/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/termination-memory-linkedlists/ll_append_rec-alloca-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:14:40,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:14:40,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:14:41,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:14:41,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:14:41,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:14:41,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:14:41,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:14:41,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:14:41,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:14:41,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:14:41,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:14:41,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:14:41,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:14:41,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:14:41,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:14:41,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:14:41,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:14:41,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:14:41,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:14:41,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:14:41,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:14:41,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:14:41,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:14:41,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 17:14:41,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 17:14:41,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 17:14:41,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 17:14:41,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 17:14:41,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 17:14:41,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 17:14:41,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 17:14:41,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 17:14:41,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 17:14:41,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 17:14:41,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 17:14:41,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 17:14:41,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 17:14:41,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:14:41,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:14:41,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:14:41,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 17:14:41,133 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:14:41,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:14:41,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:14:41,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:14:41,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:14:41,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:14:41,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:14:41,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:14:41,137 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:14:41,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:14:41,138 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:14:41,138 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:14:41,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:14:41,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:14:41,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:14:41,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:14:41,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:14:41,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:14:41,140 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:14:41,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:14:41,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:14:41,141 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:14:41,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:14:41,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:14:41,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:14:41,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:14:41,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:14:41,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:14:41,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:14:41,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:14:41,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:14:41,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:14:41,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:14:41,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:14:41,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:14:41,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:14:41,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:14:41,536 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:14:41,537 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:14:41,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-linkedlists/ll_append_rec-alloca-1.i [2022-10-16 17:14:41,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eccfd834/550ca4d9edc14799b70d37772883566a/FLAG47c350d19 [2022-10-16 17:14:42,274 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:14:42,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-linkedlists/ll_append_rec-alloca-1.i [2022-10-16 17:14:42,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eccfd834/550ca4d9edc14799b70d37772883566a/FLAG47c350d19 [2022-10-16 17:14:42,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eccfd834/550ca4d9edc14799b70d37772883566a [2022-10-16 17:14:42,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:14:42,589 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:14:42,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:14:42,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:14:42,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:14:42,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:14:42" (1/1) ... [2022-10-16 17:14:42,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aba6a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:42, skipping insertion in model container [2022-10-16 17:14:42,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:14:42" (1/1) ... [2022-10-16 17:14:42,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:14:42,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:14:42,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:14:42,998 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:14:43,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:14:43,112 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:14:43,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43 WrapperNode [2022-10-16 17:14:43,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:14:43,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:14:43,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:14:43,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:14:43,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43" (1/1) ... [2022-10-16 17:14:43,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43" (1/1) ... [2022-10-16 17:14:43,165 INFO L138 Inliner]: procedures = 115, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2022-10-16 17:14:43,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:14:43,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:14:43,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:14:43,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:14:43,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43" (1/1) ... [2022-10-16 17:14:43,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43" (1/1) ... [2022-10-16 17:14:43,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43" (1/1) ... [2022-10-16 17:14:43,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43" (1/1) ... [2022-10-16 17:14:43,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43" (1/1) ... [2022-10-16 17:14:43,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43" (1/1) ... [2022-10-16 17:14:43,192 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43" (1/1) ... [2022-10-16 17:14:43,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43" (1/1) ... [2022-10-16 17:14:43,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:14:43,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:14:43,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:14:43,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:14:43,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43" (1/1) ... [2022-10-16 17:14:43,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:14:43,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:43,235 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) [2022-10-16 17:14:43,241 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 [2022-10-16 17:14:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure new_ll [2022-10-16 17:14:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure new_ll [2022-10-16 17:14:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 17:14:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 17:14:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 17:14:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 17:14:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure length [2022-10-16 17:14:43,338 INFO L138 BoogieDeclarations]: Found implementation of procedure length [2022-10-16 17:14:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:14:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:14:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure append [2022-10-16 17:14:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2022-10-16 17:14:43,471 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:14:43,474 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:14:43,706 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:14:43,714 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:14:43,715 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 17:14:43,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:14:43 BoogieIcfgContainer [2022-10-16 17:14:43,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:14:43,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:14:43,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:14:43,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:14:43,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:14:42" (1/3) ... [2022-10-16 17:14:43,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6541c660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:14:43, skipping insertion in model container [2022-10-16 17:14:43,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:43" (2/3) ... [2022-10-16 17:14:43,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6541c660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:14:43, skipping insertion in model container [2022-10-16 17:14:43,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:14:43" (3/3) ... [2022-10-16 17:14:43,727 INFO L112 eAbstractionObserver]: Analyzing ICFG ll_append_rec-alloca-1.i [2022-10-16 17:14:43,749 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:14:43,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-16 17:14:43,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:14:43,820 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6eaf4a7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:14:43,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-16 17:14:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 33 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 17:14:43,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 17:14:43,833 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:43,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 17:14:43,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:43,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:43,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1664484, now seen corresponding path program 1 times [2022-10-16 17:14:43,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:43,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117370970] [2022-10-16 17:14:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:43,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:44,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:44,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117370970] [2022-10-16 17:14:44,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117370970] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:44,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:14:44,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:14:44,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573282306] [2022-10-16 17:14:44,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:44,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:14:44,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:44,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:14:44,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:14:44,080 INFO L87 Difference]: Start difference. First operand has 44 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 33 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-10-16 17:14:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:44,128 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2022-10-16 17:14:44,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:14:44,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-10-16 17:14:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:44,143 INFO L225 Difference]: With dead ends: 44 [2022-10-16 17:14:44,143 INFO L226 Difference]: Without dead ends: 39 [2022-10-16 17:14:44,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:14:44,151 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:44,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:14:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-10-16 17:14:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-10-16 17:14:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 29 states have internal predecessors, (32), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:14:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-10-16 17:14:44,203 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 4 [2022-10-16 17:14:44,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:44,204 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-10-16 17:14:44,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-10-16 17:14:44,204 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-10-16 17:14:44,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-16 17:14:44,205 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:44,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-16 17:14:44,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 17:14:44,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:44,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:44,207 INFO L85 PathProgramCache]: Analyzing trace with hash 51599069, now seen corresponding path program 1 times [2022-10-16 17:14:44,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:44,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111199345] [2022-10-16 17:14:44,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:44,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:44,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:44,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111199345] [2022-10-16 17:14:44,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111199345] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:44,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:14:44,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:14:44,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359061429] [2022-10-16 17:14:44,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:44,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:14:44,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:44,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:14:44,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:14:44,244 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-10-16 17:14:44,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:44,261 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-10-16 17:14:44,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:14:44,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-16 17:14:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:44,263 INFO L225 Difference]: With dead ends: 39 [2022-10-16 17:14:44,263 INFO L226 Difference]: Without dead ends: 38 [2022-10-16 17:14:44,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:14:44,266 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:44,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 74 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:14:44,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-16 17:14:44,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-10-16 17:14:44,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 17:14:44,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-10-16 17:14:44,277 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 5 [2022-10-16 17:14:44,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:44,278 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-10-16 17:14:44,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-10-16 17:14:44,278 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-10-16 17:14:44,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-16 17:14:44,279 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:44,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:44,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 17:14:44,280 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:44,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:44,281 INFO L85 PathProgramCache]: Analyzing trace with hash 164334148, now seen corresponding path program 1 times [2022-10-16 17:14:44,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:44,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405435181] [2022-10-16 17:14:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:44,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:44,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405435181] [2022-10-16 17:14:44,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405435181] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:44,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:14:44,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:14:44,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347875635] [2022-10-16 17:14:44,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:44,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:14:44,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:44,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:14:44,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:14:44,514 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:44,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:44,636 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2022-10-16 17:14:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:14:44,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-16 17:14:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:44,640 INFO L225 Difference]: With dead ends: 50 [2022-10-16 17:14:44,640 INFO L226 Difference]: Without dead ends: 49 [2022-10-16 17:14:44,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:14:44,643 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:44,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 121 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:44,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-10-16 17:14:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2022-10-16 17:14:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 17:14:44,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2022-10-16 17:14:44,659 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 9 [2022-10-16 17:14:44,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:44,659 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2022-10-16 17:14:44,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:44,660 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2022-10-16 17:14:44,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-16 17:14:44,660 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:44,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:44,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 17:14:44,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:44,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:44,662 INFO L85 PathProgramCache]: Analyzing trace with hash 799391330, now seen corresponding path program 1 times [2022-10-16 17:14:44,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:44,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976142133] [2022-10-16 17:14:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:44,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:44,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:44,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976142133] [2022-10-16 17:14:44,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976142133] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:44,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:14:44,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:14:44,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570365790] [2022-10-16 17:14:44,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:44,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:14:44,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:14:44,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:14:44,789 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:44,863 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2022-10-16 17:14:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:14:44,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-16 17:14:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:44,866 INFO L225 Difference]: With dead ends: 68 [2022-10-16 17:14:44,866 INFO L226 Difference]: Without dead ends: 67 [2022-10-16 17:14:44,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:14:44,869 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 17 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:44,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 121 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:44,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-10-16 17:14:44,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2022-10-16 17:14:44,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 46 states have internal predecessors, (54), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-10-16 17:14:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2022-10-16 17:14:44,897 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 10 [2022-10-16 17:14:44,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:44,897 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2022-10-16 17:14:44,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2022-10-16 17:14:44,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 17:14:44,902 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:44,902 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:44,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:14:44,906 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:44,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:44,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1397758984, now seen corresponding path program 1 times [2022-10-16 17:14:44,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:44,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184831597] [2022-10-16 17:14:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:44,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:45,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:45,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:45,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184831597] [2022-10-16 17:14:45,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184831597] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:45,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187903521] [2022-10-16 17:14:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:45,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:45,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:14:45,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 17:14:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:45,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:14:45,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:45,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:14:45,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187903521] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:45,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:14:45,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-10-16 17:14:45,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82582722] [2022-10-16 17:14:45,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:45,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:14:45,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:14:45,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:14:45,375 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 17:14:45,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:45,464 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2022-10-16 17:14:45,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:14:45,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-10-16 17:14:45,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:45,467 INFO L225 Difference]: With dead ends: 62 [2022-10-16 17:14:45,467 INFO L226 Difference]: Without dead ends: 61 [2022-10-16 17:14:45,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:14:45,470 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 16 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:45,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 106 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:45,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-10-16 17:14:45,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-10-16 17:14:45,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 45 states have internal predecessors, (52), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-10-16 17:14:45,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2022-10-16 17:14:45,505 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 15 [2022-10-16 17:14:45,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:45,507 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2022-10-16 17:14:45,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 17:14:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2022-10-16 17:14:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 17:14:45,508 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:45,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:45,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:45,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:45,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:45,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:45,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1271405575, now seen corresponding path program 1 times [2022-10-16 17:14:45,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:45,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948163358] [2022-10-16 17:14:45,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:45,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:45,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:45,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:45,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948163358] [2022-10-16 17:14:45,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948163358] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:45,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637074357] [2022-10-16 17:14:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:45,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:45,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:45,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:14:45,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 17:14:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:45,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:14:45,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:45,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:14:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:46,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637074357] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:14:46,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:14:46,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-10-16 17:14:46,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768688986] [2022-10-16 17:14:46,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:14:46,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:14:46,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:46,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:14:46,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:14:46,031 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:46,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:46,239 INFO L93 Difference]: Finished difference Result 126 states and 149 transitions. [2022-10-16 17:14:46,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 17:14:46,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-16 17:14:46,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:46,242 INFO L225 Difference]: With dead ends: 126 [2022-10-16 17:14:46,242 INFO L226 Difference]: Without dead ends: 125 [2022-10-16 17:14:46,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-10-16 17:14:46,244 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 136 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:46,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 130 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-10-16 17:14:46,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109. [2022-10-16 17:14:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 78 states have (on average 1.205128205128205) internal successors, (94), 81 states have internal predecessors, (94), 16 states have call successors, (16), 12 states have call predecessors, (16), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-16 17:14:46,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2022-10-16 17:14:46,269 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 15 [2022-10-16 17:14:46,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:46,270 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2022-10-16 17:14:46,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:46,270 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2022-10-16 17:14:46,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 17:14:46,272 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:46,272 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:46,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:46,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-16 17:14:46,487 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:46,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1576473378, now seen corresponding path program 2 times [2022-10-16 17:14:46,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:46,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452803624] [2022-10-16 17:14:46,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:46,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:46,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:46,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452803624] [2022-10-16 17:14:46,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452803624] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:46,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756073013] [2022-10-16 17:14:46,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:14:46,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:46,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:46,844 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:14:46,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 17:14:46,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:14:46,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:14:46,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:14:46,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:47,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:14:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:47,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756073013] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:14:47,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:14:47,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-10-16 17:14:47,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219841804] [2022-10-16 17:14:47,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:14:47,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 17:14:47,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:47,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 17:14:47,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2022-10-16 17:14:47,283 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 14 states have internal predecessors, (48), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:47,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:47,826 INFO L93 Difference]: Finished difference Result 246 states and 287 transitions. [2022-10-16 17:14:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 17:14:47,827 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 14 states have internal predecessors, (48), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-16 17:14:47,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:47,835 INFO L225 Difference]: With dead ends: 246 [2022-10-16 17:14:47,835 INFO L226 Difference]: Without dead ends: 245 [2022-10-16 17:14:47,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=554, Invalid=1252, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 17:14:47,843 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 243 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:47,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 264 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:14:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-10-16 17:14:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 205. [2022-10-16 17:14:47,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 150 states have (on average 1.1866666666666668) internal successors, (178), 153 states have internal predecessors, (178), 28 states have call successors, (28), 24 states have call predecessors, (28), 24 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-10-16 17:14:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 233 transitions. [2022-10-16 17:14:47,920 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 233 transitions. Word has length 30 [2022-10-16 17:14:47,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:47,923 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 233 transitions. [2022-10-16 17:14:47,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 14 states have internal predecessors, (48), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:47,924 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 233 transitions. [2022-10-16 17:14:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 17:14:47,926 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:47,926 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:47,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:48,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:48,128 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:48,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash 428281987, now seen corresponding path program 1 times [2022-10-16 17:14:48,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:48,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386203194] [2022-10-16 17:14:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:48,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:48,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:48,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:48,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:14:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 17:14:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:48,506 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 17:14:48,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:48,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386203194] [2022-10-16 17:14:48,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386203194] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:48,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137388143] [2022-10-16 17:14:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:48,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:48,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:48,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:14:48,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 17:14:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:48,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:14:48,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 17:14:48,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:14:48,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137388143] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:48,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:14:48,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-10-16 17:14:48,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144770935] [2022-10-16 17:14:48,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:48,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:14:48,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:14:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:14:48,641 INFO L87 Difference]: Start difference. First operand 205 states and 233 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:14:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:48,695 INFO L93 Difference]: Finished difference Result 269 states and 302 transitions. [2022-10-16 17:14:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:14:48,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2022-10-16 17:14:48,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:48,698 INFO L225 Difference]: With dead ends: 269 [2022-10-16 17:14:48,698 INFO L226 Difference]: Without dead ends: 247 [2022-10-16 17:14:48,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-10-16 17:14:48,700 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:48,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 113 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:14:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-10-16 17:14:48,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 205. [2022-10-16 17:14:48,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 150 states have (on average 1.18) internal successors, (177), 153 states have internal predecessors, (177), 28 states have call successors, (28), 24 states have call predecessors, (28), 24 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-10-16 17:14:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 232 transitions. [2022-10-16 17:14:48,726 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 232 transitions. Word has length 36 [2022-10-16 17:14:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:48,726 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 232 transitions. [2022-10-16 17:14:48,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:14:48,727 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 232 transitions. [2022-10-16 17:14:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 17:14:48,729 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:48,730 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:48,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:48,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:48,945 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:48,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:48,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1656533417, now seen corresponding path program 1 times [2022-10-16 17:14:48,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:48,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105431733] [2022-10-16 17:14:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:48,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:14:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-16 17:14:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-16 17:14:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 17:14:49,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:49,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105431733] [2022-10-16 17:14:49,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105431733] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:49,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:14:49,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:14:49,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303453182] [2022-10-16 17:14:49,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:49,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:14:49,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:14:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:14:49,144 INFO L87 Difference]: Start difference. First operand 205 states and 232 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 17:14:49,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:49,261 INFO L93 Difference]: Finished difference Result 257 states and 287 transitions. [2022-10-16 17:14:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:14:49,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2022-10-16 17:14:49,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:49,266 INFO L225 Difference]: With dead ends: 257 [2022-10-16 17:14:49,266 INFO L226 Difference]: Without dead ends: 255 [2022-10-16 17:14:49,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:14:49,268 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 39 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:49,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 94 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-10-16 17:14:49,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 210. [2022-10-16 17:14:49,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 154 states have (on average 1.1753246753246753) internal successors, (181), 157 states have internal predecessors, (181), 28 states have call successors, (28), 24 states have call predecessors, (28), 25 states have return successors, (28), 28 states have call predecessors, (28), 27 states have call successors, (28) [2022-10-16 17:14:49,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 237 transitions. [2022-10-16 17:14:49,294 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 237 transitions. Word has length 44 [2022-10-16 17:14:49,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:49,295 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 237 transitions. [2022-10-16 17:14:49,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 17:14:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 237 transitions. [2022-10-16 17:14:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-16 17:14:49,298 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:49,298 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:49,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 17:14:49,299 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:49,299 INFO L85 PathProgramCache]: Analyzing trace with hash 534978096, now seen corresponding path program 1 times [2022-10-16 17:14:49,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:49,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458362964] [2022-10-16 17:14:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:49,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:14:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-16 17:14:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 17:14:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 17:14:49,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:49,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458362964] [2022-10-16 17:14:49,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458362964] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:49,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181168253] [2022-10-16 17:14:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:49,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:49,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:49,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:14:49,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 17:14:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 17:14:49,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 17:14:49,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:14:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 17:14:49,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181168253] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:14:49,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:14:49,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-10-16 17:14:49,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556688569] [2022-10-16 17:14:49,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:14:49,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 17:14:49,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:49,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 17:14:49,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-10-16 17:14:49,832 INFO L87 Difference]: Start difference. First operand 210 states and 237 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (9), 6 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-16 17:14:50,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:50,102 INFO L93 Difference]: Finished difference Result 270 states and 304 transitions. [2022-10-16 17:14:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 17:14:50,103 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (9), 6 states have call predecessors, (9), 1 states have call successors, (9) Word has length 49 [2022-10-16 17:14:50,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:50,105 INFO L225 Difference]: With dead ends: 270 [2022-10-16 17:14:50,105 INFO L226 Difference]: Without dead ends: 269 [2022-10-16 17:14:50,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2022-10-16 17:14:50,107 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 66 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:50,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 162 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:50,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-10-16 17:14:50,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 224. [2022-10-16 17:14:50,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 165 states have (on average 1.1757575757575758) internal successors, (194), 168 states have internal predecessors, (194), 28 states have call successors, (28), 24 states have call predecessors, (28), 28 states have return successors, (31), 31 states have call predecessors, (31), 27 states have call successors, (31) [2022-10-16 17:14:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 253 transitions. [2022-10-16 17:14:50,130 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 253 transitions. Word has length 49 [2022-10-16 17:14:50,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:50,130 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 253 transitions. [2022-10-16 17:14:50,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (9), 6 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-16 17:14:50,131 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 253 transitions. [2022-10-16 17:14:50,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-16 17:14:50,133 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:50,134 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:50,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:50,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-16 17:14:50,349 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting lengthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:50,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:50,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1786971445, now seen corresponding path program 1 times [2022-10-16 17:14:50,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:50,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680463877] [2022-10-16 17:14:50,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:50,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:14:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-16 17:14:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-16 17:14:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:14:50,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:50,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680463877] [2022-10-16 17:14:50,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680463877] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:50,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:14:50,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:14:50,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307912020] [2022-10-16 17:14:50,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:50,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:14:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:50,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:14:50,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:14:50,488 INFO L87 Difference]: Start difference. First operand 224 states and 253 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 17:14:50,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:50,571 INFO L93 Difference]: Finished difference Result 269 states and 301 transitions. [2022-10-16 17:14:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 17:14:50,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2022-10-16 17:14:50,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:50,578 INFO L225 Difference]: With dead ends: 269 [2022-10-16 17:14:50,579 INFO L226 Difference]: Without dead ends: 268 [2022-10-16 17:14:50,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:14:50,580 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:50,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 70 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:14:50,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-10-16 17:14:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 223. [2022-10-16 17:14:50,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 165 states have (on average 1.1575757575757575) internal successors, (191), 167 states have internal predecessors, (191), 28 states have call successors, (28), 24 states have call predecessors, (28), 28 states have return successors, (31), 31 states have call predecessors, (31), 27 states have call successors, (31) [2022-10-16 17:14:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 250 transitions. [2022-10-16 17:14:50,607 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 250 transitions. Word has length 53 [2022-10-16 17:14:50,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:50,607 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 250 transitions. [2022-10-16 17:14:50,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 17:14:50,608 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 250 transitions. [2022-10-16 17:14:50,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-16 17:14:50,609 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:50,610 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:50,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-16 17:14:50,610 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1845202498, now seen corresponding path program 3 times [2022-10-16 17:14:50,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:50,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633390791] [2022-10-16 17:14:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:50,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:51,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:51,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633390791] [2022-10-16 17:14:51,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633390791] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:51,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442363395] [2022-10-16 17:14:51,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:14:51,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:51,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:51,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:14:51,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 17:14:53,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-16 17:14:53,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:14:53,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-16 17:14:53,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:53,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:14:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:54,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442363395] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:14:54,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:14:54,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-10-16 17:14:54,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943893021] [2022-10-16 17:14:54,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:14:54,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 17:14:54,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:54,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 17:14:54,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:14:54,469 INFO L87 Difference]: Start difference. First operand 223 states and 250 transitions. Second operand has 48 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 26 states have internal predecessors, (96), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:55,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:55,959 INFO L93 Difference]: Finished difference Result 504 states and 580 transitions. [2022-10-16 17:14:55,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-10-16 17:14:55,960 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 26 states have internal predecessors, (96), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-10-16 17:14:55,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:55,963 INFO L225 Difference]: With dead ends: 504 [2022-10-16 17:14:55,963 INFO L226 Difference]: Without dead ends: 503 [2022-10-16 17:14:55,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2534, Invalid=5656, Unknown=0, NotChecked=0, Total=8190 [2022-10-16 17:14:55,969 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 747 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:55,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 357 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:14:55,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-10-16 17:14:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 415. [2022-10-16 17:14:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 309 states have (on average 1.161812297734628) internal successors, (359), 311 states have internal predecessors, (359), 52 states have call successors, (52), 48 states have call predecessors, (52), 52 states have return successors, (55), 55 states have call predecessors, (55), 51 states have call successors, (55) [2022-10-16 17:14:56,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 466 transitions. [2022-10-16 17:14:56,008 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 466 transitions. Word has length 60 [2022-10-16 17:14:56,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:56,009 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 466 transitions. [2022-10-16 17:14:56,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 26 states have internal predecessors, (96), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:56,009 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 466 transitions. [2022-10-16 17:14:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-16 17:14:56,011 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:56,011 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:56,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:56,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:56,226 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:56,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:56,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1650255657, now seen corresponding path program 2 times [2022-10-16 17:14:56,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:56,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695248145] [2022-10-16 17:14:56,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:56,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:56,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:56,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:56,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:14:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:56,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-16 17:14:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-16 17:14:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:56,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:56,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:56,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:56,629 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-16 17:14:56,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:56,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695248145] [2022-10-16 17:14:56,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695248145] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:56,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093071277] [2022-10-16 17:14:56,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:14:56,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:56,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:56,632 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:14:56,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 17:14:56,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:14:56,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:14:56,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 17:14:56,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-16 17:14:56,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:14:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-16 17:14:57,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093071277] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:14:57,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:14:57,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 25 [2022-10-16 17:14:57,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185882399] [2022-10-16 17:14:57,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:14:57,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 17:14:57,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:57,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 17:14:57,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:14:57,497 INFO L87 Difference]: Start difference. First operand 415 states and 466 transitions. Second operand has 26 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 1 states have call successors, (10), 3 states have call predecessors, (10), 12 states have return successors, (15), 12 states have call predecessors, (15), 1 states have call successors, (15) [2022-10-16 17:14:58,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:58,000 INFO L93 Difference]: Finished difference Result 539 states and 598 transitions. [2022-10-16 17:14:58,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-16 17:14:58,001 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 1 states have call successors, (10), 3 states have call predecessors, (10), 12 states have return successors, (15), 12 states have call predecessors, (15), 1 states have call successors, (15) Word has length 76 [2022-10-16 17:14:58,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:58,005 INFO L225 Difference]: With dead ends: 539 [2022-10-16 17:14:58,005 INFO L226 Difference]: Without dead ends: 538 [2022-10-16 17:14:58,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=442, Invalid=1628, Unknown=0, NotChecked=0, Total=2070 [2022-10-16 17:14:58,008 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 98 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:58,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 231 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:14:58,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-10-16 17:14:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 445. [2022-10-16 17:14:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 333 states have (on average 1.15015015015015) internal successors, (383), 335 states have internal predecessors, (383), 52 states have call successors, (52), 48 states have call predecessors, (52), 58 states have return successors, (61), 61 states have call predecessors, (61), 51 states have call successors, (61) [2022-10-16 17:14:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 496 transitions. [2022-10-16 17:14:58,050 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 496 transitions. Word has length 76 [2022-10-16 17:14:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:58,051 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 496 transitions. [2022-10-16 17:14:58,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 1 states have call successors, (10), 3 states have call predecessors, (10), 12 states have return successors, (15), 12 states have call predecessors, (15), 1 states have call successors, (15) [2022-10-16 17:14:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 496 transitions. [2022-10-16 17:14:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-16 17:14:58,054 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:58,054 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:58,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:58,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:58,267 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:58,268 INFO L85 PathProgramCache]: Analyzing trace with hash -718230086, now seen corresponding path program 3 times [2022-10-16 17:14:58,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:58,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785409365] [2022-10-16 17:14:58,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:58,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:58,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:14:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:58,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-16 17:14:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:58,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 17:14:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:58,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:59,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:59,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:59,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:59,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:59,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:59,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-10-16 17:14:59,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:59,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785409365] [2022-10-16 17:14:59,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785409365] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:59,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467422581] [2022-10-16 17:14:59,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:14:59,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:59,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:59,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:14:59,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 17:15:00,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 17:15:00,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:15:00,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 75 conjunts are in the unsatisfiable core [2022-10-16 17:15:00,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:15:00,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 17:15:00,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 17:15:00,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:15:00,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:15:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 71 proven. 53 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-10-16 17:15:00,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:15:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 71 proven. 53 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-10-16 17:15:01,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467422581] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:15:01,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:15:01,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 17] total 54 [2022-10-16 17:15:01,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967478781] [2022-10-16 17:15:01,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:15:01,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-10-16 17:15:01,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:15:01,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-10-16 17:15:01,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2624, Unknown=0, NotChecked=0, Total=2862 [2022-10-16 17:15:01,633 INFO L87 Difference]: Start difference. First operand 445 states and 496 transitions. Second operand has 54 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 42 states have internal predecessors, (103), 8 states have call successors, (16), 7 states have call predecessors, (16), 18 states have return successors, (24), 20 states have call predecessors, (24), 6 states have call successors, (24) [2022-10-16 17:15:03,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:15:03,940 INFO L93 Difference]: Finished difference Result 744 states and 805 transitions. [2022-10-16 17:15:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-10-16 17:15:03,941 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 42 states have internal predecessors, (103), 8 states have call successors, (16), 7 states have call predecessors, (16), 18 states have return successors, (24), 20 states have call predecessors, (24), 6 states have call successors, (24) Word has length 121 [2022-10-16 17:15:03,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:15:03,945 INFO L225 Difference]: With dead ends: 744 [2022-10-16 17:15:03,945 INFO L226 Difference]: Without dead ends: 689 [2022-10-16 17:15:03,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=916, Invalid=7094, Unknown=0, NotChecked=0, Total=8010 [2022-10-16 17:15:03,951 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 353 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:15:03,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 563 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:15:03,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-10-16 17:15:03,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 464. [2022-10-16 17:15:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 345 states have (on average 1.144927536231884) internal successors, (395), 349 states have internal predecessors, (395), 55 states have call successors, (55), 49 states have call predecessors, (55), 62 states have return successors, (68), 65 states have call predecessors, (68), 52 states have call successors, (68) [2022-10-16 17:15:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 518 transitions. [2022-10-16 17:15:03,997 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 518 transitions. Word has length 121 [2022-10-16 17:15:03,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:15:03,998 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 518 transitions. [2022-10-16 17:15:03,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 42 states have internal predecessors, (103), 8 states have call successors, (16), 7 states have call predecessors, (16), 18 states have return successors, (24), 20 states have call predecessors, (24), 6 states have call successors, (24) [2022-10-16 17:15:03,998 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 518 transitions. [2022-10-16 17:15:04,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-10-16 17:15:04,001 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:15:04,001 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 12, 12, 11, 11, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:15:04,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-10-16 17:15:04,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 17:15:04,216 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:15:04,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:15:04,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2070059807, now seen corresponding path program 4 times [2022-10-16 17:15:04,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:15:04,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591856894] [2022-10-16 17:15:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:15:04,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:15:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:04,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:15:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:04,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:15:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:04,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:15:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:04,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-16 17:15:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:04,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-16 17:15:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:04,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:05,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:05,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:05,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:05,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:05,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:05,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:06,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-10-16 17:15:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:15:06,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591856894] [2022-10-16 17:15:06,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591856894] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:15:06,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374008254] [2022-10-16 17:15:06,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:15:06,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:15:06,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:15:06,075 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:15:06,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 17:15:06,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:15:06,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:15:06,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 75 conjunts are in the unsatisfiable core [2022-10-16 17:15:06,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:15:06,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 17:15:06,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 17:15:06,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:15:06,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:15:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2022-10-16 17:15:06,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:15:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 27 proven. 74 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-10-16 17:15:07,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374008254] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:15:07,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:15:07,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 18, 17] total 55 [2022-10-16 17:15:07,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736910291] [2022-10-16 17:15:07,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:15:07,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-10-16 17:15:07,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:15:07,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-10-16 17:15:07,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=2710, Unknown=0, NotChecked=0, Total=2970 [2022-10-16 17:15:07,664 INFO L87 Difference]: Start difference. First operand 464 states and 518 transitions. Second operand has 55 states, 50 states have (on average 2.14) internal successors, (107), 42 states have internal predecessors, (107), 8 states have call successors, (17), 9 states have call predecessors, (17), 19 states have return successors, (25), 20 states have call predecessors, (25), 5 states have call successors, (25) [2022-10-16 17:15:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:15:09,538 INFO L93 Difference]: Finished difference Result 761 states and 821 transitions. [2022-10-16 17:15:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-10-16 17:15:09,538 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 50 states have (on average 2.14) internal successors, (107), 42 states have internal predecessors, (107), 8 states have call successors, (17), 9 states have call predecessors, (17), 19 states have return successors, (25), 20 states have call predecessors, (25), 5 states have call successors, (25) Word has length 132 [2022-10-16 17:15:09,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:15:09,543 INFO L225 Difference]: With dead ends: 761 [2022-10-16 17:15:09,543 INFO L226 Difference]: Without dead ends: 689 [2022-10-16 17:15:09,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2189 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=818, Invalid=7372, Unknown=0, NotChecked=0, Total=8190 [2022-10-16 17:15:09,548 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 143 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:15:09,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 493 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:15:09,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-10-16 17:15:09,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 464. [2022-10-16 17:15:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 346 states have (on average 1.1445086705202312) internal successors, (396), 350 states have internal predecessors, (396), 53 states have call successors, (53), 48 states have call predecessors, (53), 63 states have return successors, (68), 65 states have call predecessors, (68), 52 states have call successors, (68) [2022-10-16 17:15:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 517 transitions. [2022-10-16 17:15:09,591 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 517 transitions. Word has length 132 [2022-10-16 17:15:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:15:09,591 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 517 transitions. [2022-10-16 17:15:09,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 50 states have (on average 2.14) internal successors, (107), 42 states have internal predecessors, (107), 8 states have call successors, (17), 9 states have call predecessors, (17), 19 states have return successors, (25), 20 states have call predecessors, (25), 5 states have call successors, (25) [2022-10-16 17:15:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 517 transitions. [2022-10-16 17:15:09,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-16 17:15:09,594 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:15:09,595 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:15:09,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 17:15:09,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 17:15:09,811 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:15:09,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:15:09,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2032524418, now seen corresponding path program 4 times [2022-10-16 17:15:09,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:15:09,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462771718] [2022-10-16 17:15:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:15:09,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:15:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:15:11,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:15:11,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462771718] [2022-10-16 17:15:11,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462771718] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:15:11,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91021014] [2022-10-16 17:15:11,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:15:11,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:15:11,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:15:11,922 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:15:11,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 17:15:16,001 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:15:16,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:15:16,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-16 17:15:16,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:15:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:15:16,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:15:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:15:18,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91021014] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:15:18,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:15:18,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-10-16 17:15:18,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947039943] [2022-10-16 17:15:18,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:15:18,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-16 17:15:18,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:15:18,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-16 17:15:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2022-10-16 17:15:18,655 INFO L87 Difference]: Start difference. First operand 464 states and 517 transitions. Second operand has 96 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 50 states have internal predecessors, (192), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:15:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:15:23,490 INFO L93 Difference]: Finished difference Result 1031 states and 1181 transitions. [2022-10-16 17:15:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-10-16 17:15:23,491 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 50 states have internal predecessors, (192), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-10-16 17:15:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:15:23,497 INFO L225 Difference]: With dead ends: 1031 [2022-10-16 17:15:23,498 INFO L226 Difference]: Without dead ends: 1030 [2022-10-16 17:15:23,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8376 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=10814, Invalid=23968, Unknown=0, NotChecked=0, Total=34782 [2022-10-16 17:15:23,507 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 1754 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 761 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 761 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:15:23,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 531 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [761 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:15:23,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-10-16 17:15:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 848. [2022-10-16 17:15:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 634 states have (on average 1.1545741324921135) internal successors, (732), 638 states have internal predecessors, (732), 101 states have call successors, (101), 96 states have call predecessors, (101), 111 states have return successors, (116), 113 states have call predecessors, (116), 100 states have call successors, (116) [2022-10-16 17:15:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 949 transitions. [2022-10-16 17:15:23,567 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 949 transitions. Word has length 120 [2022-10-16 17:15:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:15:23,568 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 949 transitions. [2022-10-16 17:15:23,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 50 states have internal predecessors, (192), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:15:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 949 transitions. [2022-10-16 17:15:23,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-10-16 17:15:23,571 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:15:23,572 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 12, 12, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:15:23,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 17:15:23,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 17:15:23,785 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:15:23,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:15:23,786 INFO L85 PathProgramCache]: Analyzing trace with hash 598238840, now seen corresponding path program 1 times [2022-10-16 17:15:23,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:15:23,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551874389] [2022-10-16 17:15:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:15:23,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:15:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:15:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:15:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:15:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-16 17:15:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 17:15:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 26 proven. 45 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-10-16 17:15:24,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:15:24,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551874389] [2022-10-16 17:15:24,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551874389] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:15:24,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173431320] [2022-10-16 17:15:24,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:15:24,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:15:24,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:15:24,446 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:15:24,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 17:15:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:24,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-16 17:15:24,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:15:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-10-16 17:15:25,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:15:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-10-16 17:15:33,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173431320] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:15:33,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:15:33,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 27, 27] total 62 [2022-10-16 17:15:33,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949856236] [2022-10-16 17:15:33,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:15:33,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-10-16 17:15:33,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:15:33,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-10-16 17:15:33,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=772, Invalid=3010, Unknown=0, NotChecked=0, Total=3782 [2022-10-16 17:15:33,474 INFO L87 Difference]: Start difference. First operand 848 states and 949 transitions. Second operand has 62 states, 62 states have (on average 2.370967741935484) internal successors, (147), 59 states have internal predecessors, (147), 4 states have call successors, (14), 4 states have call predecessors, (14), 29 states have return successors, (37), 31 states have call predecessors, (37), 4 states have call successors, (37) [2022-10-16 17:15:36,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:15:36,046 INFO L93 Difference]: Finished difference Result 1181 states and 1304 transitions. [2022-10-16 17:15:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-10-16 17:15:36,047 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.370967741935484) internal successors, (147), 59 states have internal predecessors, (147), 4 states have call successors, (14), 4 states have call predecessors, (14), 29 states have return successors, (37), 31 states have call predecessors, (37), 4 states have call successors, (37) Word has length 143 [2022-10-16 17:15:36,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:15:36,054 INFO L225 Difference]: With dead ends: 1181 [2022-10-16 17:15:36,054 INFO L226 Difference]: Without dead ends: 1109 [2022-10-16 17:15:36,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3293 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2361, Invalid=11681, Unknown=0, NotChecked=0, Total=14042 [2022-10-16 17:15:36,058 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 236 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:15:36,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 146 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:15:36,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-10-16 17:15:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 924. [2022-10-16 17:15:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 693 states have (on average 1.1414141414141414) internal successors, (791), 698 states have internal predecessors, (791), 103 states have call successors, (103), 96 states have call predecessors, (103), 126 states have return successors, (133), 129 states have call predecessors, (133), 102 states have call successors, (133) [2022-10-16 17:15:36,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1027 transitions. [2022-10-16 17:15:36,125 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1027 transitions. Word has length 143 [2022-10-16 17:15:36,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:15:36,126 INFO L495 AbstractCegarLoop]: Abstraction has 924 states and 1027 transitions. [2022-10-16 17:15:36,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.370967741935484) internal successors, (147), 59 states have internal predecessors, (147), 4 states have call successors, (14), 4 states have call predecessors, (14), 29 states have return successors, (37), 31 states have call predecessors, (37), 4 states have call successors, (37) [2022-10-16 17:15:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1027 transitions. [2022-10-16 17:15:36,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-10-16 17:15:36,132 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:15:36,133 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 26, 26, 5, 5, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:15:36,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 17:15:36,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 17:15:36,346 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:15:36,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:15:36,347 INFO L85 PathProgramCache]: Analyzing trace with hash 205499130, now seen corresponding path program 5 times [2022-10-16 17:15:36,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:15:36,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526140635] [2022-10-16 17:15:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:15:36,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:15:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:36,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:15:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:36,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:15:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:36,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-16 17:15:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:15:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:36,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:15:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-16 17:15:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:36,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 17:15:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:36,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:36,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 54 proven. 94 refuted. 0 times theorem prover too weak. 2740 trivial. 0 not checked. [2022-10-16 17:15:37,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:15:37,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526140635] [2022-10-16 17:15:37,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526140635] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:15:37,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900888828] [2022-10-16 17:15:37,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:15:37,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:15:37,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:15:37,778 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:15:37,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 17:15:38,218 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2022-10-16 17:15:38,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:15:38,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 55 conjunts are in the unsatisfiable core [2022-10-16 17:15:38,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:15:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2022-10-16 17:15:39,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:17:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2022-10-16 17:17:01,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900888828] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:17:01,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:17:01,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 55, 55] total 118 [2022-10-16 17:17:01,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221632878] [2022-10-16 17:17:01,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:17:01,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-10-16 17:17:01,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:01,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-10-16 17:17:01,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3096, Invalid=10710, Unknown=0, NotChecked=0, Total=13806 [2022-10-16 17:17:01,340 INFO L87 Difference]: Start difference. First operand 924 states and 1027 transitions. Second operand has 118 states, 118 states have (on average 2.1779661016949152) internal successors, (257), 115 states have internal predecessors, (257), 4 states have call successors, (13), 4 states have call predecessors, (13), 57 states have return successors, (64), 59 states have call predecessors, (64), 4 states have call successors, (64) [2022-10-16 17:17:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:08,670 INFO L93 Difference]: Finished difference Result 1389 states and 1523 transitions. [2022-10-16 17:17:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-10-16 17:17:08,671 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.1779661016949152) internal successors, (257), 115 states have internal predecessors, (257), 4 states have call successors, (13), 4 states have call predecessors, (13), 57 states have return successors, (64), 59 states have call predecessors, (64), 4 states have call successors, (64) Word has length 265 [2022-10-16 17:17:08,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:08,680 INFO L225 Difference]: With dead ends: 1389 [2022-10-16 17:17:08,680 INFO L226 Difference]: Without dead ends: 1249 [2022-10-16 17:17:08,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13313 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=9376, Invalid=42836, Unknown=0, NotChecked=0, Total=52212 [2022-10-16 17:17:08,690 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 266 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:08,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 413 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:17:08,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-10-16 17:17:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1062. [2022-10-16 17:17:08,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 804 states have (on average 1.1218905472636815) internal successors, (902), 809 states have internal predecessors, (902), 102 states have call successors, (102), 96 states have call predecessors, (102), 154 states have return successors, (159), 156 states have call predecessors, (159), 101 states have call successors, (159) [2022-10-16 17:17:08,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1163 transitions. [2022-10-16 17:17:08,787 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1163 transitions. Word has length 265 [2022-10-16 17:17:08,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:08,788 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1163 transitions. [2022-10-16 17:17:08,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.1779661016949152) internal successors, (257), 115 states have internal predecessors, (257), 4 states have call successors, (13), 4 states have call predecessors, (13), 57 states have return successors, (64), 59 states have call predecessors, (64), 4 states have call successors, (64) [2022-10-16 17:17:08,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1163 transitions. [2022-10-16 17:17:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-10-16 17:17:08,794 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:08,794 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:17:08,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 17:17:09,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 17:17:09,009 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:17:09,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:09,010 INFO L85 PathProgramCache]: Analyzing trace with hash 653777154, now seen corresponding path program 5 times [2022-10-16 17:17:09,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:09,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867947653] [2022-10-16 17:17:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:09,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:17,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:17,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867947653] [2022-10-16 17:17:17,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867947653] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:17:17,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576749658] [2022-10-16 17:17:17,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:17:17,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:17,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:17,509 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:17:17,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process