/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:05:51,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:05:51,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:05:51,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 19:05:51,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:05:51,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:05:51,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:05:51,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:05:51,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:05:51,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:05:51,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:05:51,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:05:51,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:05:51,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:05:51,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:05:51,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:05:51,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:05:51,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:05:51,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:05:51,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:05:51,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:05:51,859 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:05:51,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:05:51,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:05:51,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:05:51,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:05:51,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:05:51,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:05:51,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:05:51,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:05:51,861 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:05:51,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:05:51,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:05:51,864 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:05:51,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:05:51,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:05:51,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:05:51,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:05:51,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:05:51,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:05:51,865 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:05:52,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:05:52,253 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:05:52,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:05:52,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:05:52,265 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:05:52,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-08-22 19:05:52,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/412e533b0/8bc33d9acfb04fd7a22ee54c2d64f746/FLAG015797ea9 [2020-08-22 19:05:52,985 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:05:52,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-08-22 19:05:52,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/412e533b0/8bc33d9acfb04fd7a22ee54c2d64f746/FLAG015797ea9 [2020-08-22 19:05:53,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/412e533b0/8bc33d9acfb04fd7a22ee54c2d64f746 [2020-08-22 19:05:53,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:05:53,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:05:53,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:05:53,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:05:53,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:05:53,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:05:53" (1/1) ... [2020-08-22 19:05:53,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d65e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:05:53, skipping insertion in model container [2020-08-22 19:05:53,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:05:53" (1/1) ... [2020-08-22 19:05:53,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:05:53,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:05:53,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:05:53,585 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:05:53,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:05:53,623 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:05:53,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:05:53 WrapperNode [2020-08-22 19:05:53,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:05:53,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:05:53,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:05:53,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:05:53,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:05:53" (1/1) ... [2020-08-22 19:05:53,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:05:53" (1/1) ... [2020-08-22 19:05:53,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:05:53" (1/1) ... [2020-08-22 19:05:53,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:05:53" (1/1) ... [2020-08-22 19:05:53,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:05:53" (1/1) ... [2020-08-22 19:05:53,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:05:53" (1/1) ... [2020-08-22 19:05:53,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:05:53" (1/1) ... [2020-08-22 19:05:53,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:05:53,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:05:53,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:05:53,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:05:53,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:05:53" (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 [2020-08-22 19:05:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:05:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:05:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-22 19:05:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:05:53,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:05:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-22 19:05:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:05:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:05:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:05:54,010 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:05:54,011 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 19:05:54,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:05:54 BoogieIcfgContainer [2020-08-22 19:05:54,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:05:54,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:05:54,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:05:54,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:05:54,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:05:53" (1/3) ... [2020-08-22 19:05:54,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4b12c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:05:54, skipping insertion in model container [2020-08-22 19:05:54,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:05:53" (2/3) ... [2020-08-22 19:05:54,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4b12c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:05:54, skipping insertion in model container [2020-08-22 19:05:54,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:05:54" (3/3) ... [2020-08-22 19:05:54,028 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2020-08-22 19:05:54,042 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:05:54,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:05:54,071 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:05:54,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:05:54,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:05:54,097 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:05:54,097 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:05:54,097 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:05:54,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:05:54,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:05:54,098 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:05:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-22 19:05:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 19:05:54,130 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:54,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:54,132 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:54,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:54,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1077921841, now seen corresponding path program 1 times [2020-08-22 19:05:54,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:54,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842945310] [2020-08-22 19:05:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:54,223 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:54,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:05:54,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842945310] [2020-08-22 19:05:54,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:54,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:05:54,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853669169] [2020-08-22 19:05:54,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:05:54,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:54,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:05:54,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:05:54,376 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2020-08-22 19:05:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:54,434 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-08-22 19:05:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:05:54,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-08-22 19:05:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:54,450 INFO L225 Difference]: With dead ends: 31 [2020-08-22 19:05:54,452 INFO L226 Difference]: Without dead ends: 13 [2020-08-22 19:05:54,460 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 [2020-08-22 19:05:54,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-08-22 19:05:54,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-08-22 19:05:54,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-08-22 19:05:54,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-08-22 19:05:54,575 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2020-08-22 19:05:54,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:54,576 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-08-22 19:05:54,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:05:54,576 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-08-22 19:05:54,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 19:05:54,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:54,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:54,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:05:54,579 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:54,580 INFO L82 PathProgramCache]: Analyzing trace with hash -798013776, now seen corresponding path program 1 times [2020-08-22 19:05:54,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:54,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318367725] [2020-08-22 19:05:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:54,585 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:54,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:05:54,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318367725] [2020-08-22 19:05:54,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:54,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:05:54,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619716027] [2020-08-22 19:05:54,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:05:54,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:54,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:05:54,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:05:54,705 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 4 states. [2020-08-22 19:05:54,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:54,757 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-08-22 19:05:54,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:05:54,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-08-22 19:05:54,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:54,759 INFO L225 Difference]: With dead ends: 13 [2020-08-22 19:05:54,759 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 19:05:54,761 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 [2020-08-22 19:05:54,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 19:05:54,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 19:05:54,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 19:05:54,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 19:05:54,763 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-08-22 19:05:54,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:54,764 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 19:05:54,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:05:54,764 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 19:05:54,764 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 19:05:54,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:05:54,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 19:05:54,972 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 19:05:54,973 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 19:05:54,973 INFO L271 CegarLoopResult]: At program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) the Hoare annotation is: true [2020-08-22 19:05:54,974 INFO L271 CegarLoopResult]: At program point __blast_assertEXIT(lines 4 7) the Hoare annotation is: true [2020-08-22 19:05:54,975 INFO L271 CegarLoopResult]: At program point __blast_assertFINAL(lines 4 7) the Hoare annotation is: true [2020-08-22 19:05:54,975 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-08-22 19:05:54,975 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 19:05:54,975 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 19:05:54,976 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 19:05:54,977 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 19:05:54,978 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-08-22 19:05:54,980 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 13 20) the Hoare annotation is: (= main_~z~0 0) [2020-08-22 19:05:54,981 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (< 0 (+ main_~a~0 1)) (<= main_~a~0 0) (= main_~z~0 0)) [2020-08-22 19:05:54,982 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= main_~z~0 0) [2020-08-22 19:05:54,982 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: false [2020-08-22 19:05:54,983 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-08-22 19:05:54,983 INFO L264 CegarLoopResult]: At program point L18-3(line 18) the Hoare annotation is: (= main_~z~0 0) [2020-08-22 19:05:54,983 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-08-22 19:05:54,983 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: false [2020-08-22 19:05:54,984 INFO L264 CegarLoopResult]: At program point L16-3(line 16) the Hoare annotation is: (= main_~z~0 0) [2020-08-22 19:05:54,984 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 13 20) the Hoare annotation is: (= main_~z~0 0) [2020-08-22 19:05:55,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:05:55 BoogieIcfgContainer [2020-08-22 19:05:55,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:05:55,011 INFO L168 Benchmark]: Toolchain (without parser) took 1660.11 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 106.0 MB in the beginning and 131.4 MB in the end (delta: -25.4 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:05:55,013 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 147.8 MB. Free memory was 123.5 MB in the beginning and 123.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 19:05:55,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.05 ms. Allocated memory is still 147.8 MB. Free memory was 105.6 MB in the beginning and 96.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:05:55,015 INFO L168 Benchmark]: Boogie Preprocessor took 36.86 ms. Allocated memory is still 147.8 MB. Free memory was 96.4 MB in the beginning and 95.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:05:55,016 INFO L168 Benchmark]: RCFGBuilder took 353.31 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 95.2 MB in the beginning and 173.0 MB in the end (delta: -77.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-22 19:05:55,017 INFO L168 Benchmark]: TraceAbstraction took 988.74 ms. Allocated memory is still 203.9 MB. Free memory was 173.0 MB in the beginning and 131.4 MB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:05:55,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 147.8 MB. Free memory was 123.5 MB in the beginning and 123.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.05 ms. Allocated memory is still 147.8 MB. Free memory was 105.6 MB in the beginning and 96.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.86 ms. Allocated memory is still 147.8 MB. Free memory was 96.4 MB in the beginning and 95.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 353.31 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 95.2 MB in the beginning and 173.0 MB in the end (delta: -77.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 988.74 ms. Allocated memory is still 203.9 MB. Free memory was 173.0 MB in the beginning and 131.4 MB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 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 - ProcedureContractResult [Line: 4]: Procedure Contract for __blast_assert Derived contract for procedure __blast_assert: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: z == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 20 SDs, 0 SdLazy, 8 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, 0.1s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 29 PreInvPairs, 36 NumberOfFragments, 42 HoareAnnotationTreeSize, 29 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...