/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:03:20,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:03:20,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:03:20,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 02:03:20,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:03:20,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:03:20,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:03:20,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:03:20,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:03:20,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:03:20,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:03:20,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:03:20,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:03:20,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:03:20,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:03:20,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:03:20,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 02:03:20,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:03:20,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:03:20,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:03:20,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:03:20,240 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:03:20,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:03:20,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:03:20,241 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:03:20,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:03:20,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:03:20,242 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:03:20,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:03:20,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:03:20,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:03:20,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:03:20,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:03:20,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:03:20,242 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:03:20,243 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:03:20,243 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:03:20,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:03:20,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:03:20,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:03:20,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:03:20,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:03:20,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:03:20,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:03:20,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:03:20,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:03:20,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:03:20,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:03:20,244 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:03:20,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:03:20,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:03:20,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:03:20,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:03:20,245 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:03:20,245 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:03:20,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:03:20,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:03:20,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:03:20,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:03:20,452 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:03:20,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2022-01-11 02:03:20,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5e5e248/71831f59c4014ea9bc4b66ac25140d36/FLAGe121f41d6 [2022-01-11 02:03:20,936 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:03:20,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2022-01-11 02:03:20,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5e5e248/71831f59c4014ea9bc4b66ac25140d36/FLAGe121f41d6 [2022-01-11 02:03:20,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5e5e248/71831f59c4014ea9bc4b66ac25140d36 [2022-01-11 02:03:20,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:03:20,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:03:20,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:03:20,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:03:20,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:03:20,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:03:20" (1/1) ... [2022-01-11 02:03:20,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c183c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:20, skipping insertion in model container [2022-01-11 02:03:20,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:03:20" (1/1) ... [2022-01-11 02:03:20,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:03:20,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:03:21,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i[893,906] [2022-01-11 02:03:21,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:03:21,192 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:03:21,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i[893,906] [2022-01-11 02:03:21,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:03:21,215 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:03:21,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:21 WrapperNode [2022-01-11 02:03:21,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:03:21,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:03:21,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:03:21,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:03:21,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:21" (1/1) ... [2022-01-11 02:03:21,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:21" (1/1) ... [2022-01-11 02:03:21,247 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 61 [2022-01-11 02:03:21,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:03:21,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:03:21,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:03:21,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:03:21,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:21" (1/1) ... [2022-01-11 02:03:21,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:21" (1/1) ... [2022-01-11 02:03:21,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:21" (1/1) ... [2022-01-11 02:03:21,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:21" (1/1) ... [2022-01-11 02:03:21,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:21" (1/1) ... [2022-01-11 02:03:21,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:21" (1/1) ... [2022-01-11 02:03:21,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:21" (1/1) ... [2022-01-11 02:03:21,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:03:21,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:03:21,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:03:21,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:03:21,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:21" (1/1) ... [2022-01-11 02:03:21,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:03:21,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:03:21,293 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) [2022-01-11 02:03:21,295 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 [2022-01-11 02:03:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:03:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:03:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:03:21,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:03:21,365 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:03:21,366 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:03:21,543 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:03:21,548 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:03:21,548 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 02:03:21,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:03:21 BoogieIcfgContainer [2022-01-11 02:03:21,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:03:21,550 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:03:21,550 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:03:21,551 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:03:21,553 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:03:21" (1/1) ... [2022-01-11 02:03:21,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:03:21 BasicIcfg [2022-01-11 02:03:21,623 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:03:21,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:03:21,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:03:21,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:03:21,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:03:20" (1/4) ... [2022-01-11 02:03:21,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb0310f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:03:21, skipping insertion in model container [2022-01-11 02:03:21,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:03:21" (2/4) ... [2022-01-11 02:03:21,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb0310f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:03:21, skipping insertion in model container [2022-01-11 02:03:21,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:03:21" (3/4) ... [2022-01-11 02:03:21,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb0310f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:03:21, skipping insertion in model container [2022-01-11 02:03:21,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:03:21" (4/4) ... [2022-01-11 02:03:21,629 INFO L111 eAbstractionObserver]: Analyzing ICFG id_trans.iTransformedIcfg [2022-01-11 02:03:21,633 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:03:21,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-11 02:03:21,665 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:03:21,670 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 02:03:21,670 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-11 02:03:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:03:21,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-11 02:03:21,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:03:21,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-11 02:03:21,685 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 02:03:21,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:03:21,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1365185208, now seen corresponding path program 1 times [2022-01-11 02:03:21,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:03:21,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592469262] [2022-01-11 02:03:21,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:03:21,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:03:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:03:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:03:21,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:03:21,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592469262] [2022-01-11 02:03:21,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592469262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:03:21,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:03:21,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:03:21,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772091439] [2022-01-11 02:03:21,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:03:21,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:03:21,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:03:21,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:03:21,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:03:21,949 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:03:23,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 02:03:24,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:03:24,125 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2022-01-11 02:03:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:03:24,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-01-11 02:03:24,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:03:24,133 INFO L225 Difference]: With dead ends: 70 [2022-01-11 02:03:24,133 INFO L226 Difference]: Without dead ends: 37 [2022-01-11 02:03:24,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:03:24,138 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:03:24,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 59 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 02:03:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-11 02:03:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 23. [2022-01-11 02:03:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:03:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-01-11 02:03:24,165 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 6 [2022-01-11 02:03:24,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:03:24,165 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-01-11 02:03:24,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:03:24,166 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-01-11 02:03:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-11 02:03:24,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:03:24,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:03:24,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:03:24,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 02:03:24,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:03:24,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1977925205, now seen corresponding path program 1 times [2022-01-11 02:03:24,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:03:24,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020510903] [2022-01-11 02:03:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:03:24,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:03:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:03:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:03:24,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:03:24,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020510903] [2022-01-11 02:03:24,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020510903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:03:24,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:03:24,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:03:24,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55623822] [2022-01-11 02:03:24,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:03:24,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:03:24,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:03:24,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:03:24,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:03:24,243 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:03:26,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 02:03:26,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:03:26,401 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-01-11 02:03:26,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:03:26,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-01-11 02:03:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:03:26,402 INFO L225 Difference]: With dead ends: 23 [2022-01-11 02:03:26,402 INFO L226 Difference]: Without dead ends: 21 [2022-01-11 02:03:26,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:03:26,404 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:03:26,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 02:03:26,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-11 02:03:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-11 02:03:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:03:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-01-11 02:03:26,411 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 8 [2022-01-11 02:03:26,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:03:26,411 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-01-11 02:03:26,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:03:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-01-11 02:03:26,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 02:03:26,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:03:26,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:03:26,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 02:03:26,415 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 02:03:26,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:03:26,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1884424686, now seen corresponding path program 1 times [2022-01-11 02:03:26,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:03:26,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634666700] [2022-01-11 02:03:26,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:03:26,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:03:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:03:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:03:26,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:03:26,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634666700] [2022-01-11 02:03:26,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634666700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:03:26,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:03:26,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:03:26,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194959386] [2022-01-11 02:03:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:03:26,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:03:26,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:03:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:03:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:03:26,601 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:03:28,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 02:03:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:03:28,759 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2022-01-11 02:03:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:03:28,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-11 02:03:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:03:28,760 INFO L225 Difference]: With dead ends: 33 [2022-01-11 02:03:28,760 INFO L226 Difference]: Without dead ends: 31 [2022-01-11 02:03:28,761 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 [2022-01-11 02:03:28,762 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:03:28,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 02:03:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-11 02:03:28,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-01-11 02:03:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:03:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-01-11 02:03:28,769 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 10 [2022-01-11 02:03:28,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:03:28,769 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-01-11 02:03:28,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:03:28,769 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-01-11 02:03:28,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 02:03:28,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:03:28,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:03:28,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 02:03:28,770 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 02:03:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:03:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1544040943, now seen corresponding path program 1 times [2022-01-11 02:03:28,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:03:28,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208501163] [2022-01-11 02:03:28,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:03:28,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:03:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-11 02:03:28,909 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-11 02:03:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-11 02:03:33,102 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-11 02:03:33,103 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-11 02:03:33,103 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-11 02:03:33,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-01-11 02:03:33,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-01-11 02:03:33,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-01-11 02:03:33,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 02:03:33,108 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-11 02:03:33,111 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-11 02:03:33,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:03:33 BasicIcfg [2022-01-11 02:03:33,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-11 02:03:33,137 INFO L158 Benchmark]: Toolchain (without parser) took 12177.52ms. Allocated memory was 185.6MB in the beginning and 286.3MB in the end (delta: 100.7MB). Free memory was 128.5MB in the beginning and 235.2MB in the end (delta: -106.7MB). Peak memory consumption was 115.3MB. Max. memory is 8.0GB. [2022-01-11 02:03:33,137 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-11 02:03:33,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.75ms. Allocated memory was 185.6MB in the beginning and 238.0MB in the end (delta: 52.4MB). Free memory was 128.2MB in the beginning and 209.8MB in the end (delta: -81.6MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. [2022-01-11 02:03:33,138 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.81ms. Allocated memory is still 238.0MB. Free memory was 209.8MB in the beginning and 208.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 02:03:33,138 INFO L158 Benchmark]: Boogie Preprocessor took 18.35ms. Allocated memory is still 238.0MB. Free memory was 208.3MB in the beginning and 207.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-11 02:03:33,138 INFO L158 Benchmark]: RCFGBuilder took 282.36ms. Allocated memory is still 238.0MB. Free memory was 207.2MB in the beginning and 195.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-11 02:03:33,139 INFO L158 Benchmark]: IcfgTransformer took 72.98ms. Allocated memory is still 238.0MB. Free memory was 195.7MB in the beginning and 192.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-01-11 02:03:33,139 INFO L158 Benchmark]: TraceAbstraction took 11511.66ms. Allocated memory was 238.0MB in the beginning and 286.3MB in the end (delta: 48.2MB). Free memory was 191.5MB in the beginning and 235.2MB in the end (delta: -43.7MB). Peak memory consumption was 126.7MB. Max. memory is 8.0GB. [2022-01-11 02:03:33,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 254.75ms. Allocated memory was 185.6MB in the beginning and 238.0MB in the end (delta: 52.4MB). Free memory was 128.2MB in the beginning and 209.8MB in the end (delta: -81.6MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.81ms. Allocated memory is still 238.0MB. Free memory was 209.8MB in the beginning and 208.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.35ms. Allocated memory is still 238.0MB. Free memory was 208.3MB in the beginning and 207.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 282.36ms. Allocated memory is still 238.0MB. Free memory was 207.2MB in the beginning and 195.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 72.98ms. Allocated memory is still 238.0MB. Free memory was 195.7MB in the beginning and 192.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 11511.66ms. Allocated memory was 238.0MB in the beginning and 286.3MB in the end (delta: 48.2MB). Free memory was 191.5MB in the beginning and 235.2MB in the end (delta: -43.7MB). Peak memory consumption was 126.7MB. 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: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int idBitLength, material_length, nlen; [L26] int j, k; [L27] nlen = __VERIFIER_nondet_int() [L28] idBitLength = __VERIFIER_nondet_int() [L29] material_length = __VERIFIER_nondet_int() [L30] COND FALSE !(!( nlen == idBitLength / 32 )) [L31] j = 0 VAL [idBitLength=-8, j=0, nlen=0] [L31] COND TRUE (j < idBitLength / 8) && (j < material_length) [L32] CALL __VERIFIER_assert( 0 <= j) [L18] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L32] RET __VERIFIER_assert( 0 <= j) [L33] CALL __VERIFIER_assert( j < material_length ) [L18] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L33] RET __VERIFIER_assert( j < material_length ) [L34] CALL __VERIFIER_assert( 0 <= j/4 ) [L18] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L34] RET __VERIFIER_assert( 0 <= j/4 ) [L35] CALL __VERIFIER_assert( j/4 < nlen) [L18] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 11.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 112 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55 IncrementalHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 54 mSDtfsCounter, 55 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 69 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-11 02:03:33,172 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...