-25 00:04:00,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:00,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865232403] [2020-09-25 00:04:00,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:01,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:01,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 00:04:01,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:01,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-25 00:04:01,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:01,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:04:01,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:04:01,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:04:01,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:01,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:01,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:01,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:01,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:04:01,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:04:01,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:01,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:01,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:01,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:01,546 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:01,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865232403] [2020-09-25 00:04:01,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:01,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:04:01,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704778848] [2020-09-25 00:04:01,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:04:01,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:01,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:04:01,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:04:01,549 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 13 states. [2020-09-25 00:04:01,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:01,848 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-09-25 00:04:01,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:04:01,849 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-09-25 00:04:01,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:01,850 INFO L225 Difference]: With dead ends: 62 [2020-09-25 00:04:01,850 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 00:04:01,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-09-25 00:04:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 00:04:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-25 00:04:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 00:04:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 00:04:01,858 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 41 [2020-09-25 00:04:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:01,859 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 00:04:01,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:04:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 00:04:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 00:04:01,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:01,861 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:01,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:04:01,861 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:01,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:01,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1795298373, now seen corresponding path program 5 times [2020-09-25 00:04:01,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:01,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761881644] [2020-09-25 00:04:01,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:01,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:02,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:02,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 00:04:02,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:02,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-25 00:04:02,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:02,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:04:02,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:04:02,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 00:04:02,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:02,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:02,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:02,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:02,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:04:02,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:02,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:04:02,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:02,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:02,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761881644] [2020-09-25 00:04:02,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:02,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:04:02,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127657389] [2020-09-25 00:04:02,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:04:02,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:02,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:04:02,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:04:02,453 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 11 states. [2020-09-25 00:04:02,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:02,699 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-09-25 00:04:02,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 00:04:02,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-25 00:04:02,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:02,700 INFO L225 Difference]: With dead ends: 79 [2020-09-25 00:04:02,700 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:04:02,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:04:02,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:04:02,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:04:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:04:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:04:02,703 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-09-25 00:04:02,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:02,703 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:04:02,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:04:02,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:04:02,704 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:04:02,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:04:02,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:04:02,809 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 00:04:02,810 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:04:02,810 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:04:02,810 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:04:02,810 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:04:02,810 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:04:02,810 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 32) no Hoare annotation was computed. [2020-09-25 00:04:02,811 INFO L268 CegarLoopResult]: For program point L21(lines 21 22) no Hoare annotation was computed. [2020-09-25 00:04:02,811 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 22) no Hoare annotation was computed. [2020-09-25 00:04:02,811 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 00:04:02,811 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-09-25 00:04:02,811 INFO L264 CegarLoopResult]: At program point L19-4(lines 19 27) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4)) [2020-09-25 00:04:02,812 INFO L264 CegarLoopResult]: At program point L19-5(lines 19 27) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4)) [2020-09-25 00:04:02,812 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 32) no Hoare annotation was computed. [2020-09-25 00:04:02,812 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 12 32) the Hoare annotation is: true [2020-09-25 00:04:02,812 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 00:04:02,812 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 00:04:02,812 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-25 00:04:02,813 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-25 00:04:02,813 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 00:04:02,813 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 00:04:02,813 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 00:04:02,813 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 00:04:02,813 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 00:04:02,814 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 00:04:02,814 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 00:04:02,814 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 00:04:02,814 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 00:04:02,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:04:02 BoogieIcfgContainer [2020-09-25 00:04:02,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:04:02,841 INFO L168 Benchmark]: Toolchain (without parser) took 5404.26 ms. Allocated memory was 139.5 MB in the beginning and 282.1 MB in the end (delta: 142.6 MB). Free memory was 102.9 MB in the beginning and 226.5 MB in the end (delta: -123.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-09-25 00:04:02,842 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-25 00:04:02,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.83 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 93.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:04:02,844 INFO L168 Benchmark]: Boogie Preprocessor took 102.43 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 93.0 MB in the beginning and 179.7 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:04:02,845 INFO L168 Benchmark]: RCFGBuilder took 282.68 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 166.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 00:04:02,846 INFO L168 Benchmark]: TraceAbstraction took 4712.37 ms. Allocated memory was 201.3 MB in the beginning and 282.1 MB in the end (delta: 80.7 MB). Free memory was 166.9 MB in the beginning and 226.5 MB in the end (delta: -59.6 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-09-25 00:04:02,851 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.83 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 93.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.43 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 93.0 MB in the beginning and 179.7 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 282.68 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 166.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4712.37 ms. Allocated memory was 201.3 MB in the beginning and 282.1 MB in the end (delta: 80.7 MB). Free memory was 166.9 MB in the beginning and 226.5 MB in the end (delta: -59.6 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 < len / 4294967296 + 1 && len <= 4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 131 SDtfs, 100 SDslu, 796 SDs, 0 SdLazy, 625 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 26 NumberOfFragments, 27 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 112 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 34222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 21/155 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...