/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum40.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 18:36:10,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 18:36:10,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 18:36:10,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 18:36:10,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 18:36:10,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 18:36:10,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 18:36:10,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 18:36:10,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 18:36:10,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 18:36:10,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 18:36:10,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 18:36:10,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 18:36:10,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 18:36:10,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 18:36:10,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 18:36:10,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 18:36:10,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 18:36:10,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 18:36:10,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 18:36:10,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 18:36:10,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 18:36:10,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 18:36:10,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 18:36:10,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 18:36:10,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 18:36:10,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 18:36:10,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 18:36:10,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 18:36:10,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 18:36:10,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 18:36:10,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 18:36:10,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 18:36:10,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 18:36:10,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 18:36:10,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 18:36:10,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 18:36:10,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 18:36:10,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 18:36:10,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 18:36:10,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 18:36:10,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 18:36:10,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 18:36:10,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 18:36:10,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 18:36:10,140 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 18:36:10,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 18:36:10,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 18:36:10,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 18:36:10,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 18:36:10,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 18:36:10,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 18:36:10,142 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 18:36:10,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 18:36:10,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 18:36:10,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 18:36:10,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 18:36:10,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 18:36:10,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 18:36:10,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 18:36:10,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:36:10,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 18:36:10,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 18:36:10,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 18:36:10,143 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 18:36:10,143 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 18:36:10,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 18:36:10,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 18:36:10,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 18:36:10,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 18:36:10,358 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 18:36:10,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum40.i [2022-01-31 18:36:10,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a2f34812/4f92722fca36485fa647a16bf483e9dd/FLAG90eb06d70 [2022-01-31 18:36:10,792 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 18:36:10,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum40.i [2022-01-31 18:36:10,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a2f34812/4f92722fca36485fa647a16bf483e9dd/FLAG90eb06d70 [2022-01-31 18:36:10,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a2f34812/4f92722fca36485fa647a16bf483e9dd [2022-01-31 18:36:10,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 18:36:10,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 18:36:10,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 18:36:10,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 18:36:10,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 18:36:10,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:36:10" (1/1) ... [2022-01-31 18:36:10,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d40dddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:36:10, skipping insertion in model container [2022-01-31 18:36:10,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 06:36:10" (1/1) ... [2022-01-31 18:36:10,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 18:36:10,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 18:36:10,995 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum40.i[1465,1478] [2022-01-31 18:36:11,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:36:11,008 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 18:36:11,035 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum40.i[1465,1478] [2022-01-31 18:36:11,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 18:36:11,045 INFO L208 MainTranslator]: Completed translation [2022-01-31 18:36:11,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:36:11 WrapperNode [2022-01-31 18:36:11,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 18:36:11,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 18:36:11,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 18:36:11,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 18:36:11,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:36:11" (1/1) ... [2022-01-31 18:36:11,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:36:11" (1/1) ... [2022-01-31 18:36:11,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:36:11" (1/1) ... [2022-01-31 18:36:11,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:36:11" (1/1) ... [2022-01-31 18:36:11,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:36:11" (1/1) ... [2022-01-31 18:36:11,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:36:11" (1/1) ... [2022-01-31 18:36:11,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:36:11" (1/1) ... [2022-01-31 18:36:11,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 18:36:11,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 18:36:11,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 18:36:11,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 18:36:11,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:36:11" (1/1) ... [2022-01-31 18:36:11,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 18:36:11,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 18:36:11,117 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 18:36:11,154 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 18:36:11,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 18:36:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 18:36:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 18:36:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2022-01-31 18:36:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2022-01-31 18:36:11,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 18:36:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 18:36:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 18:36:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 18:36:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 18:36:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 18:36:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 18:36:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 18:36:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2022-01-31 18:36:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 18:36:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2022-01-31 18:36:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 18:36:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 18:36:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 18:36:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 18:36:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 18:36:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 18:36:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 18:36:11,241 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 18:36:11,243 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 18:36:11,413 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 18:36:11,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 18:36:11,417 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 18:36:11,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:36:11 BoogieIcfgContainer [2022-01-31 18:36:11,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 18:36:11,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 18:36:11,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 18:36:11,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 18:36:11,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 06:36:10" (1/3) ... [2022-01-31 18:36:11,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2915f39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:36:11, skipping insertion in model container [2022-01-31 18:36:11,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 06:36:11" (2/3) ... [2022-01-31 18:36:11,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2915f39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 06:36:11, skipping insertion in model container [2022-01-31 18:36:11,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 06:36:11" (3/3) ... [2022-01-31 18:36:11,447 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum40.i [2022-01-31 18:36:11,451 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 18:36:11,452 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 18:36:11,482 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 18:36:11,487 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=JORDAN [2022-01-31 18:36:11,487 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 18:36:11,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-31 18:36:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 18:36:11,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 18:36:11,503 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 18:36:11,504 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 18:36:11,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 18:36:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash -310144342, now seen corresponding path program 1 times [2022-01-31 18:36:11,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 18:36:11,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348785433] [2022-01-31 18:36:11,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 18:36:11,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 18:36:11,566 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 18:36:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:11,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 18:36:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:11,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 18:36:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 18:36:11,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 18:36:11,717 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 18:36:11,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348785433] [2022-01-31 18:36:11,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1348785433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 18:36:11,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 18:36:11,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-31 18:36:11,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843719860] [2022-01-31 18:36:11,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 18:36:11,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 18:36:11,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 18:36:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 18:36:11,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:36:11,750 INFO L87 Difference]: Start difference. First operand has 37 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 2 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 18:36:11,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-31 18:36:11,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 18:36:11,767 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 18:36:11,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 18:36:11,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 18:36:11,769 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at least one of both input predicates is unknown: 40#true or 49#unknown at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.SdHoareTripleChecker$CheckHelper.check(SdHoareTripleChecker.java:150) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.SdHoareTripleChecker.checkCall(SdHoareTripleChecker.java:72) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkCall(ChainingHoareTripleChecker.java:470) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkCall(ChainingHoareTripleChecker.java:115) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:401) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:256) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1082) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:961) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) 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 18:36:11,776 INFO L158 Benchmark]: Toolchain (without parser) took 955.94ms. Allocated memory was 179.3MB in the beginning and 224.4MB in the end (delta: 45.1MB). Free memory was 130.3MB in the beginning and 167.1MB in the end (delta: -36.8MB). Peak memory consumption was 8.2MB. Max. memory is 8.0GB. [2022-01-31 18:36:11,776 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 179.3MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 18:36:11,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.71ms. Allocated memory was 179.3MB in the beginning and 224.4MB in the end (delta: 45.1MB). Free memory was 130.1MB in the beginning and 200.7MB in the end (delta: -70.6MB). Peak memory consumption was 4.7MB. Max. memory is 8.0GB. [2022-01-31 18:36:11,780 INFO L158 Benchmark]: Boogie Preprocessor took 40.84ms. Allocated memory is still 224.4MB. Free memory was 200.7MB in the beginning and 198.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 18:36:11,781 INFO L158 Benchmark]: RCFGBuilder took 331.07ms. Allocated memory is still 224.4MB. Free memory was 198.9MB in the beginning and 187.1MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 18:36:11,781 INFO L158 Benchmark]: TraceAbstraction took 354.53ms. Allocated memory is still 224.4MB. Free memory was 186.3MB in the beginning and 167.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-01-31 18:36:11,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 179.3MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 224.71ms. Allocated memory was 179.3MB in the beginning and 224.4MB in the end (delta: 45.1MB). Free memory was 130.1MB in the beginning and 200.7MB in the end (delta: -70.6MB). Peak memory consumption was 4.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.84ms. Allocated memory is still 224.4MB. Free memory was 200.7MB in the beginning and 198.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 331.07ms. Allocated memory is still 224.4MB. Free memory was 198.9MB in the beginning and 187.1MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 354.53ms. Allocated memory is still 224.4MB. Free memory was 186.3MB in the beginning and 167.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 40#true or 49#unknown de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 40#true or 49#unknown: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-31 18:36:11,817 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...