/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/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-04 19:27:21,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-04 19:27:21,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-04 19:27:21,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-04 19:27:21,424 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 [2022-04-04 19:27:21,437 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-04 19:27:21,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-04 19:27:21,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-04 19:27:21,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-04 19:27:21,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-04 19:27:21,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-04 19:27:21,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-04 19:27:21,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-04 19:27:21,439 INFO L138 SettingsManager]: * Use SBE=true [2022-04-04 19:27:21,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-04 19:27:21,439 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-04 19:27:21,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-04 19:27:21,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-04 19:27:21,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-04 19:27:21,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-04 19:27:21,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-04 19:27:21,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-04 19:27:21,439 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-04 19:27:21,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-04 19:27:21,440 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-04 19:27:21,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-04 19:27:21,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-04 19:27:21,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-04 19:27:21,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-04 19:27:21,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-04 19:27:21,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-04 19:27:21,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-04 19:27:21,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-04 19:27:21,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-04 19:27:21,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-04 19:27:21,441 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-04 19:27:21,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-04 19:27:21,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-04 19:27:21,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-04 19:27:21,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-04 19:27:21,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-04 19:27:21,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-04 19:27:21,641 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-04 19:27:21,650 INFO L275 PluginConnector]: CDTParser initialized [2022-04-04 19:27:21,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2022-04-04 19:27:21,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51b405db2/7d04e1a1d59248a9a6a08b204900daec/FLAGc8c8ac7a9 [2022-04-04 19:27:22,065 INFO L306 CDTParser]: Found 1 translation units. [2022-04-04 19:27:22,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2022-04-04 19:27:22,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51b405db2/7d04e1a1d59248a9a6a08b204900daec/FLAGc8c8ac7a9 [2022-04-04 19:27:22,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51b405db2/7d04e1a1d59248a9a6a08b204900daec [2022-04-04 19:27:22,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-04 19:27:22,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-04 19:27:22,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-04 19:27:22,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-04 19:27:22,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-04 19:27:22,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.04 07:27:22" (1/1) ... [2022-04-04 19:27:22,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b66bfdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 07:27:22, skipping insertion in model container [2022-04-04 19:27:22,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.04 07:27:22" (1/1) ... [2022-04-04 19:27:22,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-04 19:27:22,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-04 19:27:22,233 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/gsv2008.c.i.v+cfa-reducer.c[986,999] [2022-04-04 19:27:22,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-04 19:27:22,240 INFO L203 MainTranslator]: Completed pre-run [2022-04-04 19:27:22,250 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/gsv2008.c.i.v+cfa-reducer.c[986,999] [2022-04-04 19:27:22,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-04 19:27:22,259 INFO L208 MainTranslator]: Completed translation [2022-04-04 19:27:22,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 07:27:22 WrapperNode [2022-04-04 19:27:22,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-04 19:27:22,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-04 19:27:22,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-04 19:27:22,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-04 19:27:22,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 07:27:22" (1/1) ... [2022-04-04 19:27:22,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 07:27:22" (1/1) ... [2022-04-04 19:27:22,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 07:27:22" (1/1) ... [2022-04-04 19:27:22,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 07:27:22" (1/1) ... [2022-04-04 19:27:22,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 07:27:22" (1/1) ... [2022-04-04 19:27:22,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 07:27:22" (1/1) ... [2022-04-04 19:27:22,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 07:27:22" (1/1) ... [2022-04-04 19:27:22,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-04 19:27:22,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-04 19:27:22,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-04 19:27:22,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-04 19:27:22,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 07:27:22" (1/1) ... [2022-04-04 19:27:22,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-04 19:27:22,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-04 19:27:22,300 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) [2022-04-04 19:27:22,347 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 [2022-04-04 19:27:22,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-04 19:27:22,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-04 19:27:22,361 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-04 19:27:22,362 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-04 19:27:22,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-04 19:27:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-04 19:27:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-04 19:27:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-04 19:27:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-04 19:27:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-04 19:27:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-04 19:27:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-04 19:27:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-04 19:27:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-04 19:27:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-04 19:27:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-04 19:27:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-04 19:27:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-04 19:27:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-04 19:27:22,412 INFO L234 CfgBuilder]: Building ICFG [2022-04-04 19:27:22,413 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-04 19:27:22,506 INFO L275 CfgBuilder]: Performing block encoding [2022-04-04 19:27:22,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-04 19:27:22,510 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-04-04 19:27:22,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.04 07:27:22 BoogieIcfgContainer [2022-04-04 19:27:22,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-04 19:27:22,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-04 19:27:22,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-04 19:27:22,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-04 19:27:22,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.04 07:27:22" (1/3) ... [2022-04-04 19:27:22,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca32dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.04 07:27:22, skipping insertion in model container [2022-04-04 19:27:22,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 07:27:22" (2/3) ... [2022-04-04 19:27:22,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca32dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.04 07:27:22, skipping insertion in model container [2022-04-04 19:27:22,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.04 07:27:22" (3/3) ... [2022-04-04 19:27:22,541 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2022-04-04 19:27:22,545 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-04 19:27:22,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-04 19:27:22,574 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-04 19:27:22,579 INFO L340 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 [2022-04-04 19:27:22,579 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-04 19:27:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 19:27:22,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-04 19:27:22,593 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 19:27:22,593 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-04 19:27:22,593 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 19:27:22,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 19:27:22,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1088558671, now seen corresponding path program 1 times [2022-04-04 19:27:22,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 19:27:22,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484916075] [2022-04-04 19:27:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 19:27:22,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 19:27:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 19:27:22,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 19:27:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 19:27:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 19:27:22,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 19:27:22,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484916075] [2022-04-04 19:27:22,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484916075] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-04 19:27:22,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-04 19:27:22,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-04 19:27:22,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654009243] [2022-04-04 19:27:22,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-04 19:27:22,744 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-04 19:27:22,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 19:27:22,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-04 19:27:22,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-04 19:27:22,762 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 19:27:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 19:27:22,812 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-04-04 19:27:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-04 19:27:22,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-04 19:27:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 19:27:22,818 INFO L225 Difference]: With dead ends: 26 [2022-04-04 19:27:22,819 INFO L226 Difference]: Without dead ends: 13 [2022-04-04 19:27:22,821 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-04 19:27:22,823 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-04 19:27:22,824 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-04 19:27:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-04 19:27:22,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-04 19:27:22,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 19:27:22,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-04-04 19:27:22,846 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-04-04 19:27:22,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 19:27:22,847 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-04-04 19:27:22,847 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 19:27:22,847 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-04 19:27:22,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-04 19:27:22,847 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 19:27:22,847 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-04 19:27:22,848 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-04 19:27:22,848 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 19:27:22,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 19:27:22,848 INFO L85 PathProgramCache]: Analyzing trace with hash 614357099, now seen corresponding path program 1 times [2022-04-04 19:27:22,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 19:27:22,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236646970] [2022-04-04 19:27:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 19:27:22,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 19:27:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 19:27:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 19:27:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 19:27:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 19:27:22,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 19:27:22,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236646970] [2022-04-04 19:27:22,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236646970] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-04 19:27:22,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869692784] [2022-04-04 19:27:22,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 19:27:22,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 19:27:22,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-04 19:27:22,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-04 19:27:22,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-04 19:27:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 19:27:23,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-04 19:27:23,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-04 19:27:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 19:27:23,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-04 19:27:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 19:27:23,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869692784] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-04 19:27:23,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-04 19:27:23,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-04-04 19:27:23,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918373459] [2022-04-04 19:27:23,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-04 19:27:23,195 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-04 19:27:23,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 19:27:23,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-04 19:27:23,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-04 19:27:23,196 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 19:27:23,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 19:27:23,267 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-04-04 19:27:23,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-04 19:27:23,267 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (3), 2 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 [2022-04-04 19:27:23,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 19:27:23,268 INFO L225 Difference]: With dead ends: 15 [2022-04-04 19:27:23,268 INFO L226 Difference]: Without dead ends: 0 [2022-04-04 19:27:23,268 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-04-04 19:27:23,269 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-04 19:27:23,270 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 30 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-04 19:27:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-04 19:27:23,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-04 19:27:23,271 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) [2022-04-04 19:27:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-04 19:27:23,271 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-04-04 19:27:23,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 19:27:23,271 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-04 19:27:23,271 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-04 19:27:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-04 19:27:23,272 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-04 19:27:23,273 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-04 19:27:23,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-04 19:27:23,487 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 19:27:23,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-04 19:27:23,516 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-04-04 19:27:23,516 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-04-04 19:27:23,516 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-04-04 19:27:23,517 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2022-04-04 19:27:23,517 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-04-04 19:27:23,517 INFO L882 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-04-04 19:27:23,517 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-04-04 19:27:23,517 INFO L882 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2022-04-04 19:27:23,517 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 13 60) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0) [2022-04-04 19:27:23,517 INFO L882 garLoopResultBuilder]: For program point L25(lines 25 58) no Hoare annotation was computed. [2022-04-04 19:27:23,517 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 13 60) no Hoare annotation was computed. [2022-04-04 19:27:23,518 INFO L882 garLoopResultBuilder]: For program point L19(lines 19 59) no Hoare annotation was computed. [2022-04-04 19:27:23,518 INFO L882 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2022-04-04 19:27:23,518 INFO L882 garLoopResultBuilder]: For program point L46(lines 46 55) no Hoare annotation was computed. [2022-04-04 19:27:23,518 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 13 60) no Hoare annotation was computed. [2022-04-04 19:27:23,518 INFO L878 garLoopResultBuilder]: At program point L37(lines 30 58) the Hoare annotation is: (and (or (< main_~main__x~0 0) (< 0 main_~main__y~0)) (= |old(~__return_65~0)| ~__return_65~0)) [2022-04-04 19:27:23,518 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-04 19:27:23,518 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_65~0)| ~__return_65~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-04 19:27:23,518 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-04 19:27:23,518 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-04 19:27:23,519 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-04 19:27:23,519 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-04 19:27:23,519 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-04 19:27:23,521 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-04 19:27:23,522 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-04 19:27:23,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.04 07:27:23 BoogieIcfgContainer [2022-04-04 19:27:23,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-04 19:27:23,533 INFO L158 Benchmark]: Toolchain (without parser) took 1450.90ms. Allocated memory was 191.9MB in the beginning and 336.6MB in the end (delta: 144.7MB). Free memory was 135.3MB in the beginning and 246.1MB in the end (delta: -110.8MB). Peak memory consumption was 34.5MB. Max. memory is 8.0GB. [2022-04-04 19:27:23,538 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 191.9MB. Free memory is still 151.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-04 19:27:23,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.31ms. Allocated memory was 191.9MB in the beginning and 336.6MB in the end (delta: 144.7MB). Free memory was 135.2MB in the beginning and 310.1MB in the end (delta: -174.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-04 19:27:23,543 INFO L158 Benchmark]: Boogie Preprocessor took 17.48ms. Allocated memory is still 336.6MB. Free memory was 310.1MB in the beginning and 309.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-04 19:27:23,543 INFO L158 Benchmark]: RCFGBuilder took 233.54ms. Allocated memory is still 336.6MB. Free memory was 309.0MB in the beginning and 299.0MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-04 19:27:23,543 INFO L158 Benchmark]: TraceAbstraction took 1007.93ms. Allocated memory is still 336.6MB. Free memory was 298.5MB in the beginning and 246.1MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. [2022-04-04 19:27:23,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 191.9MB. Free memory is still 151.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 177.31ms. Allocated memory was 191.9MB in the beginning and 336.6MB in the end (delta: 144.7MB). Free memory was 135.2MB in the beginning and 310.1MB in the end (delta: -174.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.48ms. Allocated memory is still 336.6MB. Free memory was 310.1MB in the beginning and 309.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 233.54ms. Allocated memory is still 336.6MB. Free memory was 309.0MB in the beginning and 299.0MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1007.93ms. Allocated memory is still 336.6MB. Free memory was 298.5MB in the beginning and 246.1MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. 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: 48]: 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 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, 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, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 23 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 29 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 130 SizeOfPredicates, 4 NumberOfNonLiveVariables, 76 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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: (main__x < 0 || 0 < main__y) && \old(__return_65) == __return_65 RESULT: Ultimate proved your program to be correct! [2022-04-04 19:27:23,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...