/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 CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:46:09,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:46:09,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:46:09,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:46:09,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:46:09,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:46:09,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:46:09,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:46:09,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:46:09,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:46:09,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:46:09,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:46:09,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:46:09,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:46:09,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:46:09,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:46:09,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:46:09,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:46:09,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:46:09,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:46:09,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:46:09,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:46:09,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:46:09,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:46:09,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:46:09,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:46:09,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:46:09,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:46:09,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 21:46:09,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:46:09,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:46:09,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:46:09,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:46:09,951 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:46:09,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:46:09,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:46:09,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:46:09,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:46:09,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:46:09,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:46:09,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:46:09,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:46:09,953 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:46:09,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:46:09,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:46:09,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:46:09,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:46:09,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:46:09,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:46:09,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:46:09,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:46:09,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:46:09,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:46:09,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:46:09,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:46:09,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:46:09,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:46:09,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:46:09,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:46:10,226 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:46:10,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:46:10,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:46:10,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:46:10,246 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:46:10,247 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-1.c [2020-07-19 21:46:10,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3e05e43/731c0ba2be254bd8add3647c22fbca2e/FLAGcb4dc1353 [2020-07-19 21:46:10,765 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:46:10,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c [2020-07-19 21:46:10,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3e05e43/731c0ba2be254bd8add3647c22fbca2e/FLAGcb4dc1353 [2020-07-19 21:46:11,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3e05e43/731c0ba2be254bd8add3647c22fbca2e [2020-07-19 21:46:11,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:46:11,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:46:11,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:46:11,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:46:11,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:46:11,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:46:11" (1/1) ... [2020-07-19 21:46:11,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3755768f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:11, skipping insertion in model container [2020-07-19 21:46:11,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:46:11" (1/1) ... [2020-07-19 21:46:11,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:46:11,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:46:11,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:46:11,413 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:46:11,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:46:11,445 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:46:11,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:11 WrapperNode [2020-07-19 21:46:11,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:46:11,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:46:11,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:46:11,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:46:11,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:11" (1/1) ... [2020-07-19 21:46:11,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:11" (1/1) ... [2020-07-19 21:46:11,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:11" (1/1) ... [2020-07-19 21:46:11,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:11" (1/1) ... [2020-07-19 21:46:11,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:11" (1/1) ... [2020-07-19 21:46:11,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:11" (1/1) ... [2020-07-19 21:46:11,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:11" (1/1) ... [2020-07-19 21:46:11,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:46:11,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:46:11,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:46:11,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:46:11,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-19 21:46:11,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:46:11,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:46:11,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:46:11,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:46:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:46:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:46:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-19 21:46:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-19 21:46:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:46:11,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:46:11,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:46:11,823 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:46:11,823 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 21:46:11,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:46:11 BoogieIcfgContainer [2020-07-19 21:46:11,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:46:11,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:46:11,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:46:11,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:46:11,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:46:11" (1/3) ... [2020-07-19 21:46:11,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d773f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:46:11, skipping insertion in model container [2020-07-19 21:46:11,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:11" (2/3) ... [2020-07-19 21:46:11,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d773f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:46:11, skipping insertion in model container [2020-07-19 21:46:11,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:46:11" (3/3) ... [2020-07-19 21:46:11,836 INFO L109 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2020-07-19 21:46:11,845 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:46:11,854 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:46:11,872 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:46:11,899 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:46:11,899 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:46:11,899 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:46:11,899 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:46:11,900 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:46:11,900 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:46:11,900 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:46:11,900 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:46:11,920 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-19 21:46:11,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 21:46:11,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:11,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:46:11,929 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:11,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:11,935 INFO L82 PathProgramCache]: Analyzing trace with hash -859010367, now seen corresponding path program 1 times [2020-07-19 21:46:11,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:11,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276863433] [2020-07-19 21:46:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e7f7933 [2020-07-19 21:46:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:12,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276863433] [2020-07-19 21:46:12,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:46:12,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-19 21:46:12,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441176791] [2020-07-19 21:46:12,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-19 21:46:12,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:12,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-19 21:46:12,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 21:46:12,091 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-07-19 21:46:12,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:12,113 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-07-19 21:46:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-19 21:46:12,115 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-19 21:46:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:12,123 INFO L225 Difference]: With dead ends: 33 [2020-07-19 21:46:12,123 INFO L226 Difference]: Without dead ends: 14 [2020-07-19 21:46:12,127 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 [2020-07-19 21:46:12,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-19 21:46:12,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-19 21:46:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-19 21:46:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-07-19 21:46:12,163 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2020-07-19 21:46:12,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:12,164 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-07-19 21:46:12,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-19 21:46:12,164 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-07-19 21:46:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 21:46:12,165 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:12,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:46:12,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:46:12,166 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:12,166 INFO L82 PathProgramCache]: Analyzing trace with hash -873786703, now seen corresponding path program 1 times [2020-07-19 21:46:12,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:12,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925581328] [2020-07-19 21:46:12,167 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e7f7933 [2020-07-19 21:46:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:46:12,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:46:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:46:12,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:46:12,277 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:46:12,277 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:46:12,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:46:12,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:46:12 BoogieIcfgContainer [2020-07-19 21:46:12,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:46:12,305 INFO L168 Benchmark]: Toolchain (without parser) took 1098.86 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 143.9 MB in the end (delta: -41.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:12,306 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-19 21:46:12,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.19 ms. Allocated memory is still 137.4 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:12,308 INFO L168 Benchmark]: Boogie Preprocessor took 114.52 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 180.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:12,309 INFO L168 Benchmark]: RCFGBuilder took 265.88 ms. Allocated memory is still 201.3 MB. Free memory was 180.5 MB in the beginning and 167.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:12,310 INFO L168 Benchmark]: TraceAbstraction took 473.95 ms. Allocated memory is still 201.3 MB. Free memory was 166.7 MB in the beginning and 143.9 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:12,314 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 239.19 ms. Allocated memory is still 137.4 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.52 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 180.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.88 ms. Allocated memory is still 201.3 MB. Free memory was 180.5 MB in the beginning and 167.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 473.95 ms. Allocated memory is still 201.3 MB. Free memory was 166.7 MB in the beginning and 143.9 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L15] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L15] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L16] unsigned int d1=1, d2=1, d3=1; [L17] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L17] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L19] COND FALSE !(x1>0 && x2>0 && x3>0) VAL [c1=2, c2=3, d1=1, d2=1, d3=1, x1=0, x2=0, x3=-4294967295] [L28] CALL __VERIFIER_assert(x1==0 && x2==0 && x3==0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...