/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/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 20:40:30,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 20:40:30,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 20:40:31,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 20:40:31,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 20:40:31,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 20:40:31,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 20:40:31,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 20:40:31,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 20:40:31,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 20:40:31,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 20:40:31,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 20:40:31,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 20:40:31,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 20:40:31,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 20:40:31,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 20:40:31,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 20:40:31,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 20:40:31,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 20:40:31,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 20:40:31,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 20:40:31,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 20:40:31,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 20:40:31,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 20:40:31,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 20:40:31,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 20:40:31,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 20:40:31,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 20:40:31,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 20:40:31,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 20:40:31,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 20:40:31,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 20:40:31,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 20:40:31,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 20:40:31,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 20:40:31,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 20:40:31,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 20:40:31,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 20:40:31,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 20:40:31,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 20:40:31,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 20:40:31,085 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 20:40:31,093 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 20:40:31,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 20:40:31,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 20:40:31,094 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 20:40:31,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 20:40:31,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 20:40:31,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 20:40:31,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 20:40:31,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 20:40:31,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 20:40:31,096 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 20:40:31,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 20:40:31,096 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 20:40:31,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 20:40:31,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 20:40:31,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 20:40:31,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 20:40:31,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 20:40:31,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 20:40:31,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 20:40:31,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 20:40:31,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 20:40:31,097 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 20:40:31,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 20:40:31,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 20:40:31,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 20:40:31,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 20:40:31,348 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 20:40:31,348 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 20:40:31,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2022-01-31 20:40:31,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420b19104/4689f6c5f18a4e5abfe1ae10ad9fee34/FLAG904d866c9 [2022-01-31 20:40:31,752 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 20:40:31,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2022-01-31 20:40:31,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420b19104/4689f6c5f18a4e5abfe1ae10ad9fee34/FLAG904d866c9 [2022-01-31 20:40:32,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420b19104/4689f6c5f18a4e5abfe1ae10ad9fee34 [2022-01-31 20:40:32,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 20:40:32,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 20:40:32,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 20:40:32,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 20:40:32,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 20:40:32,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:40:32" (1/1) ... [2022-01-31 20:40:32,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282000ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:40:32, skipping insertion in model container [2022-01-31 20:40:32,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:40:32" (1/1) ... [2022-01-31 20:40:32,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 20:40:32,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 20:40:32,318 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/sum_array-1.c[363,376] [2022-01-31 20:40:32,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 20:40:32,343 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 20:40:32,351 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/sum_array-1.c[363,376] [2022-01-31 20:40:32,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 20:40:32,372 INFO L208 MainTranslator]: Completed translation [2022-01-31 20:40:32,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:40:32 WrapperNode [2022-01-31 20:40:32,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 20:40:32,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 20:40:32,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 20:40:32,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 20:40:32,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:40:32" (1/1) ... [2022-01-31 20:40:32,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:40:32" (1/1) ... [2022-01-31 20:40:32,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:40:32" (1/1) ... [2022-01-31 20:40:32,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:40:32" (1/1) ... [2022-01-31 20:40:32,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:40:32" (1/1) ... [2022-01-31 20:40:32,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:40:32" (1/1) ... [2022-01-31 20:40:32,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:40:32" (1/1) ... [2022-01-31 20:40:32,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 20:40:32,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 20:40:32,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 20:40:32,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 20:40:32,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:40:32" (1/1) ... [2022-01-31 20:40:32,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 20:40:32,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 20:40:32,448 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 20:40:32,466 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 20:40:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 20:40:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 20:40:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 20:40:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 20:40:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 20:40:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 20:40:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 20:40:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 20:40:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 20:40:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 20:40:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 20:40:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-01-31 20:40:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 20:40:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 20:40:32,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 20:40:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 20:40:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 20:40:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 20:40:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 20:40:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 20:40:32,545 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 20:40:32,547 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 20:40:32,651 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 20:40:32,655 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 20:40:32,655 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-31 20:40:32,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:40:32 BoogieIcfgContainer [2022-01-31 20:40:32,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 20:40:32,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 20:40:32,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 20:40:32,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 20:40:32,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:40:32" (1/3) ... [2022-01-31 20:40:32,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c18f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:40:32, skipping insertion in model container [2022-01-31 20:40:32,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:40:32" (2/3) ... [2022-01-31 20:40:32,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c18f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:40:32, skipping insertion in model container [2022-01-31 20:40:32,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:40:32" (3/3) ... [2022-01-31 20:40:32,678 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2022-01-31 20:40:32,681 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 20:40:32,681 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 20:40:32,716 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 20:40:32,732 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 20:40:32,732 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 20:40:32,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 20:40:32,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-31 20:40:32,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:40:32,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:40:32,754 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:40:32,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:40:32,758 INFO L85 PathProgramCache]: Analyzing trace with hash 955945954, now seen corresponding path program 1 times [2022-01-31 20:40:32,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:40:32,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789967124] [2022-01-31 20:40:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:40:32,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:40:32,803 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:40:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:40:33,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:40:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:40:33,061 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 20:40:33,062 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:40:33,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789967124] [2022-01-31 20:40:33,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1789967124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:40:33,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:40:33,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 20:40:33,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299546049] [2022-01-31 20:40:33,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:40:33,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 20:40:33,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:40:33,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 20:40:33,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 20:40:33,092 INFO L87 Difference]: Start difference. First operand has 30 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 20:40:33,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:40:33,266 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2022-01-31 20:40:33,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 20:40:33,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-01-31 20:40:33,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:40:33,274 INFO L225 Difference]: With dead ends: 71 [2022-01-31 20:40:33,274 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 20:40:33,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-31 20:40:33,279 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 61 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 20:40:33,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 35 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 20:40:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 20:40:33,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-01-31 20:40:33,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 20:40:33,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-01-31 20:40:33,311 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2022-01-31 20:40:33,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:40:33,311 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-01-31 20:40:33,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 20:40:33,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-01-31 20:40:33,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 20:40:33,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:40:33,312 INFO L514 BasicCegarLoop]: trace histogram [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 20:40:33,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 20:40:33,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:40:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:40:33,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1073067556, now seen corresponding path program 1 times [2022-01-31 20:40:33,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:40:33,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905795395] [2022-01-31 20:40:33,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:40:33,323 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:40:33,323 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 20:40:33,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:40:33,325 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:40:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 20:40:33,365 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 20:40:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 20:40:33,454 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 20:40:33,455 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 20:40:33,458 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 20:40:33,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 20:40:33,462 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 20:40:33,464 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 20:40:33,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:40:33 BoogieIcfgContainer [2022-01-31 20:40:33,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 20:40:33,482 INFO L158 Benchmark]: Toolchain (without parser) took 1337.97ms. Allocated memory was 176.2MB in the beginning and 213.9MB in the end (delta: 37.7MB). Free memory was 124.3MB in the beginning and 186.3MB in the end (delta: -62.0MB). Peak memory consumption was 39.7MB. Max. memory is 8.0GB. [2022-01-31 20:40:33,483 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory was 140.8MB in the beginning and 140.7MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 20:40:33,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.39ms. Allocated memory is still 176.2MB. Free memory was 124.0MB in the beginning and 150.2MB in the end (delta: -26.2MB). Peak memory consumption was 8.3MB. Max. memory is 8.0GB. [2022-01-31 20:40:33,483 INFO L158 Benchmark]: Boogie Preprocessor took 41.87ms. Allocated memory is still 176.2MB. Free memory was 150.2MB in the beginning and 148.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 20:40:33,484 INFO L158 Benchmark]: RCFGBuilder took 241.01ms. Allocated memory is still 176.2MB. Free memory was 148.6MB in the beginning and 136.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 20:40:33,484 INFO L158 Benchmark]: TraceAbstraction took 824.28ms. Allocated memory was 176.2MB in the beginning and 213.9MB in the end (delta: 37.7MB). Free memory was 136.1MB in the beginning and 186.3MB in the end (delta: -50.2MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. [2022-01-31 20:40:33,487 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory was 140.8MB in the beginning and 140.7MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 218.39ms. Allocated memory is still 176.2MB. Free memory was 124.0MB in the beginning and 150.2MB in the end (delta: -26.2MB). Peak memory consumption was 8.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.87ms. Allocated memory is still 176.2MB. Free memory was 150.2MB in the beginning and 148.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 241.01ms. Allocated memory is still 176.2MB. Free memory was 148.6MB in the beginning and 136.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 824.28ms. Allocated memory was 176.2MB in the beginning and 213.9MB in the end (delta: 37.7MB). Free memory was 136.1MB in the beginning and 186.3MB in the end (delta: -50.2MB). Peak memory consumption was 51.4MB. 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 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 [L20] COND TRUE i