/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/test10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 03:50:16,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:50:16,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:50:16,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 03:50:16,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 03:50:16,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 03:50:16,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 03:50:16,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 03:50:16,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 03:50:16,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 03:50:16,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 03:50:16,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 03:50:16,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:50:16,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:50:16,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:50:16,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:50:16,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:50:16,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:50:16,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:50:16,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:50:16,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:50:16,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:50:16,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:50:16,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:50:16,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 03:50:16,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:50:16,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:50:16,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:50:16,396 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 03:50:16,416 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:50:16,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:50:16,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:50:16,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:50:16,421 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:50:16,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:50:16,422 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:50:16,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:50:16,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:50:16,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:50:16,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:50:16,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:50:16,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:50:16,424 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:50:16,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:50:16,425 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:50:16,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:50:16,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:50:16,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:50:16,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:50:16,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:50:16,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:50:16,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:50:16,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:50:16,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:50:16,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:50:16,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:50:16,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:50:16,427 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 03:50:16,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:50:16,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:50:16,815 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:50:16,816 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:50:16,817 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:50:16,818 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test10.c [2019-11-07 03:50:16,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fd385a14/9ad2351470d44154939c1a144ff109b6/FLAGaee09d0c5 [2019-11-07 03:50:17,327 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:50:17,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test10.c [2019-11-07 03:50:17,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fd385a14/9ad2351470d44154939c1a144ff109b6/FLAGaee09d0c5 [2019-11-07 03:50:17,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fd385a14/9ad2351470d44154939c1a144ff109b6 [2019-11-07 03:50:17,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:50:17,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:50:17,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:50:17,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:50:17,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:50:17,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:50:17" (1/1) ... [2019-11-07 03:50:17,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6cc55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:17, skipping insertion in model container [2019-11-07 03:50:17,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:50:17" (1/1) ... [2019-11-07 03:50:17,782 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:50:17,822 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:50:18,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:50:18,043 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:50:18,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:50:18,078 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:50:18,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:18 WrapperNode [2019-11-07 03:50:18,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:50:18,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:50:18,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:50:18,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:50:18,177 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 03:50:18,177 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 03:50:18,185 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 03:50:18,187 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 03:50:18,198 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 03:50:18,201 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 03:50:18,202 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 03:50:18,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:50:18,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:50:18,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:50:18,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:50:18,206 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 03:50:18,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:50:18,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:50:18,257 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-07 03:50:18,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:50:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:50:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 03:50:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-07 03:50:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 03:50:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 03:50:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:50:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 03:50:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 03:50:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:50:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 03:50:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 03:50:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 03:50:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:50:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:50:18,736 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:50:18,736 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 03:50:18,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:18 BoogieIcfgContainer [2019-11-07 03:50:18,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:50:18,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:50:18,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:50:18,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:50:18,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:50:17" (1/3) ... [2019-11-07 03:50:18,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed9a780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:18, skipping insertion in model container [2019-11-07 03:50:18,744 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 03:50:18,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed9a780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:18, skipping insertion in model container [2019-11-07 03:50:18,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:18" (3/3) ... [2019-11-07 03:50:18,746 INFO L109 eAbstractionObserver]: Analyzing ICFG test10.c [2019-11-07 03:50:18,755 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:50:18,761 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:50:18,772 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:50:18,797 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:50:18,797 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:50:18,797 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:50:18,797 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:50:18,798 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:50:18,798 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:50:18,798 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:50:18,798 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:50:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-07 03:50:18,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 03:50:18,818 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:50:18,819 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:50:18,821 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:50:18,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:50:18,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1541481710, now seen corresponding path program 1 times [2019-11-07 03:50:18,834 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:50:18,834 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847511350] [2019-11-07 03:50:18,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:50:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:50:19,611 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 03:50:19,612 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847511350] [2019-11-07 03:50:19,613 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:50:19,613 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 03:50:19,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281348641] [2019-11-07 03:50:19,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 03:50:19,621 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:50:19,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 03:50:19,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 03:50:19,644 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 8 states. [2019-11-07 03:50:20,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:50:20,287 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2019-11-07 03:50:20,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 03:50:20,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-07 03:50:20,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:50:20,297 INFO L225 Difference]: With dead ends: 20 [2019-11-07 03:50:20,298 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 03:50:20,302 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-11-07 03:50:20,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 03:50:20,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 03:50:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 03:50:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 03:50:20,334 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-07 03:50:20,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:50:20,334 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 03:50:20,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 03:50:20,335 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 03:50:20,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 03:50:20,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 03:50:20,610 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~pp2~0.base |old(~pp2~0.base)|) (= |old(~pp2~0.offset)| ~pp2~0.offset)) [2019-11-07 03:50:20,611 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 03:50:20,611 INFO L443 ceAbstractionStarter]: For program point fEXIT(lines 9 14) no Hoare annotation was computed. [2019-11-07 03:50:20,611 INFO L439 ceAbstractionStarter]: At program point fENTRY(lines 9 14) the Hoare annotation is: (or (not (= ~pp1~0.base |~#p1~0.base|)) (not (= (select (select |old(#memory_$Pointer$.base)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|) |~#b~0.base|)) (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (not (= ~pp1~0.offset |~#p1~0.offset|)) (not (= (select (select |old(#memory_$Pointer$.offset)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|) |~#b~0.offset|)) (= ~pp1~0.base |~#b~0.base|) (and (= (select |old(#memory_$Pointer$.base)| ~pp2~0.base) (select |#memory_$Pointer$.base| ~pp2~0.base)) (= ~pp2~0.base |old(~pp2~0.base)|) (= (select |old(#memory_$Pointer$.offset)| ~pp2~0.base) (select |#memory_$Pointer$.offset| ~pp2~0.base)) (= |old(~pp2~0.offset)| ~pp2~0.offset))) [2019-11-07 03:50:20,611 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 03:50:20,612 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#p1~0.base|)) (not (= |~#p2~0.base| |~#a~0.base|)) (not (= |~#b~0.base| |~#p2~0.base|)) (not (= |~#b~0.base| |~#a~0.base|)) (not (= |~#p1~0.base| |~#a~0.base|))) [2019-11-07 03:50:20,612 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 03:50:20,612 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 03:50:20,612 INFO L439 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (or (and (= |~#b~0.base| (select (select |#memory_$Pointer$.base| ~pp2~0.base) ~pp2~0.offset)) (= |~#p1~0.base| ~pp1~0.base) (= |~#p1~0.offset| ~pp1~0.offset) (= (select (select |#memory_$Pointer$.offset| ~pp2~0.base) ~pp2~0.offset) |~#b~0.offset|)) (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (= |~#p1~0.base| |~#b~0.base|)) [2019-11-07 03:50:20,613 INFO L443 ceAbstractionStarter]: For program point L31-1(line 31) no Hoare annotation was computed. [2019-11-07 03:50:20,613 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 16 49) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (and (= ~pp2~0.base |old(~pp2~0.base)|) (= (select |old(#memory_$Pointer$.base)| ~pp2~0.base) (select |#memory_$Pointer$.base| ~pp2~0.base)) (= (select |old(#memory_$Pointer$.offset)| ~pp2~0.base) (select |#memory_$Pointer$.offset| ~pp2~0.base)) (= |old(~pp2~0.offset)| ~pp2~0.offset)) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (= |~#p1~0.base| |~#b~0.base|)) [2019-11-07 03:50:20,613 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 16 49) no Hoare annotation was computed. [2019-11-07 03:50:20,614 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 47) no Hoare annotation was computed. [2019-11-07 03:50:20,614 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 16 49) no Hoare annotation was computed. [2019-11-07 03:50:20,614 INFO L439 ceAbstractionStarter]: At program point L42(lines 16 49) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (= |~#p1~0.base| |~#b~0.base|)) [2019-11-07 03:50:20,614 INFO L443 ceAbstractionStarter]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2019-11-07 03:50:20,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:50:20 BoogieIcfgContainer [2019-11-07 03:50:20,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 03:50:20,633 INFO L168 Benchmark]: Toolchain (without parser) took 2900.69 ms. Allocated memory was 147.8 MB in the beginning and 232.3 MB in the end (delta: 84.4 MB). Free memory was 106.0 MB in the beginning and 95.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:20,634 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 124.2 MB in the beginning and 124.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 03:50:20,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.66 ms. Allocated memory is still 147.8 MB. Free memory was 105.5 MB in the beginning and 95.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:20,638 INFO L168 Benchmark]: Boogie Preprocessor took 125.68 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 95.5 MB in the beginning and 181.9 MB in the end (delta: -86.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:20,639 INFO L168 Benchmark]: RCFGBuilder took 532.83 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 156.1 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:20,641 INFO L168 Benchmark]: TraceAbstraction took 1891.12 ms. Allocated memory was 203.9 MB in the beginning and 232.3 MB in the end (delta: 28.3 MB). Free memory was 155.5 MB in the beginning and 95.1 MB in the end (delta: 60.4 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. [2019-11-07 03:50:20,652 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 124.2 MB in the beginning and 124.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.66 ms. Allocated memory is still 147.8 MB. Free memory was 105.5 MB in the beginning and 95.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.68 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 95.5 MB in the beginning and 181.9 MB in the end (delta: -86.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 532.83 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 156.1 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1891.12 ms. Allocated memory was 203.9 MB in the beginning and 232.3 MB in the end (delta: 28.3 MB). Free memory was 155.5 MB in the beginning and 95.1 MB in the end (delta: 60.4 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: 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: 16]: Loop Invariant Derived loop invariant: (((a == b || p2 == b) || a == p1) || p2 == a) || p1 == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 7 SDtfs, 6 SDslu, 16 SDs, 0 SdLazy, 35 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 180 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 94 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 2130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...