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/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:41:19,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:41:19,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:41:19,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:41:19,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:41:19,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:41:19,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:41:19,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:41:19,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:41:19,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:41:19,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:41:19,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:41:19,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:41:19,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:41:19,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:41:19,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:41:19,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:41:19,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:41:19,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:41:19,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:41:19,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:41:19,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:41:19,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:41:19,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:41:19,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 13:41:19,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:41:19,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:41:19,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:41:19,755 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 [2019-10-07 13:41:19,770 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:41:19,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:41:19,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:41:19,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:41:19,772 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:41:19,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:41:19,773 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:41:19,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:41:19,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:41:19,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:41:19,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:41:19,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:41:19,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:41:19,774 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:41:19,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:41:19,774 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:41:19,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:41:19,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:41:19,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:41:19,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:41:19,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:41:19,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:41:19,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:41:19,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:41:19,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:41:19,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:41:19,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:41:19,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:41:19,777 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 [2019-10-07 13:41:20,086 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:41:20,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:41:20,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:41:20,105 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:41:20,105 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:41:20,106 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2019-10-07 13:41:20,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f23f51430/14609462d35e4ca6b77fa41f66b0f503/FLAGd69a951d5 [2019-10-07 13:41:20,635 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:41:20,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2019-10-07 13:41:20,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f23f51430/14609462d35e4ca6b77fa41f66b0f503/FLAGd69a951d5 [2019-10-07 13:41:21,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f23f51430/14609462d35e4ca6b77fa41f66b0f503 [2019-10-07 13:41:21,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:41:21,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:41:21,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:41:21,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:41:21,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:41:21,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:41:21" (1/1) ... [2019-10-07 13:41:21,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4be3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:41:21, skipping insertion in model container [2019-10-07 13:41:21,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:41:21" (1/1) ... [2019-10-07 13:41:21,071 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:41:21,091 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:41:21,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:41:21,326 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:41:21,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:41:21,359 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:41:21,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:41:21 WrapperNode [2019-10-07 13:41:21,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:41:21,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:41:21,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:41:21,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:41:21,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:41:21" (1/1) ... [2019-10-07 13:41:21,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:41:21" (1/1) ... [2019-10-07 13:41:21,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:41:21" (1/1) ... [2019-10-07 13:41:21,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:41:21" (1/1) ... [2019-10-07 13:41:21,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:41:21" (1/1) ... [2019-10-07 13:41:21,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:41:21" (1/1) ... [2019-10-07 13:41:21,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:41:21" (1/1) ... [2019-10-07 13:41:21,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:41:21,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:41:21,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:41:21,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:41:21,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:41:21" (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 [2019-10-07 13:41:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:41:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:41:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:41:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:41:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:41:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 13:41:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:41:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:41:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:41:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:41:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:41:21,843 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:41:21,843 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:41:21,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:41:21 BoogieIcfgContainer [2019-10-07 13:41:21,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:41:21,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:41:21,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:41:21,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:41:21,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:41:21" (1/3) ... [2019-10-07 13:41:21,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a571d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:41:21, skipping insertion in model container [2019-10-07 13:41:21,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:41:21" (2/3) ... [2019-10-07 13:41:21,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a571d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:41:21, skipping insertion in model container [2019-10-07 13:41:21,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:41:21" (3/3) ... [2019-10-07 13:41:21,855 INFO L109 eAbstractionObserver]: Analyzing ICFG id_trans.i [2019-10-07 13:41:21,867 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:41:21,877 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:41:21,899 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:41:21,929 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:41:21,930 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:41:21,930 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:41:21,930 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:41:21,930 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:41:21,930 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:41:21,930 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:41:21,931 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:41:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-07 13:41:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 13:41:21,956 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:41:21,957 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:41:21,959 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:41:21,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:41:21,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1719634852, now seen corresponding path program 1 times [2019-10-07 13:41:21,977 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:41:21,977 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:41:21,977 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:41:21,978 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:41:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:41:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:41:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:41:22,189 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:41:22,189 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:41:22,189 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:41:22,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:41:22,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:41:22,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:41:22,207 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2019-10-07 13:41:22,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:41:22,364 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2019-10-07 13:41:22,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:41:22,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-07 13:41:22,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:41:22,375 INFO L225 Difference]: With dead ends: 44 [2019-10-07 13:41:22,376 INFO L226 Difference]: Without dead ends: 22 [2019-10-07 13:41:22,380 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:41:22,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-07 13:41:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-07 13:41:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-07 13:41:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-10-07 13:41:22,422 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 11 [2019-10-07 13:41:22,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:41:22,423 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-10-07 13:41:22,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:41:22,423 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-10-07 13:41:22,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-07 13:41:22,425 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:41:22,425 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:41:22,426 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:41:22,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:41:22,426 INFO L82 PathProgramCache]: Analyzing trace with hash 769813017, now seen corresponding path program 1 times [2019-10-07 13:41:22,427 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:41:22,427 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:41:22,427 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:41:22,427 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:41:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:41:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:41:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:41:22,505 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:41:22,507 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:41:22,507 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:41:22,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:41:22,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:41:22,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:41:22,511 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2019-10-07 13:41:22,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:41:22,580 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2019-10-07 13:41:22,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:41:22,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-07 13:41:22,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:41:22,582 INFO L225 Difference]: With dead ends: 28 [2019-10-07 13:41:22,583 INFO L226 Difference]: Without dead ends: 26 [2019-10-07 13:41:22,584 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:41:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-07 13:41:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-07 13:41:22,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-07 13:41:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-10-07 13:41:22,592 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2019-10-07 13:41:22,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:41:22,593 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-10-07 13:41:22,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:41:22,593 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-10-07 13:41:22,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-07 13:41:22,594 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:41:22,595 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:41:22,595 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:41:22,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:41:22,596 INFO L82 PathProgramCache]: Analyzing trace with hash 889343161, now seen corresponding path program 1 times [2019-10-07 13:41:22,596 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:41:22,596 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:41:22,596 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:41:22,597 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:41:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:41:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-07 13:41:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-07 13:41:22,725 INFO L161 tionRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-10-07 13:41:22,725 INFO L451 BasicCegarLoop]: Counterexample might be feasible [2019-10-07 13:41:22,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 01:41:22 BoogieIcfgContainer [2019-10-07 13:41:22,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 13:41:22,767 INFO L168 Benchmark]: Toolchain (without parser) took 1712.91 ms. Allocated memory was 141.6 MB in the beginning and 198.7 MB in the end (delta: 57.1 MB). Free memory was 99.3 MB in the beginning and 120.4 MB in the end (delta: -21.1 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2019-10-07 13:41:22,769 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:41:22,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.07 ms. Allocated memory is still 141.6 MB. Free memory was 99.0 MB in the beginning and 89.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:41:22,774 INFO L168 Benchmark]: Boogie Preprocessor took 135.83 ms. Allocated memory was 141.6 MB in the beginning and 198.7 MB in the end (delta: 57.1 MB). Free memory was 89.6 MB in the beginning and 176.5 MB in the end (delta: -86.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-07 13:41:22,776 INFO L168 Benchmark]: RCFGBuilder took 348.10 ms. Allocated memory is still 198.7 MB. Free memory was 176.5 MB in the beginning and 163.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-10-07 13:41:22,777 INFO L168 Benchmark]: TraceAbstraction took 917.70 ms. Allocated memory is still 198.7 MB. Free memory was 163.2 MB in the beginning and 120.4 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2019-10-07 13:41:22,790 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 306.07 ms. Allocated memory is still 141.6 MB. Free memory was 99.0 MB in the beginning and 89.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.83 ms. Allocated memory was 141.6 MB in the beginning and 198.7 MB in the end (delta: 57.1 MB). Free memory was 89.6 MB in the beginning and 176.5 MB in the end (delta: -86.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.10 ms. Allocated memory is still 198.7 MB. Free memory was 176.5 MB in the beginning and 163.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 917.70 ms. Allocated memory is still 198.7 MB. Free memory was 163.2 MB in the beginning and 120.4 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int idBitLength, material_length, nlen; [L12] int j, k; [L13] nlen = __VERIFIER_nondet_int() [L14] idBitLength = __VERIFIER_nondet_int() [L15] material_length = __VERIFIER_nondet_int() [L16] COND FALSE !(!( nlen == idBitLength / 32 )) [L17] j = 0 VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L17] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L18] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L18] RET __VERIFIER_assert( 0 <= j) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L19] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L19] RET __VERIFIER_assert( j < material_length ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L20] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L20] RET __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L21] CALL __VERIFIER_assert( j/4 < nlen) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 12 SDslu, 96 SDs, 0 SdLazy, 44 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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 incorrect! Received shutdown request...