/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 enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:06:05,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:06:05,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:06:05,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-18 17:06:06,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:06:06,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:06:06,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:06:06,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:06:06,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:06:06,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:06:06,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:06:06,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:06:06,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:06:06,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:06:06,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:06:06,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:06:06,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 17:06:06,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:06:06,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:06:06,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:06:06,028 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 [2020-08-18 17:06:06,050 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:06:06,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:06:06,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:06:06,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:06:06,052 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:06:06,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:06:06,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:06:06,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:06:06,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:06:06,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:06:06,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:06:06,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:06:06,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:06:06,054 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:06:06,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:06:06,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:06:06,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:06:06,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:06:06,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:06:06,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:06:06,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:06:06,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:06:06,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:06:06,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:06:06,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:06:06,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:06:06,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:06:06,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:06:06,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:06:06,057 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 -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:06:06,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:06:06,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:06:06,363 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:06:06,365 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:06:06,365 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:06:06,367 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-08-18 17:06:06,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ffaffd23/d25c0d1e6c4c4441866170ae4da184a6/FLAG3af15a66a [2020-08-18 17:06:06,881 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:06:06,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-08-18 17:06:06,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ffaffd23/d25c0d1e6c4c4441866170ae4da184a6/FLAG3af15a66a [2020-08-18 17:06:07,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ffaffd23/d25c0d1e6c4c4441866170ae4da184a6 [2020-08-18 17:06:07,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:06:07,306 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:06:07,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:06:07,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:06:07,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:06:07,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:06:07" (1/1) ... [2020-08-18 17:06:07,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbadd11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:07, skipping insertion in model container [2020-08-18 17:06:07,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:06:07" (1/1) ... [2020-08-18 17:06:07,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:06:07,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:06:07,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:06:07,520 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:06:07,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:06:07,555 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:06:07,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:07 WrapperNode [2020-08-18 17:06:07,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:06:07,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:06:07,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:06:07,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:06:07,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:07" (1/1) ... [2020-08-18 17:06:07,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:07" (1/1) ... [2020-08-18 17:06:07,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:07" (1/1) ... [2020-08-18 17:06:07,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:07" (1/1) ... [2020-08-18 17:06:07,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:07" (1/1) ... [2020-08-18 17:06:07,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:07" (1/1) ... [2020-08-18 17:06:07,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:07" (1/1) ... [2020-08-18 17:06:07,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:06:07,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:06:07,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:06:07,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:06:07,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:07" (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 [2020-08-18 17:06:07,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:06:07,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:06:07,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-18 17:06:07,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:06:07,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:06:07,722 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-18 17:06:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:06:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:06:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:06:07,856 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:06:07,857 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 17:06:07,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:06:07 BoogieIcfgContainer [2020-08-18 17:06:07,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:06:07,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:06:07,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:06:07,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:06:07,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:06:07" (1/3) ... [2020-08-18 17:06:07,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c186cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:06:07, skipping insertion in model container [2020-08-18 17:06:07,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:06:07" (2/3) ... [2020-08-18 17:06:07,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c186cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:06:07, skipping insertion in model container [2020-08-18 17:06:07,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:06:07" (3/3) ... [2020-08-18 17:06:07,869 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2020-08-18 17:06:07,880 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:06:07,887 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:06:07,900 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:06:07,924 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:06:07,924 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:06:07,925 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:06:07,925 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:06:07,925 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:06:07,925 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:06:07,925 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:06:07,925 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:06:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-08-18 17:06:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-18 17:06:07,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:07,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:06:07,952 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:06:07,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:07,958 INFO L82 PathProgramCache]: Analyzing trace with hash -417355086, now seen corresponding path program 1 times [2020-08-18 17:06:07,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:07,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778257452] [2020-08-18 17:06:07,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:08,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:06:08,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778257452] [2020-08-18 17:06:08,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:08,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 17:06:08,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584410485] [2020-08-18 17:06:08,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 17:06:08,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:08,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 17:06:08,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:06:08,137 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-08-18 17:06:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:08,173 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-08-18 17:06:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 17:06:08,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-08-18 17:06:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:08,184 INFO L225 Difference]: With dead ends: 29 [2020-08-18 17:06:08,185 INFO L226 Difference]: Without dead ends: 11 [2020-08-18 17:06:08,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:06:08,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-08-18 17:06:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-08-18 17:06:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-08-18 17:06:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-08-18 17:06:08,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-08-18 17:06:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:08,232 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-08-18 17:06:08,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 17:06:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-08-18 17:06:08,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 17:06:08,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:06:08,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:06:08,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:06:08,234 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:06:08,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:06:08,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1648524013, now seen corresponding path program 1 times [2020-08-18 17:06:08,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:06:08,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130172566] [2020-08-18 17:06:08,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:06:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:08,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:06:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:06:08,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130172566] [2020-08-18 17:06:08,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:06:08,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:06:08,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552687031] [2020-08-18 17:06:08,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:06:08,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:06:08,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:06:08,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:06:08,339 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 4 states. [2020-08-18 17:06:08,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:06:08,372 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-08-18 17:06:08,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:06:08,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-08-18 17:06:08,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:06:08,374 INFO L225 Difference]: With dead ends: 11 [2020-08-18 17:06:08,374 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 17:06:08,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:06:08,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 17:06:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 17:06:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 17:06:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 17:06:08,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-08-18 17:06:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:06:08,377 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 17:06:08,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:06:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 17:06:08,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 17:06:08,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:06:08,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 17:06:08,411 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 17:06:08,411 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 17:06:08,411 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-18 17:06:08,412 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-08-18 17:06:08,412 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-08-18 17:06:08,412 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-08-18 17:06:08,412 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 17:06:08,413 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 17:06:08,413 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 17:06:08,413 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 17:06:08,413 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-08-18 17:06:08,414 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2020-08-18 17:06:08,414 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-18 17:06:08,414 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-08-18 17:06:08,414 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: false [2020-08-18 17:06:08,414 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-08-18 17:06:08,415 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: false [2020-08-18 17:06:08,415 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-08-18 17:06:08,415 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 20) no Hoare annotation was computed. [2020-08-18 17:06:08,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:06:08 BoogieIcfgContainer [2020-08-18 17:06:08,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:06:08,425 INFO L168 Benchmark]: Toolchain (without parser) took 1117.79 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 103.4 MB in the beginning and 137.9 MB in the end (delta: -34.5 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:06:08,426 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 17:06:08,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.30 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 94.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-18 17:06:08,428 INFO L168 Benchmark]: Boogie Preprocessor took 101.34 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 94.1 MB in the beginning and 181.5 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:06:08,429 INFO L168 Benchmark]: RCFGBuilder took 201.95 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 171.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:06:08,430 INFO L168 Benchmark]: TraceAbstraction took 560.18 ms. Allocated memory is still 202.4 MB. Free memory was 170.7 MB in the beginning and 137.9 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. [2020-08-18 17:06:08,435 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.30 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 94.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.34 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 94.1 MB in the beginning and 181.5 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 201.95 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 171.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 560.18 ms. Allocated memory is still 202.4 MB. Free memory was 170.7 MB in the beginning and 137.9 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 7 SDslu, 16 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 correct! Received shutdown request...