/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:57:21,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:57:21,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:57:21,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 16:57:21,374 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 [2020-08-22 16:57:21,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:57:21,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:57:21,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:57:21,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:57:21,397 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:57:21,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:57:21,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:57:21,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:57:21,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:57:21,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:57:21,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:57:21,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:57:21,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:57:21,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:57:21,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:57:21,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:57:21,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:57:21,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:57:21,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:57:21,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:57:21,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:57:21,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:57:21,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:57:21,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:57:21,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:57:21,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:57:21,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:57:21,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:57:21,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:57:21,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:57:21,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:57:21,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:57:21,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:57:21,745 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:57:21,745 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:57:21,746 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-08-22 16:57:21,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cb2045db/4ee45704b66841a0bce2d2477dad79e8/FLAG316295dbc [2020-08-22 16:57:22,257 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:57:22,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-08-22 16:57:22,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cb2045db/4ee45704b66841a0bce2d2477dad79e8/FLAG316295dbc [2020-08-22 16:57:22,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cb2045db/4ee45704b66841a0bce2d2477dad79e8 [2020-08-22 16:57:22,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:57:22,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:57:22,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:22,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:57:22,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:57:22,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@477ebec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22, skipping insertion in model container [2020-08-22 16:57:22,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:57:22,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:57:22,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:22,918 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:57:22,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:22,949 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:57:22,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22 WrapperNode [2020-08-22 16:57:22,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:22,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:57:22,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:57:22,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:57:22,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:23,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:23,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:23,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:23,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:57:23,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:57:23,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:57:23,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:57:23,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (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 16:57:23,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:57:23,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:57:23,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:57:23,144 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 16:57:23,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:57:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:57:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:57:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 16:57:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:57:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:57:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:57:23,299 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:57:23,299 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-22 16:57:23,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:23 BoogieIcfgContainer [2020-08-22 16:57:23,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:57:23,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:57:23,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:57:23,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:57:23,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:57:22" (1/3) ... [2020-08-22 16:57:23,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774c876f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:23, skipping insertion in model container [2020-08-22 16:57:23,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (2/3) ... [2020-08-22 16:57:23,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774c876f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:23, skipping insertion in model container [2020-08-22 16:57:23,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:23" (3/3) ... [2020-08-22 16:57:23,312 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2020-08-22 16:57:23,323 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:57:23,331 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:57:23,347 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:57:23,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:57:23,388 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:57:23,389 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:57:23,389 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:57:23,389 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:57:23,389 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:57:23,390 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:57:23,390 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:57:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-22 16:57:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 16:57:23,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:23,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:23,427 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:23,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:23,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1783967560, now seen corresponding path program 1 times [2020-08-22 16:57:23,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:23,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965751891] [2020-08-22 16:57:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:23,621 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 16:57:23,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965751891] [2020-08-22 16:57:23,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:23,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:57:23,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236618560] [2020-08-22 16:57:23,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:57:23,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:23,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:57:23,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:57:23,650 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-08-22 16:57:23,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:23,714 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2020-08-22 16:57:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:57:23,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-08-22 16:57:23,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:23,728 INFO L225 Difference]: With dead ends: 37 [2020-08-22 16:57:23,728 INFO L226 Difference]: Without dead ends: 19 [2020-08-22 16:57:23,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 16:57:23,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-22 16:57:23,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-08-22 16:57:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-22 16:57:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-08-22 16:57:23,781 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2020-08-22 16:57:23,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:23,782 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-08-22 16:57:23,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:57:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-08-22 16:57:23,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:57:23,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:23,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:23,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:57:23,785 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:23,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:23,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1698359207, now seen corresponding path program 1 times [2020-08-22 16:57:23,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:23,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614215748] [2020-08-22 16:57:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:23,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:23,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:57:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:23,912 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 16:57:23,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614215748] [2020-08-22 16:57:23,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:23,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:57:23,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335226647] [2020-08-22 16:57:23,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:57:23,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:23,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:57:23,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:57:23,918 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-08-22 16:57:24,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:24,023 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-08-22 16:57:24,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:57:24,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-08-22 16:57:24,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:24,025 INFO L225 Difference]: With dead ends: 17 [2020-08-22 16:57:24,025 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:57:24,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:57:24,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:57:24,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:57:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:57:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:57:24,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-08-22 16:57:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:24,028 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:57:24,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:57:24,028 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:57:24,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:57:24,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:57:24,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:57:24,128 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:57:24,129 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-08-22 16:57:24,129 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:57:24,129 INFO L264 CegarLoopResult]: At program point evalENTRY(lines 12 19) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2020-08-22 16:57:24,130 INFO L268 CegarLoopResult]: For program point L14-1(lines 12 19) no Hoare annotation was computed. [2020-08-22 16:57:24,130 INFO L268 CegarLoopResult]: For program point evalEXIT(lines 12 19) no Hoare annotation was computed. [2020-08-22 16:57:24,130 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:57:24,130 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= ~x~0 0) [2020-08-22 16:57:24,131 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:57:24,131 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:57:24,131 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-08-22 16:57:24,131 INFO L264 CegarLoopResult]: At program point L27(lines 22 33) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2020-08-22 16:57:24,132 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2020-08-22 16:57:24,132 INFO L264 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2020-08-22 16:57:24,132 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 22 33) no Hoare annotation was computed. [2020-08-22 16:57:24,132 INFO L264 CegarLoopResult]: At program point L24-1(lines 24 28) the Hoare annotation is: (not (= |old(~x~0)| 0)) [2020-08-22 16:57:24,133 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 22 33) no Hoare annotation was computed. [2020-08-22 16:57:24,133 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-08-22 16:57:24,133 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-08-22 16:57:24,133 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-22 16:57:24,133 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-08-22 16:57:24,134 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-08-22 16:57:24,134 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-08-22 16:57:24,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:57:24 BoogieIcfgContainer [2020-08-22 16:57:24,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:57:24,144 INFO L168 Benchmark]: Toolchain (without parser) took 1437.59 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.2 MB in the beginning and 120.8 MB in the end (delta: -18.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:24,146 INFO L168 Benchmark]: CDTParser took 1.12 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:57:24,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.57 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 92.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:24,148 INFO L168 Benchmark]: Boogie Preprocessor took 121.77 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 180.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:24,149 INFO L168 Benchmark]: RCFGBuilder took 231.12 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 168.7 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:24,150 INFO L168 Benchmark]: TraceAbstraction took 836.64 ms. Allocated memory is still 201.3 MB. Free memory was 168.7 MB in the beginning and 120.8 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:24,154 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.12 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.57 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 92.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.77 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 180.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 231.12 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 168.7 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 836.64 ms. Allocated memory is still 201.3 MB. Free memory was 168.7 MB in the beginning and 120.8 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 23 SDslu, 26 SDs, 0 SdLazy, 14 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 44 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 476 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...