/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/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loops/heavy-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:21:07,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:21:07,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:21:07,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:21:07,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:21:07,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:21:07,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:21:07,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:21:07,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:21:07,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:21:07,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:21:07,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:21:07,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:21:07,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:21:07,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:21:07,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:21:07,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:21:07,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:21:07,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:21:07,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:21:07,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-01-31 23:21:07,831 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:21:07,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:21:07,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:21:07,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:21:07,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:21:07,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:21:07,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:21:07,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:21:07,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:21:07,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:21:07,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:21:07,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:21:07,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:21:07,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:21:07,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:21:07,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:21:07,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:21:07,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:21:07,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:21:07,836 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:21:07,836 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:21:08,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:21:08,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:21:08,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:21:08,102 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:21:08,103 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:21:08,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/heavy-2.c [2022-01-31 23:21:08,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e996d7b6d/c6cfa5c0225b47728c3293c01d0a12bd/FLAG2c5cfae32 [2022-01-31 23:21:08,533 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:21:08,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c [2022-01-31 23:21:08,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e996d7b6d/c6cfa5c0225b47728c3293c01d0a12bd/FLAG2c5cfae32 [2022-01-31 23:21:08,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e996d7b6d/c6cfa5c0225b47728c3293c01d0a12bd [2022-01-31 23:21:08,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:21:08,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:21:08,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:21:08,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:21:08,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:21:08,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:21:08" (1/1) ... [2022-01-31 23:21:08,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b581e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:08, skipping insertion in model container [2022-01-31 23:21:08,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:21:08" (1/1) ... [2022-01-31 23:21:08,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:21:08,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:21:08,711 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c[600,613] [2022-01-31 23:21:08,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:21:08,744 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:21:08,756 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c[600,613] [2022-01-31 23:21:08,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:21:08,789 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:21:08,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:08 WrapperNode [2022-01-31 23:21:08,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:21:08,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:21:08,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:21:08,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:21:08,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:08" (1/1) ... [2022-01-31 23:21:08,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:08" (1/1) ... [2022-01-31 23:21:08,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:08" (1/1) ... [2022-01-31 23:21:08,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:08" (1/1) ... [2022-01-31 23:21:08,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:08" (1/1) ... [2022-01-31 23:21:08,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:08" (1/1) ... [2022-01-31 23:21:08,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:08" (1/1) ... [2022-01-31 23:21:08,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:21:08,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:21:08,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:21:08,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:21:08,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:08" (1/1) ... [2022-01-31 23:21:08,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:21:08,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:21:08,848 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 23:21:08,853 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 23:21:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:21:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:21:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:21:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:21:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:21:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:21:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:21:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:21:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:21:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:21:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:21:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:21:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:21:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-01-31 23:21:08,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:21:08,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:21:08,934 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:21:08,935 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:21:09,024 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:21:09,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:21:09,029 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 23:21:09,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:21:09 BoogieIcfgContainer [2022-01-31 23:21:09,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:21:09,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:21:09,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:21:09,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:21:09,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:21:08" (1/3) ... [2022-01-31 23:21:09,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ca27e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:21:09, skipping insertion in model container [2022-01-31 23:21:09,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:21:08" (2/3) ... [2022-01-31 23:21:09,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ca27e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:21:09, skipping insertion in model container [2022-01-31 23:21:09,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:21:09" (3/3) ... [2022-01-31 23:21:09,037 INFO L111 eAbstractionObserver]: Analyzing ICFG heavy-2.c [2022-01-31 23:21:09,041 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:21:09,041 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:21:09,076 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:21:09,081 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=QVASR [2022-01-31 23:21:09,081 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:21:09,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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) [2022-01-31 23:21:09,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-31 23:21:09,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:21:09,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:21:09,099 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:21:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:21:09,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1947864061, now seen corresponding path program 1 times [2022-01-31 23:21:09,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:21:09,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264391885] [2022-01-31 23:21:09,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:21:09,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:21:09,172 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:21:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:21:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:21:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:21:09,295 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 23:21:09,296 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:21:09,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264391885] [2022-01-31 23:21:09,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [264391885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:21:09,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:21:09,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 23:21:09,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84504249] [2022-01-31 23:21:09,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:21:09,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 23:21:09,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:21:09,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 23:21:09,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:21:09,338 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-01-31 23:21:09,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:21:09,424 INFO L93 Difference]: Finished difference Result 42 states and 61 transitions. [2022-01-31 23:21:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 23:21:09,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 9 [2022-01-31 23:21:09,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:21:09,432 INFO L225 Difference]: With dead ends: 42 [2022-01-31 23:21:09,432 INFO L226 Difference]: Without dead ends: 23 [2022-01-31 23:21:09,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:21:09,437 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:21:09,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 21 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:21:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-31 23:21:09,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 15. [2022-01-31 23:21:09,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-01-31 23:21:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-01-31 23:21:09,460 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2022-01-31 23:21:09,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:21:09,461 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-01-31 23:21:09,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-01-31 23:21:09,461 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-01-31 23:21:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-31 23:21:09,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:21:09,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:21:09,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:21:09,462 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:21:09,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:21:09,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1947835231, now seen corresponding path program 1 times [2022-01-31 23:21:09,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:21:09,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639245865] [2022-01-31 23:21:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:21:09,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:21:09,467 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:21:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:21:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:21:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:21:09,529 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 23:21:09,529 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:21:09,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639245865] [2022-01-31 23:21:09,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [639245865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:21:09,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:21:09,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:21:09,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11771659] [2022-01-31 23:21:09,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:21:09,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:21:09,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:21:09,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:21:09,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:21:09,532 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-01-31 23:21:09,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:21:09,600 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2022-01-31 23:21:09,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:21:09,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 9 [2022-01-31 23:21:09,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:21:09,603 INFO L225 Difference]: With dead ends: 36 [2022-01-31 23:21:09,603 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 23:21:09,606 INFO L932 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 [2022-01-31 23:21:09,607 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:21:09,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 20 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 23:21:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 23:21:09,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 16. [2022-01-31 23:21:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-01-31 23:21:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-01-31 23:21:09,622 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2022-01-31 23:21:09,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:21:09,623 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-01-31 23:21:09,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-01-31 23:21:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-01-31 23:21:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-31 23:21:09,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:21:09,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:21:09,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:21:09,624 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:21:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:21:09,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1310776898, now seen corresponding path program 1 times [2022-01-31 23:21:09,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:21:09,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5521423] [2022-01-31 23:21:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:21:09,649 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.minus(SmtUtils.java:612) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.simplifyRealSubtraction(QvasrAbstractor.java:793) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.gaussPartialPivot(QvasrAbstractor.java:197) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.gaussianSolve(QvasrAbstractor.java:132) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.computeAbstraction(QvasrAbstractor.java:111) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrSummarizer.summarizeLoop(QvasrSummarizer.java:133) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrLoopSummarization.getQvasrAcceleration(QvasrLoopSummarization.java:79) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorQvasr.accelerateLoop(AcceleratorQvasr.java:87) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:210) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-31 23:21:09,652 INFO L158 Benchmark]: Toolchain (without parser) took 1097.47ms. Allocated memory is still 186.6MB. Free memory was 132.3MB in the beginning and 76.9MB in the end (delta: 55.3MB). Peak memory consumption was 54.8MB. Max. memory is 8.0GB. [2022-01-31 23:21:09,653 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 186.6MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:21:09,653 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.40ms. Allocated memory is still 186.6MB. Free memory was 132.2MB in the beginning and 123.6MB in the end (delta: 8.6MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2022-01-31 23:21:09,654 INFO L158 Benchmark]: Boogie Preprocessor took 24.08ms. Allocated memory is still 186.6MB. Free memory was 123.6MB in the beginning and 122.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 23:21:09,654 INFO L158 Benchmark]: RCFGBuilder took 214.83ms. Allocated memory is still 186.6MB. Free memory was 122.0MB in the beginning and 111.0MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 23:21:09,655 INFO L158 Benchmark]: TraceAbstraction took 620.06ms. Allocated memory is still 186.6MB. Free memory was 110.5MB in the beginning and 76.9MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-01-31 23:21:09,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 186.6MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.40ms. Allocated memory is still 186.6MB. Free memory was 132.2MB in the beginning and 123.6MB in the end (delta: 8.6MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.08ms. Allocated memory is still 186.6MB. Free memory was 123.6MB in the beginning and 122.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 214.83ms. Allocated memory is still 186.6MB. Free memory was 122.0MB in the beginning and 111.0MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 620.06ms. Allocated memory is still 186.6MB. Free memory was 110.5MB in the beginning and 76.9MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.minus(SmtUtils.java:612) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-31 23:21:09,689 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...