/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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invariants/even.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:33:05,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:33:05,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:33:05,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:33:05,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:33:05,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:33:05,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:33:05,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:33:05,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:33:05,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:33:05,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:33:05,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:33:05,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:33:05,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:33:05,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:33:05,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:33:05,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:33:05,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:33:05,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:33:05,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:33:05,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:33:05,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:33:05,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:33:05,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:33:05,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:33:05,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:33:05,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:33:05,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:33:05,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:33:05,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:33:05,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:33:05,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:33:05,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:33:05,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:33:05,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:33:05,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:33:05,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:33:05,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:33:05,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:33:05,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:33:05,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:33:05,892 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 [2020-09-21 11:33:05,918 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:33:05,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:33:05,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:33:05,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:33:05,920 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:33:05,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:33:05,920 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:33:05,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:33:05,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:33:05,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:33:05,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:33:05,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:33:05,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:33:05,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:33:05,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:33:05,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:33:05,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:33:05,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:33:05,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:33:05,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:33:05,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:33:05,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:33:05,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:33:05,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:33:05,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:33:05,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:33:05,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:33:05,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:33:05,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:33:05,925 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:33:06,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:33:06,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:33:06,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:33:06,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:33:06,444 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:33:06,445 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/even.c [2020-09-21 11:33:06,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79bca999e/bd28bef5a07448f7b126eb56bbda2f74/FLAG8f368fec7 [2020-09-21 11:33:07,081 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:33:07,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invariants/even.c [2020-09-21 11:33:07,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79bca999e/bd28bef5a07448f7b126eb56bbda2f74/FLAG8f368fec7 [2020-09-21 11:33:07,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79bca999e/bd28bef5a07448f7b126eb56bbda2f74 [2020-09-21 11:33:07,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:33:07,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:33:07,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:33:07,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:33:07,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:33:07,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:33:07" (1/1) ... [2020-09-21 11:33:07,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656101fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:07, skipping insertion in model container [2020-09-21 11:33:07,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:33:07" (1/1) ... [2020-09-21 11:33:07,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:33:07,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:33:07,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:33:07,729 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:33:07,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:33:07,761 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:33:07,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:07 WrapperNode [2020-09-21 11:33:07,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:33:07,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:33:07,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:33:07,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:33:07,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:07" (1/1) ... [2020-09-21 11:33:07,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:07" (1/1) ... [2020-09-21 11:33:07,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:07" (1/1) ... [2020-09-21 11:33:07,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:07" (1/1) ... [2020-09-21 11:33:07,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:07" (1/1) ... [2020-09-21 11:33:07,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:07" (1/1) ... [2020-09-21 11:33:07,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:07" (1/1) ... [2020-09-21 11:33:07,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:33:07,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:33:07,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:33:07,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:33:07,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:07" (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 [2020-09-21 11:33:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:33:07,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:33:07,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:33:07,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:33:07,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:33:07,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:33:07,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:33:07,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:33:07,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:33:07,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:33:08,151 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:33:08,151 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:33:08,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:33:08 BoogieIcfgContainer [2020-09-21 11:33:08,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:33:08,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:33:08,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:33:08,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:33:08,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:33:07" (1/3) ... [2020-09-21 11:33:08,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bdb4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:33:08, skipping insertion in model container [2020-09-21 11:33:08,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:07" (2/3) ... [2020-09-21 11:33:08,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bdb4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:33:08, skipping insertion in model container [2020-09-21 11:33:08,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:33:08" (3/3) ... [2020-09-21 11:33:08,170 INFO L109 eAbstractionObserver]: Analyzing ICFG even.c [2020-09-21 11:33:08,181 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:33:08,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:33:08,213 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:33:08,242 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:33:08,242 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:33:08,242 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:33:08,243 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:33:08,243 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:33:08,243 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:33:08,243 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:33:08,243 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:33:08,262 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-09-21 11:33:08,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 11:33:08,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:33:08,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:33:08,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:33:08,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:33:08,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2020-09-21 11:33:08,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:33:08,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750359138] [2020-09-21 11:33:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:33:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:08,389 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:08,389 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:08,389 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:08,390 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:08,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:33:08,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:33:08,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:33:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:08,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:08,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:33:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:08,418 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:08,418 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:08,418 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:08,419 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:08,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:33:08,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:08,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:33:08,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:08,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:08,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:33:08,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:08,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:33:08,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750359138] [2020-09-21 11:33:08,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:33:08,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-21 11:33:08,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298579688] [2020-09-21 11:33:08,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-21 11:33:08,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:33:08,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-21 11:33:08,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-21 11:33:08,458 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-09-21 11:33:08,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:33:08,486 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-09-21 11:33:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-21 11:33:08,488 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-21 11:33:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:33:08,498 INFO L225 Difference]: With dead ends: 31 [2020-09-21 11:33:08,499 INFO L226 Difference]: Without dead ends: 12 [2020-09-21 11:33:08,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-21 11:33:08,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-09-21 11:33:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-09-21 11:33:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-09-21 11:33:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-09-21 11:33:08,550 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-09-21 11:33:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:33:08,550 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-09-21 11:33:08,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-21 11:33:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-09-21 11:33:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-21 11:33:08,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:33:08,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:33:08,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:33:08,552 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:33:08,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:33:08,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1890620952, now seen corresponding path program 1 times [2020-09-21 11:33:08,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:33:08,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457852277] [2020-09-21 11:33:08,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:33:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:08,650 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:08,652 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:08,653 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:08,653 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:08,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:33:08,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 11:33:08,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:33:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:33:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:33:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:33:08,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:33:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:08,909 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:08,910 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:08,910 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:08,910 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:08,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:33:08,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:08,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:33:08,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:33:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:08,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:33:08,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:33:08,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457852277] [2020-09-21 11:33:08,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:33:08,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:33:08,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095247094] [2020-09-21 11:33:08,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:33:08,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:33:08,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:33:08,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:33:08,925 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2020-09-21 11:33:09,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:33:09,051 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-09-21 11:33:09,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:33:09,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-21 11:33:09,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:33:09,053 INFO L225 Difference]: With dead ends: 19 [2020-09-21 11:33:09,053 INFO L226 Difference]: Without dead ends: 14 [2020-09-21 11:33:09,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:33:09,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-09-21 11:33:09,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-09-21 11:33:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-09-21 11:33:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-09-21 11:33:09,059 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2020-09-21 11:33:09,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:33:09,062 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-09-21 11:33:09,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:33:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-09-21 11:33:09,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:33:09,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:33:09,064 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:33:09,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:33:09,064 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:33:09,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:33:09,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1109630717, now seen corresponding path program 1 times [2020-09-21 11:33:09,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:33:09,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810951590] [2020-09-21 11:33:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:33:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:09,137 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:09,138 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:09,138 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:09,138 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:09,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:33:09,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:09,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 11:33:09,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:33:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:33:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:33:09,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:33:09,404 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 15 [2020-09-21 11:33:09,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:33:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:33:09,427 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:33:09,427 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:33:09,427 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:33:09,427 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:33:09,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:33:09,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:33:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:33:09,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:33:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:33:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:33:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:33:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:33:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:33:09,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810951590] [2020-09-21 11:33:09,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:33:09,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 11:33:09,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002846043] [2020-09-21 11:33:09,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:33:09,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:33:09,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:33:09,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:33:09,436 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2020-09-21 11:33:09,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:33:09,468 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-09-21 11:33:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:33:09,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-09-21 11:33:09,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:33:09,470 INFO L225 Difference]: With dead ends: 14 [2020-09-21 11:33:09,470 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:33:09,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:33:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:33:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:33:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:33:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:33:09,472 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-09-21 11:33:09,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:33:09,472 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:33:09,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:33:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:33:09,473 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:33:09,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:33:09,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:33:09,616 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:33:09,617 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:33:09,617 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:33:09,617 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:33:09,617 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:33:09,617 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:33:09,617 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 16) the Hoare annotation is: true [2020-09-21 11:33:09,618 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 16) no Hoare annotation was computed. [2020-09-21 11:33:09,618 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-21 11:33:09,618 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 16) no Hoare annotation was computed. [2020-09-21 11:33:09,618 INFO L268 CegarLoopResult]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2020-09-21 11:33:09,619 INFO L264 CegarLoopResult]: At program point L11-3(lines 11 13) the Hoare annotation is: (let ((.cse0 (div main_~x~0 2))) (let ((.cse1 (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296))) (or (and (< 0 .cse0) (<= main_~x~0 (+ (* 2 .cse0) (* 4294967296 .cse1)))) (and (<= 0 main_~x~0) (<= main_~x~0 (+ .cse0 (* 2147483648 .cse1) (* 2147483648 (div main_~x~0 4294967296)))))))) [2020-09-21 11:33:09,619 INFO L264 CegarLoopResult]: At program point L11-4(lines 11 13) the Hoare annotation is: (let ((.cse0 (div main_~x~0 2))) (let ((.cse1 (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296))) (or (and (< 0 .cse0) (<= main_~x~0 (+ (* 2 .cse0) (* 4294967296 .cse1)))) (and (<= 0 main_~x~0) (<= main_~x~0 (+ .cse0 (* 2147483648 .cse1) (* 2147483648 (div main_~x~0 4294967296)))))))) [2020-09-21 11:33:09,619 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-21 11:33:09,619 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-21 11:33:09,619 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-21 11:33:09,620 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-21 11:33:09,620 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-21 11:33:09,620 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-21 11:33:09,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:33:09 BoogieIcfgContainer [2020-09-21 11:33:09,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:33:09,645 INFO L168 Benchmark]: Toolchain (without parser) took 2219.64 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.8 MB in the beginning and 95.1 MB in the end (delta: 7.7 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:09,647 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:33:09,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.70 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:09,649 INFO L168 Benchmark]: Boogie Preprocessor took 103.33 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 92.8 MB in the beginning and 181.3 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:09,650 INFO L168 Benchmark]: RCFGBuilder took 291.28 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 169.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:09,651 INFO L168 Benchmark]: TraceAbstraction took 1482.83 ms. Allocated memory is still 201.3 MB. Free memory was 168.7 MB in the beginning and 95.1 MB in the end (delta: 73.6 MB). Peak memory consumption was 73.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:09,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.70 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.33 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 92.8 MB in the beginning and 181.3 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 291.28 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 169.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1482.83 ms. Allocated memory is still 201.3 MB. Free memory was 168.7 MB in the beginning and 95.1 MB in the end (delta: 73.6 MB). Peak memory consumption was 73.6 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: 11]: Loop Invariant Derived loop invariant: (0 < x / 2 && x <= 2 * (x / 2) + 4294967296 * ((x / 2 * -2 + x) / 4294967296)) || (0 <= x && x <= x / 2 + 2147483648 * ((x / 2 * -2 + x) / 4294967296) + 2147483648 * (x / 4294967296)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 2 SDslu, 57 SDs, 0 SdLazy, 22 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 109 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 2191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...