/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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-regression/test11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 03:50:16,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:50:16,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:50:16,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 03:50:16,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:50:16,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:50:16,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:50:16,789 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 [2019-11-07 03:50:16,803 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:50:16,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:50:16,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:50:16,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:50:16,805 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:50:16,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:50:16,806 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:50:16,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:50:16,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:50:16,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:50:16,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:50:16,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:50:16,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:50:16,807 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:50:16,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:50:16,807 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:50:16,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:50:16,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:50:16,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:50:16,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:50:16,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:50:16,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:50:16,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:50:16,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:50:16,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:50:16,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:50:16,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:50:16,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:50:16,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 03:50:17,153 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:50:17,174 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:50:17,177 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:50:17,179 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:50:17,179 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:50:17,180 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test11.c [2019-11-07 03:50:17,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f3fe41a/54b8d214e93a45708ac2b5bc7548ab58/FLAGfc85f5768 [2019-11-07 03:50:17,753 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:50:17,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test11.c [2019-11-07 03:50:17,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f3fe41a/54b8d214e93a45708ac2b5bc7548ab58/FLAGfc85f5768 [2019-11-07 03:50:18,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f3fe41a/54b8d214e93a45708ac2b5bc7548ab58 [2019-11-07 03:50:18,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:50:18,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:50:18,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:50:18,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:50:18,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:50:18,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:50:18" (1/1) ... [2019-11-07 03:50:18,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de5d45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:18, skipping insertion in model container [2019-11-07 03:50:18,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:50:18" (1/1) ... [2019-11-07 03:50:18,197 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:50:18,240 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:50:18,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:50:18,603 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:50:18,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:50:18,632 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:50:18,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:18 WrapperNode [2019-11-07 03:50:18,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:50:18,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:50:18,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:50:18,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:50:18,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:18" (1/1) ... [2019-11-07 03:50:18,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:18" (1/1) ... [2019-11-07 03:50:18,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:18" (1/1) ... [2019-11-07 03:50:18,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:18" (1/1) ... [2019-11-07 03:50:18,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:18" (1/1) ... [2019-11-07 03:50:18,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:18" (1/1) ... [2019-11-07 03:50:18,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:18" (1/1) ... [2019-11-07 03:50:18,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:50:18,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:50:18,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:50:18,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:50:18,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:18" (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 [2019-11-07 03:50:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:50:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:50:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-11-07 03:50:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:50:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:50:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 03:50:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-07 03:50:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-11-07 03:50:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:50:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 03:50:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 03:50:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 03:50:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 03:50:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:50:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:50:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:50:19,235 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:50:19,235 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 03:50:19,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:19 BoogieIcfgContainer [2019-11-07 03:50:19,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:50:19,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:50:19,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:50:19,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:50:19,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:50:18" (1/3) ... [2019-11-07 03:50:19,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40de44bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:19, skipping insertion in model container [2019-11-07 03:50:19,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:18" (2/3) ... [2019-11-07 03:50:19,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40de44bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:19, skipping insertion in model container [2019-11-07 03:50:19,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:19" (3/3) ... [2019-11-07 03:50:19,244 INFO L109 eAbstractionObserver]: Analyzing ICFG test11.c [2019-11-07 03:50:19,254 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:50:19,262 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:50:19,272 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:50:19,297 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:50:19,297 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:50:19,297 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:50:19,297 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:50:19,297 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:50:19,297 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:50:19,298 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:50:19,298 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:50:19,310 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-07 03:50:19,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 03:50:19,315 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:50:19,315 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:50:19,317 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:50:19,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:50:19,322 INFO L82 PathProgramCache]: Analyzing trace with hash 109693310, now seen corresponding path program 1 times [2019-11-07 03:50:19,329 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:50:19,330 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450599201] [2019-11-07 03:50:19,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:50:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:50:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:50:19,576 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450599201] [2019-11-07 03:50:19,577 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:50:19,578 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 03:50:19,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928544278] [2019-11-07 03:50:19,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 03:50:19,585 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:50:19,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 03:50:19,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 03:50:19,602 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2019-11-07 03:50:19,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:50:19,643 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-07 03:50:19,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 03:50:19,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-07 03:50:19,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:50:19,654 INFO L225 Difference]: With dead ends: 23 [2019-11-07 03:50:19,654 INFO L226 Difference]: Without dead ends: 13 [2019-11-07 03:50:19,658 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 03:50:19,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-07 03:50:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-07 03:50:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-07 03:50:19,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2019-11-07 03:50:19,702 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 11 [2019-11-07 03:50:19,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:50:19,702 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2019-11-07 03:50:19,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 03:50:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2019-11-07 03:50:19,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 03:50:19,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:50:19,704 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:50:19,704 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:50:19,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:50:19,705 INFO L82 PathProgramCache]: Analyzing trace with hash -894472818, now seen corresponding path program 1 times [2019-11-07 03:50:19,705 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:50:19,705 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86446221] [2019-11-07 03:50:19,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:50:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:50:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:50:19,795 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86446221] [2019-11-07 03:50:19,798 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:50:19,798 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 03:50:19,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924615285] [2019-11-07 03:50:19,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 03:50:19,803 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:50:19,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 03:50:19,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 03:50:19,804 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 4 states. [2019-11-07 03:50:19,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:50:19,825 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-11-07 03:50:19,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 03:50:19,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-07 03:50:19,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:50:19,826 INFO L225 Difference]: With dead ends: 13 [2019-11-07 03:50:19,826 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 03:50:19,827 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 03:50:19,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 03:50:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 03:50:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 03:50:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 03:50:19,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-11-07 03:50:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:50:19,829 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 03:50:19,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 03:50:19,829 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 03:50:19,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 03:50:19,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 03:50:19,874 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 03:50:19,874 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 03:50:19,875 INFO L446 ceAbstractionStarter]: At program point get_dummyENTRY(lines 7 10) the Hoare annotation is: true [2019-11-07 03:50:19,875 INFO L443 ceAbstractionStarter]: For program point get_dummyEXIT(lines 7 10) no Hoare annotation was computed. [2019-11-07 03:50:19,875 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 03:50:19,875 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 03:50:19,875 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 03:50:19,875 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 03:50:19,876 INFO L439 ceAbstractionStarter]: At program point L25(lines 12 32) the Hoare annotation is: false [2019-11-07 03:50:19,876 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 32) no Hoare annotation was computed. [2019-11-07 03:50:19,876 INFO L439 ceAbstractionStarter]: At program point L17(line 17) the Hoare annotation is: (and (= |main_~#c~0.offset| main_~pc~0.offset) (not (= main_~pc~0.base 0)) (= main_~pc~0.base |main_~#c~0.base|)) [2019-11-07 03:50:19,876 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-11-07 03:50:19,876 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 32) no Hoare annotation was computed. [2019-11-07 03:50:19,877 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2019-11-07 03:50:19,878 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 32) the Hoare annotation is: true [2019-11-07 03:50:19,878 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-11-07 03:50:19,878 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 21) no Hoare annotation was computed. [2019-11-07 03:50:19,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:50:19 BoogieIcfgContainer [2019-11-07 03:50:19,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 03:50:19,893 INFO L168 Benchmark]: Toolchain (without parser) took 1754.02 ms. Allocated memory was 149.4 MB in the beginning and 202.9 MB in the end (delta: 53.5 MB). Free memory was 106.4 MB in the beginning and 122.3 MB in the end (delta: -16.0 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:19,895 INFO L168 Benchmark]: CDTParser took 1.23 ms. Allocated memory is still 149.4 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 03:50:19,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.14 ms. Allocated memory is still 149.4 MB. Free memory was 106.1 MB in the beginning and 96.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:19,899 INFO L168 Benchmark]: Boogie Preprocessor took 118.73 ms. Allocated memory was 149.4 MB in the beginning and 202.9 MB in the end (delta: 53.5 MB). Free memory was 96.2 MB in the beginning and 181.1 MB in the end (delta: -84.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:19,900 INFO L168 Benchmark]: RCFGBuilder took 474.80 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 157.9 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:19,902 INFO L168 Benchmark]: TraceAbstraction took 651.16 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 122.3 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:19,912 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.23 ms. Allocated memory is still 149.4 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 477.14 ms. Allocated memory is still 149.4 MB. Free memory was 106.1 MB in the beginning and 96.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.73 ms. Allocated memory was 149.4 MB in the beginning and 202.9 MB in the end (delta: 53.5 MB). Free memory was 96.2 MB in the beginning and 181.1 MB in the end (delta: -84.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.80 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 157.9 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 651.16 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 122.3 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 6 SDslu, 36 SDs, 0 SdLazy, 6 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 7 PreInvPairs, 7 NumberOfFragments, 17 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 511 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...