/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/css2003.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 02:33:19,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 02:33:19,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 02:33:19,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 02:33:20,028 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 [2022-01-31 02:33:20,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 02:33:20,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 02:33:20,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 02:33:20,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 02:33:20,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 02:33:20,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 02:33:20,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 02:33:20,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 02:33:20,044 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 02:33:20,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 02:33:20,044 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 02:33:20,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 02:33:20,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 02:33:20,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 02:33:20,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 02:33:20,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 02:33:20,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 02:33:20,045 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 02:33:20,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 02:33:20,045 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 02:33:20,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 02:33:20,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 02:33:20,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 02:33:20,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 02:33:20,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 02:33:20,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 02:33:20,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 02:33:20,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 02:33:20,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 02:33:20,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 02:33:20,046 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 02:33:20,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 02:33:20,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 02:33:20,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 02:33:20,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 02:33:20,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 02:33:20,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 02:33:20,239 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 02:33:20,239 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 02:33:20,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/css2003.i [2022-01-31 02:33:20,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd6536ce/6e1a8a148a1d44e6a0aaceed27ac123a/FLAGa3bda5ac6 [2022-01-31 02:33:20,654 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 02:33:20,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i [2022-01-31 02:33:20,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd6536ce/6e1a8a148a1d44e6a0aaceed27ac123a/FLAGa3bda5ac6 [2022-01-31 02:33:21,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd6536ce/6e1a8a148a1d44e6a0aaceed27ac123a [2022-01-31 02:33:21,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 02:33:21,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 02:33:21,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 02:33:21,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 02:33:21,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 02:33:21,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:33:21" (1/1) ... [2022-01-31 02:33:21,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784caaf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:33:21, skipping insertion in model container [2022-01-31 02:33:21,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:33:21" (1/1) ... [2022-01-31 02:33:21,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 02:33:21,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 02:33:21,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i[895,908] [2022-01-31 02:33:21,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 02:33:21,342 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 02:33:21,366 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i[895,908] [2022-01-31 02:33:21,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 02:33:21,384 INFO L208 MainTranslator]: Completed translation [2022-01-31 02:33:21,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:33:21 WrapperNode [2022-01-31 02:33:21,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 02:33:21,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 02:33:21,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 02:33:21,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 02:33:21,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:33:21" (1/1) ... [2022-01-31 02:33:21,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:33:21" (1/1) ... [2022-01-31 02:33:21,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:33:21" (1/1) ... [2022-01-31 02:33:21,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:33:21" (1/1) ... [2022-01-31 02:33:21,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:33:21" (1/1) ... [2022-01-31 02:33:21,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:33:21" (1/1) ... [2022-01-31 02:33:21,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:33:21" (1/1) ... [2022-01-31 02:33:21,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 02:33:21,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 02:33:21,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 02:33:21,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 02:33:21,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:33:21" (1/1) ... [2022-01-31 02:33:21,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 02:33:21,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:33:21,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 02:33:21,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 02:33:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 02:33:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 02:33:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 02:33:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 02:33:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 02:33:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 02:33:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 02:33:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 02:33:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 02:33:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 02:33:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 02:33:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 02:33:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 02:33:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 02:33:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 02:33:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 02:33:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 02:33:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 02:33:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 02:33:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 02:33:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 02:33:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 02:33:21,535 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 02:33:21,536 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 02:33:21,632 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 02:33:21,636 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 02:33:21,636 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 02:33:21,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:33:21 BoogieIcfgContainer [2022-01-31 02:33:21,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 02:33:21,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 02:33:21,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 02:33:21,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 02:33:21,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 02:33:21" (1/3) ... [2022-01-31 02:33:21,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26456e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:33:21, skipping insertion in model container [2022-01-31 02:33:21,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:33:21" (2/3) ... [2022-01-31 02:33:21,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26456e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:33:21, skipping insertion in model container [2022-01-31 02:33:21,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:33:21" (3/3) ... [2022-01-31 02:33:21,644 INFO L111 eAbstractionObserver]: Analyzing ICFG css2003.i [2022-01-31 02:33:21,647 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 02:33:21,647 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 02:33:21,695 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 02:33:21,704 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 02:33:21,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 02:33:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 02:33:21,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-31 02:33:21,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:33:21,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:33:21,740 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:33:21,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:33:21,745 INFO L85 PathProgramCache]: Analyzing trace with hash 255759161, now seen corresponding path program 1 times [2022-01-31 02:33:21,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:33:21,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149719327] [2022-01-31 02:33:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:33:21,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:33:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:22,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:33:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:33:22,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:33:22,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149719327] [2022-01-31 02:33:22,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149719327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 02:33:22,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 02:33:22,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 02:33:22,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403151079] [2022-01-31 02:33:22,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 02:33:22,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 02:33:22,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:33:22,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 02:33:22,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-31 02:33:22,144 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 02:33:22,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:33:22,307 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2022-01-31 02:33:22,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 02:33:22,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-01-31 02:33:22,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:33:22,313 INFO L225 Difference]: With dead ends: 34 [2022-01-31 02:33:22,314 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 02:33:22,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-01-31 02:33:22,318 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:33:22,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 49 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:33:22,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 02:33:22,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 02:33:22,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-31 02:33:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 02:33:22,339 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-01-31 02:33:22,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:33:22,339 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 02:33:22,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 02:33:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 02:33:22,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 02:33:22,341 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 02:33:22,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 02:33:22,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-31 02:33:22,374 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-01-31 02:33:22,375 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-01-31 02:33:22,375 INFO L858 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-01-31 02:33:22,375 INFO L858 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-01-31 02:33:22,375 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2022-01-31 02:33:22,375 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2022-01-31 02:33:22,375 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2022-01-31 02:33:22,376 INFO L854 garLoopResultBuilder]: At program point L34-1(lines 30 35) the Hoare annotation is: (or (and (<= 0 main_~k~0) (<= main_~k~0 1) (= (+ (- 1) main_~i~0) 0)) (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0)))) [2022-01-31 02:33:22,376 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2022-01-31 02:33:22,376 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-01-31 02:33:22,376 INFO L858 garLoopResultBuilder]: For program point L30-2(lines 30 35) no Hoare annotation was computed. [2022-01-31 02:33:22,377 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 24 37) no Hoare annotation was computed. [2022-01-31 02:33:22,377 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 24 37) no Hoare annotation was computed. [2022-01-31 02:33:22,377 INFO L854 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2022-01-31 02:33:22,377 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-01-31 02:33:22,377 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-01-31 02:33:22,377 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-01-31 02:33:22,378 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-31 02:33:22,378 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-01-31 02:33:22,378 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-01-31 02:33:22,378 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-31 02:33:22,378 INFO L858 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-01-31 02:33:22,378 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-01-31 02:33:22,378 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-01-31 02:33:22,379 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-01-31 02:33:22,379 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-01-31 02:33:22,379 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-01-31 02:33:22,382 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-31 02:33:22,383 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 02:33:22,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:33:22 BoogieIcfgContainer [2022-01-31 02:33:22,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 02:33:22,405 INFO L158 Benchmark]: Toolchain (without parser) took 1324.94ms. Allocated memory is still 188.7MB. Free memory was 136.5MB in the beginning and 118.7MB in the end (delta: 17.8MB). Peak memory consumption was 17.4MB. Max. memory is 8.0GB. [2022-01-31 02:33:22,405 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 154.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 02:33:22,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.87ms. Allocated memory is still 188.7MB. Free memory was 136.5MB in the beginning and 163.6MB in the end (delta: -27.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 02:33:22,411 INFO L158 Benchmark]: Boogie Preprocessor took 30.26ms. Allocated memory is still 188.7MB. Free memory was 163.6MB in the beginning and 162.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 02:33:22,411 INFO L158 Benchmark]: RCFGBuilder took 220.48ms. Allocated memory is still 188.7MB. Free memory was 162.2MB in the beginning and 152.6MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-31 02:33:22,411 INFO L158 Benchmark]: TraceAbstraction took 766.23ms. Allocated memory is still 188.7MB. Free memory was 152.1MB in the beginning and 118.7MB in the end (delta: 33.4MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-01-31 02:33:22,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 154.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 304.87ms. Allocated memory is still 188.7MB. Free memory was 136.5MB in the beginning and 163.6MB in the end (delta: -27.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.26ms. Allocated memory is still 188.7MB. Free memory was 163.6MB in the beginning and 162.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 220.48ms. Allocated memory is still 188.7MB. Free memory was 162.2MB in the beginning and 152.6MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 766.23ms. Allocated memory is still 188.7MB. Free memory was 152.1MB in the beginning and 118.7MB in the end (delta: 33.4MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 16 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 8 PreInvPairs, 11 NumberOfFragments, 52 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((0 <= k && k <= 1) && -1 + i == 0) || ((2 <= i && i + k <= 2) && 1 <= i + k) RESULT: Ultimate proved your program to be correct! [2022-01-31 02:33:22,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...