/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/verifythis/prefixsum_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:28:10,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:28:11,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:28:11,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:28:11,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:28:11,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:28:11,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:28:11,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:28:11,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:28:11,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:28:11,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:28:11,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:28:11,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:28:11,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:28:11,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:28:11,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:28:11,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:28:11,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:28:11,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:28:11,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:28:11,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:28:11,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:28:11,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:28:11,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:28:11,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 17:28:11,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 17:28:11,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 17:28:11,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 17:28:11,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 17:28:11,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 17:28:11,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 17:28:11,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 17:28:11,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 17:28:11,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:28:11,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:28:11,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:28:11,166 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 17:28:11,224 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:28:11,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:28:11,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:28:11,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:28:11,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:28:11,227 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:28:11,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:28:11,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:28:11,232 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:28:11,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:28:11,233 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:28:11,233 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:28:11,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:28:11,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:28:11,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:28:11,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:28:11,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:28:11,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:28:11,235 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:28:11,235 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:28:11,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:28:11,235 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:28:11,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:28:11,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:28:11,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:28:11,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:28:11,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:28:11,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:28:11,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:28:11,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:28:11,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:28:11,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:28:11,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:28:11,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:28:11,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:28:11,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:28:11,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:28:11,674 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:28:11,675 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:28:11,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/prefixsum_iter.c [2022-10-16 17:28:11,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfc60d50/8d01fa7667234a43bdb952c9dea94bd3/FLAGf39fc85d5 [2022-10-16 17:28:12,436 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:28:12,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_iter.c [2022-10-16 17:28:12,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfc60d50/8d01fa7667234a43bdb952c9dea94bd3/FLAGf39fc85d5 [2022-10-16 17:28:12,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfc60d50/8d01fa7667234a43bdb952c9dea94bd3 [2022-10-16 17:28:12,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:28:12,801 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:28:12,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:28:12,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:28:12,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:28:12,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:28:12" (1/1) ... [2022-10-16 17:28:12,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abafd6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:12, skipping insertion in model container [2022-10-16 17:28:12,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:28:12" (1/1) ... [2022-10-16 17:28:12,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:28:12,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:28:13,007 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_iter.c[526,539] [2022-10-16 17:28:13,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:28:13,052 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:28:13,065 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_iter.c[526,539] [2022-10-16 17:28:13,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:28:13,099 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:28:13,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13 WrapperNode [2022-10-16 17:28:13,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:28:13,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:28:13,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:28:13,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:28:13,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:13,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:13,156 INFO L138 Inliner]: procedures = 22, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 161 [2022-10-16 17:28:13,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:28:13,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:28:13,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:28:13,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:28:13,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:13,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:13,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:13,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:13,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:13,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:13,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:13,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:13,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:28:13,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:28:13,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:28:13,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:28:13,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13" (1/1) ... [2022-10-16 17:28:13,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:28:13,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:13,253 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 17:28:13,260 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 17:28:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 17:28:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 17:28:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 17:28:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 17:28:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 17:28:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 17:28:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:28:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:28:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 17:28:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-16 17:28:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-16 17:28:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 17:28:13,415 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:28:13,418 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:28:13,880 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:28:13,890 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:28:13,890 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-10-16 17:28:13,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:28:13 BoogieIcfgContainer [2022-10-16 17:28:13,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:28:13,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:28:13,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:28:13,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:28:13,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:28:12" (1/3) ... [2022-10-16 17:28:13,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12db9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:28:13, skipping insertion in model container [2022-10-16 17:28:13,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:28:13" (2/3) ... [2022-10-16 17:28:13,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12db9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:28:13, skipping insertion in model container [2022-10-16 17:28:13,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:28:13" (3/3) ... [2022-10-16 17:28:13,907 INFO L112 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2022-10-16 17:28:13,931 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:28:13,931 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-10-16 17:28:14,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:28:14,035 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;@31993e83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:28:14,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-10-16 17:28:14,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 67 states have (on average 1.7761194029850746) internal successors, (119), 103 states have internal predecessors, (119), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:14,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 17:28:14,052 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:14,053 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 17:28:14,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:14,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:14,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1396752265, now seen corresponding path program 1 times [2022-10-16 17:28:14,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:14,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717399585] [2022-10-16 17:28:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:14,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:14,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:14,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:14,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:14,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:14,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:14,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717399585] [2022-10-16 17:28:14,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717399585] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:14,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:14,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 17:28:14,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903135753] [2022-10-16 17:28:14,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:14,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:28:14,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:14,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:28:14,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:28:14,513 INFO L87 Difference]: Start difference. First operand has 110 states, 67 states have (on average 1.7761194029850746) internal successors, (119), 103 states have internal predecessors, (119), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:28:14,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:14,605 INFO L93 Difference]: Finished difference Result 217 states and 252 transitions. [2022-10-16 17:28:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:28:14,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-10-16 17:28:14,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:14,630 INFO L225 Difference]: With dead ends: 217 [2022-10-16 17:28:14,630 INFO L226 Difference]: Without dead ends: 106 [2022-10-16 17:28:14,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 17:28:14,640 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 3 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:14,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 216 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:28:14,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-10-16 17:28:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-10-16 17:28:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.65625) internal successors, (106), 99 states have internal predecessors, (106), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:14,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2022-10-16 17:28:14,702 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 30 [2022-10-16 17:28:14,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:14,703 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2022-10-16 17:28:14,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:28:14,704 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2022-10-16 17:28:14,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 17:28:14,706 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:14,706 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 17:28:14,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 17:28:14,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:14,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:14,708 INFO L85 PathProgramCache]: Analyzing trace with hash -129556023, now seen corresponding path program 1 times [2022-10-16 17:28:14,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:14,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738224969] [2022-10-16 17:28:14,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:14,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:14,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:14,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:14,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:15,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:15,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738224969] [2022-10-16 17:28:15,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738224969] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:15,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:15,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:28:15,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928654245] [2022-10-16 17:28:15,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:15,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:28:15,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:15,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:28:15,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:28:15,006 INFO L87 Difference]: Start difference. First operand 106 states and 114 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:15,158 INFO L93 Difference]: Finished difference Result 192 states and 205 transitions. [2022-10-16 17:28:15,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:28:15,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2022-10-16 17:28:15,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:15,167 INFO L225 Difference]: With dead ends: 192 [2022-10-16 17:28:15,167 INFO L226 Difference]: Without dead ends: 190 [2022-10-16 17:28:15,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 17:28:15,172 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 91 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:15,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 401 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:28:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-10-16 17:28:15,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 110. [2022-10-16 17:28:15,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 103 states have internal predecessors, (111), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:15,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 119 transitions. [2022-10-16 17:28:15,214 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 119 transitions. Word has length 30 [2022-10-16 17:28:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:15,218 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 119 transitions. [2022-10-16 17:28:15,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 119 transitions. [2022-10-16 17:28:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 17:28:15,222 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:15,222 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 17:28:15,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 17:28:15,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:15,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:15,224 INFO L85 PathProgramCache]: Analyzing trace with hash 278679206, now seen corresponding path program 1 times [2022-10-16 17:28:15,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:15,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316005] [2022-10-16 17:28:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:15,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:15,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:15,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:15,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:15,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316005] [2022-10-16 17:28:15,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316005] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:15,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:15,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 17:28:15,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419281023] [2022-10-16 17:28:15,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:15,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 17:28:15,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:15,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 17:28:15,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 17:28:15,390 INFO L87 Difference]: Start difference. First operand 110 states and 119 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:15,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:15,540 INFO L93 Difference]: Finished difference Result 189 states and 202 transitions. [2022-10-16 17:28:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 17:28:15,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-10-16 17:28:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:15,548 INFO L225 Difference]: With dead ends: 189 [2022-10-16 17:28:15,548 INFO L226 Difference]: Without dead ends: 183 [2022-10-16 17:28:15,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 17:28:15,553 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 78 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:15,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 259 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:28:15,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-10-16 17:28:15,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 124. [2022-10-16 17:28:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 82 states have (on average 1.6219512195121952) internal successors, (133), 117 states have internal predecessors, (133), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2022-10-16 17:28:15,585 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 31 [2022-10-16 17:28:15,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:15,585 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2022-10-16 17:28:15,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:15,586 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2022-10-16 17:28:15,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-16 17:28:15,588 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:15,588 INFO L195 NwaCegarLoop]: trace histogram [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 17:28:15,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 17:28:15,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:15,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1522725488, now seen corresponding path program 1 times [2022-10-16 17:28:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:15,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68554833] [2022-10-16 17:28:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:15,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:15,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:15,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:15,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:15,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68554833] [2022-10-16 17:28:15,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68554833] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:15,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:15,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 17:28:15,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025091871] [2022-10-16 17:28:15,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:15,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:28:15,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:15,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:28:15,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 17:28:15,929 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:17,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:28:18,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:18,324 INFO L93 Difference]: Finished difference Result 424 states and 484 transitions. [2022-10-16 17:28:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 17:28:18,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2022-10-16 17:28:18,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:18,328 INFO L225 Difference]: With dead ends: 424 [2022-10-16 17:28:18,329 INFO L226 Difference]: Without dead ends: 423 [2022-10-16 17:28:18,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:28:18,331 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 625 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:18,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 554 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-10-16 17:28:18,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-10-16 17:28:18,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 156. [2022-10-16 17:28:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 114 states have (on average 1.6403508771929824) internal successors, (187), 149 states have internal predecessors, (187), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 195 transitions. [2022-10-16 17:28:18,352 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 195 transitions. Word has length 33 [2022-10-16 17:28:18,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:18,353 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 195 transitions. [2022-10-16 17:28:18,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 195 transitions. [2022-10-16 17:28:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-16 17:28:18,355 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:18,355 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-10-16 17:28:18,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:28:18,355 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:18,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1493133189, now seen corresponding path program 1 times [2022-10-16 17:28:18,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:18,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864128807] [2022-10-16 17:28:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:18,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:18,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:18,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864128807] [2022-10-16 17:28:18,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864128807] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:18,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357682099] [2022-10-16 17:28:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:18,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:18,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:18,527 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 17:28:18,552 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 17:28:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:18,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 17:28:18,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:18,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:18,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357682099] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:18,790 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:18,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-10-16 17:28:18,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312147305] [2022-10-16 17:28:18,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:18,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 17:28:18,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:18,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 17:28:18,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:28:18,793 INFO L87 Difference]: Start difference. First operand 156 states and 195 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:19,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:19,020 INFO L93 Difference]: Finished difference Result 515 states and 585 transitions. [2022-10-16 17:28:19,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 17:28:19,021 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2022-10-16 17:28:19,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:19,025 INFO L225 Difference]: With dead ends: 515 [2022-10-16 17:28:19,025 INFO L226 Difference]: Without dead ends: 514 [2022-10-16 17:28:19,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-10-16 17:28:19,027 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 621 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:19,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 850 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:28:19,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-10-16 17:28:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 167. [2022-10-16 17:28:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 125 states have (on average 1.624) internal successors, (203), 160 states have internal predecessors, (203), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 211 transitions. [2022-10-16 17:28:19,044 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 211 transitions. Word has length 34 [2022-10-16 17:28:19,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:19,044 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 211 transitions. [2022-10-16 17:28:19,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:19,045 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 211 transitions. [2022-10-16 17:28:19,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-16 17:28:19,046 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:19,046 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 17:28:19,088 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 17:28:19,261 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 17:28:19,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:19,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:19,263 INFO L85 PathProgramCache]: Analyzing trace with hash -40150001, now seen corresponding path program 1 times [2022-10-16 17:28:19,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:19,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090599155] [2022-10-16 17:28:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:19,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:19,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:19,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090599155] [2022-10-16 17:28:19,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090599155] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:19,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:19,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 17:28:19,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786652686] [2022-10-16 17:28:19,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:19,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 17:28:19,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:19,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 17:28:19,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:28:19,653 INFO L87 Difference]: Start difference. First operand 167 states and 211 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:28:21,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:28:22,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:22,113 INFO L93 Difference]: Finished difference Result 323 states and 412 transitions. [2022-10-16 17:28:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 17:28:22,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-10-16 17:28:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:22,117 INFO L225 Difference]: With dead ends: 323 [2022-10-16 17:28:22,117 INFO L226 Difference]: Without dead ends: 322 [2022-10-16 17:28:22,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:28:22,119 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 340 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:22,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 538 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 100 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-10-16 17:28:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-10-16 17:28:22,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 260. [2022-10-16 17:28:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 215 states have (on average 1.6186046511627907) internal successors, (348), 250 states have internal predecessors, (348), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 17:28:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 362 transitions. [2022-10-16 17:28:22,148 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 362 transitions. Word has length 34 [2022-10-16 17:28:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:22,149 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 362 transitions. [2022-10-16 17:28:22,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 17:28:22,150 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 362 transitions. [2022-10-16 17:28:22,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-16 17:28:22,151 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:22,151 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 17:28:22,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 17:28:22,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:22,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash -39472527, now seen corresponding path program 1 times [2022-10-16 17:28:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:22,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195014109] [2022-10-16 17:28:22,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:22,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:22,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:22,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195014109] [2022-10-16 17:28:22,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195014109] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:22,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:22,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:28:22,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068725773] [2022-10-16 17:28:22,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:22,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:28:22,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:22,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:28:22,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:28:22,292 INFO L87 Difference]: Start difference. First operand 260 states and 362 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:22,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:22,509 INFO L93 Difference]: Finished difference Result 377 states and 500 transitions. [2022-10-16 17:28:22,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:28:22,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2022-10-16 17:28:22,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:22,512 INFO L225 Difference]: With dead ends: 377 [2022-10-16 17:28:22,513 INFO L226 Difference]: Without dead ends: 375 [2022-10-16 17:28:22,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:28:22,514 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 89 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:22,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 345 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-10-16 17:28:22,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 292. [2022-10-16 17:28:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 247 states have (on average 1.6032388663967612) internal successors, (396), 282 states have internal predecessors, (396), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 17:28:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 410 transitions. [2022-10-16 17:28:22,542 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 410 transitions. Word has length 34 [2022-10-16 17:28:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:22,542 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 410 transitions. [2022-10-16 17:28:22,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 410 transitions. [2022-10-16 17:28:22,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-16 17:28:22,544 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:22,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2022-10-16 17:28:22,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 17:28:22,545 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:22,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:22,546 INFO L85 PathProgramCache]: Analyzing trace with hash -957511328, now seen corresponding path program 1 times [2022-10-16 17:28:22,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:22,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720451668] [2022-10-16 17:28:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:22,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:22,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:22,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720451668] [2022-10-16 17:28:22,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720451668] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:22,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416618173] [2022-10-16 17:28:22,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:22,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:22,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:22,693 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 17:28:22,697 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 17:28:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:22,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 17:28:22,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:22,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:28:22,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416618173] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:22,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:28:22,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-10-16 17:28:22,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024060731] [2022-10-16 17:28:22,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:22,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:28:22,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:22,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:28:22,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:28:22,829 INFO L87 Difference]: Start difference. First operand 292 states and 410 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:22,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:22,924 INFO L93 Difference]: Finished difference Result 354 states and 462 transitions. [2022-10-16 17:28:22,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:28:22,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2022-10-16 17:28:22,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:22,927 INFO L225 Difference]: With dead ends: 354 [2022-10-16 17:28:22,927 INFO L226 Difference]: Without dead ends: 353 [2022-10-16 17:28:22,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:28:22,928 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 177 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:22,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 672 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:28:22,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-10-16 17:28:22,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 291. [2022-10-16 17:28:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 247 states have (on average 1.5789473684210527) internal successors, (390), 281 states have internal predecessors, (390), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 17:28:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 404 transitions. [2022-10-16 17:28:22,954 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 404 transitions. Word has length 35 [2022-10-16 17:28:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:22,955 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 404 transitions. [2022-10-16 17:28:22,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:22,955 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 404 transitions. [2022-10-16 17:28:22,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-16 17:28:22,956 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:22,956 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 17:28:22,991 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 17:28:23,171 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,SelfDestructingSolverStorable7 [2022-10-16 17:28:23,172 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:23,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1244649902, now seen corresponding path program 1 times [2022-10-16 17:28:23,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:23,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652242993] [2022-10-16 17:28:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:23,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:23,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:23,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652242993] [2022-10-16 17:28:23,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652242993] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:23,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:23,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:28:23,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383094418] [2022-10-16 17:28:23,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:23,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:28:23,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:23,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:28:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:28:23,310 INFO L87 Difference]: Start difference. First operand 291 states and 404 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:23,585 INFO L93 Difference]: Finished difference Result 360 states and 470 transitions. [2022-10-16 17:28:23,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:28:23,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2022-10-16 17:28:23,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:23,588 INFO L225 Difference]: With dead ends: 360 [2022-10-16 17:28:23,588 INFO L226 Difference]: Without dead ends: 358 [2022-10-16 17:28:23,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:28:23,589 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 129 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:23,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 405 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:23,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-10-16 17:28:23,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 307. [2022-10-16 17:28:23,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 263 states have (on average 1.5551330798479088) internal successors, (409), 297 states have internal predecessors, (409), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 17:28:23,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 423 transitions. [2022-10-16 17:28:23,616 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 423 transitions. Word has length 35 [2022-10-16 17:28:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:23,617 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 423 transitions. [2022-10-16 17:28:23,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 423 transitions. [2022-10-16 17:28:23,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-16 17:28:23,618 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:23,618 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 17:28:23,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 17:28:23,619 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:23,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:23,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1223648239, now seen corresponding path program 1 times [2022-10-16 17:28:23,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:23,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514353383] [2022-10-16 17:28:23,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:23,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:23,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:23,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514353383] [2022-10-16 17:28:23,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514353383] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:23,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:23,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:28:23,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698628005] [2022-10-16 17:28:23,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:23,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:28:23,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:23,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:28:23,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:28:23,713 INFO L87 Difference]: Start difference. First operand 307 states and 423 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:23,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:23,871 INFO L93 Difference]: Finished difference Result 358 states and 468 transitions. [2022-10-16 17:28:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:28:23,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2022-10-16 17:28:23,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:23,874 INFO L225 Difference]: With dead ends: 358 [2022-10-16 17:28:23,875 INFO L226 Difference]: Without dead ends: 356 [2022-10-16 17:28:23,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:28:23,896 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 72 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:23,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 341 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:28:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-10-16 17:28:23,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 307. [2022-10-16 17:28:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 263 states have (on average 1.5095057034220531) internal successors, (397), 297 states have internal predecessors, (397), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 17:28:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 411 transitions. [2022-10-16 17:28:23,922 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 411 transitions. Word has length 35 [2022-10-16 17:28:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:23,922 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 411 transitions. [2022-10-16 17:28:23,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 411 transitions. [2022-10-16 17:28:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-16 17:28:23,924 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:23,924 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 17:28:23,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-16 17:28:23,924 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:23,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:23,925 INFO L85 PathProgramCache]: Analyzing trace with hash 373502376, now seen corresponding path program 1 times [2022-10-16 17:28:23,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:23,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956883062] [2022-10-16 17:28:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:23,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-16 17:28:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 17:28:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 17:28:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:24,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:24,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956883062] [2022-10-16 17:28:24,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956883062] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:24,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786913244] [2022-10-16 17:28:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:24,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:24,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:24,293 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 17:28:24,299 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 17:28:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:24,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:28:24,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:28:24,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:28:24,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786913244] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:24,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:24,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2022-10-16 17:28:24,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134181895] [2022-10-16 17:28:24,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:24,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 17:28:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:24,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 17:28:24,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:28:24,749 INFO L87 Difference]: Start difference. First operand 307 states and 411 transitions. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-16 17:28:26,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:28:29,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:28:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:29,715 INFO L93 Difference]: Finished difference Result 549 states and 689 transitions. [2022-10-16 17:28:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 17:28:29,716 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 35 [2022-10-16 17:28:29,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:29,719 INFO L225 Difference]: With dead ends: 549 [2022-10-16 17:28:29,719 INFO L226 Difference]: Without dead ends: 548 [2022-10-16 17:28:29,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-10-16 17:28:29,721 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 482 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:29,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 1698 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 396 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-10-16 17:28:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-10-16 17:28:29,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 190. [2022-10-16 17:28:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 150 states have (on average 1.5133333333333334) internal successors, (227), 183 states have internal predecessors, (227), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:29,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 235 transitions. [2022-10-16 17:28:29,749 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 235 transitions. Word has length 35 [2022-10-16 17:28:29,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:29,749 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 235 transitions. [2022-10-16 17:28:29,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-10-16 17:28:29,750 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 235 transitions. [2022-10-16 17:28:29,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 17:28:29,750 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:29,751 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 17:28:29,788 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 17:28:29,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:29,967 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:29,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:29,968 INFO L85 PathProgramCache]: Analyzing trace with hash 721610355, now seen corresponding path program 1 times [2022-10-16 17:28:29,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:29,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009975695] [2022-10-16 17:28:29,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:29,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:30,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:30,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009975695] [2022-10-16 17:28:30,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009975695] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:30,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:30,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 17:28:30,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715117055] [2022-10-16 17:28:30,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:30,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:28:30,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:30,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:28:30,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 17:28:30,164 INFO L87 Difference]: Start difference. First operand 190 states and 235 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:32,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:28:34,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:28:34,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:34,799 INFO L93 Difference]: Finished difference Result 483 states and 546 transitions. [2022-10-16 17:28:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 17:28:34,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2022-10-16 17:28:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:34,803 INFO L225 Difference]: With dead ends: 483 [2022-10-16 17:28:34,803 INFO L226 Difference]: Without dead ends: 385 [2022-10-16 17:28:34,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:28:34,804 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 317 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:34,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 925 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 221 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-10-16 17:28:34,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-10-16 17:28:34,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 152. [2022-10-16 17:28:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.4821428571428572) internal successors, (166), 145 states have internal predecessors, (166), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:34,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2022-10-16 17:28:34,828 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 36 [2022-10-16 17:28:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:34,829 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2022-10-16 17:28:34,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:34,829 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2022-10-16 17:28:34,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 17:28:34,830 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:34,830 INFO L195 NwaCegarLoop]: trace histogram [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 17:28:34,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-16 17:28:34,830 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:34,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:34,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1094843596, now seen corresponding path program 1 times [2022-10-16 17:28:34,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:34,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928165003] [2022-10-16 17:28:34,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:34,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:35,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:35,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928165003] [2022-10-16 17:28:35,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928165003] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:35,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624529657] [2022-10-16 17:28:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:35,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:35,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:35,018 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 17:28:35,042 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 17:28:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:28:35,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 17:28:35,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:28:35,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624529657] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:35,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:28:35,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2022-10-16 17:28:35,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355236348] [2022-10-16 17:28:35,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:35,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 17:28:35,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:35,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 17:28:35,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:28:35,183 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:35,252 INFO L93 Difference]: Finished difference Result 152 states and 174 transitions. [2022-10-16 17:28:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 17:28:35,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2022-10-16 17:28:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:35,254 INFO L225 Difference]: With dead ends: 152 [2022-10-16 17:28:35,254 INFO L226 Difference]: Without dead ends: 151 [2022-10-16 17:28:35,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:28:35,256 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 132 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:35,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 156 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:28:35,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-10-16 17:28:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2022-10-16 17:28:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 109 states have (on average 1.4770642201834863) internal successors, (161), 141 states have internal predecessors, (161), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:35,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 169 transitions. [2022-10-16 17:28:35,277 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 169 transitions. Word has length 37 [2022-10-16 17:28:35,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:35,278 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 169 transitions. [2022-10-16 17:28:35,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:35,278 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 169 transitions. [2022-10-16 17:28:35,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 17:28:35,279 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:35,279 INFO L195 NwaCegarLoop]: trace histogram [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 17:28:35,314 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 17:28:35,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:35,495 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:35,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:35,496 INFO L85 PathProgramCache]: Analyzing trace with hash -912433773, now seen corresponding path program 1 times [2022-10-16 17:28:35,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:35,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133984820] [2022-10-16 17:28:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:35,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:35,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:35,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133984820] [2022-10-16 17:28:35,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133984820] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:35,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:35,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 17:28:35,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336768865] [2022-10-16 17:28:35,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:35,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:28:35,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:35,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:28:35,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 17:28:35,700 INFO L87 Difference]: Start difference. First operand 148 states and 169 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:35,967 INFO L93 Difference]: Finished difference Result 209 states and 229 transitions. [2022-10-16 17:28:35,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 17:28:35,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2022-10-16 17:28:35,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:35,969 INFO L225 Difference]: With dead ends: 209 [2022-10-16 17:28:35,969 INFO L226 Difference]: Without dead ends: 166 [2022-10-16 17:28:35,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:28:35,970 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 85 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:35,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 449 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-10-16 17:28:35,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2022-10-16 17:28:35,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 110 states have (on average 1.4727272727272727) internal successors, (162), 142 states have internal predecessors, (162), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 170 transitions. [2022-10-16 17:28:35,990 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 170 transitions. Word has length 38 [2022-10-16 17:28:35,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:35,991 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 170 transitions. [2022-10-16 17:28:35,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 170 transitions. [2022-10-16 17:28:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-16 17:28:35,992 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:35,992 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-10-16 17:28:35,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-16 17:28:35,992 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:35,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:35,993 INFO L85 PathProgramCache]: Analyzing trace with hash 147255087, now seen corresponding path program 1 times [2022-10-16 17:28:35,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:35,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62885433] [2022-10-16 17:28:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:35,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:36,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:36,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:36,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:36,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62885433] [2022-10-16 17:28:36,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62885433] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247068261] [2022-10-16 17:28:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:36,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:36,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:36,205 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 17:28:36,224 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 17:28:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:36,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:28:36,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:36,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:36,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247068261] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:36,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:36,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 13 [2022-10-16 17:28:36,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873060609] [2022-10-16 17:28:36,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:36,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 17:28:36,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:36,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 17:28:36,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:28:36,437 INFO L87 Difference]: Start difference. First operand 149 states and 170 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:38,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:28:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:39,153 INFO L93 Difference]: Finished difference Result 469 states and 526 transitions. [2022-10-16 17:28:39,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-16 17:28:39,154 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2022-10-16 17:28:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:39,156 INFO L225 Difference]: With dead ends: 469 [2022-10-16 17:28:39,156 INFO L226 Difference]: Without dead ends: 371 [2022-10-16 17:28:39,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:28:39,158 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 581 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:39,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 889 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 327 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-10-16 17:28:39,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-10-16 17:28:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 149. [2022-10-16 17:28:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 110 states have (on average 1.4727272727272727) internal successors, (162), 142 states have internal predecessors, (162), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:39,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 170 transitions. [2022-10-16 17:28:39,178 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 170 transitions. Word has length 40 [2022-10-16 17:28:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:39,178 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 170 transitions. [2022-10-16 17:28:39,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 170 transitions. [2022-10-16 17:28:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 17:28:39,179 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:39,179 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-10-16 17:28:39,217 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 17:28:39,394 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,SelfDestructingSolverStorable14 [2022-10-16 17:28:39,395 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:39,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:39,396 INFO L85 PathProgramCache]: Analyzing trace with hash -654421658, now seen corresponding path program 1 times [2022-10-16 17:28:39,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:39,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755713055] [2022-10-16 17:28:39,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:39,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:39,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:39,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:39,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:39,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:39,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:39,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755713055] [2022-10-16 17:28:39,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755713055] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:39,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:39,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 17:28:39,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038976226] [2022-10-16 17:28:39,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:39,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:28:39,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:39,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:28:39,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 17:28:39,659 INFO L87 Difference]: Start difference. First operand 149 states and 170 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:39,936 INFO L93 Difference]: Finished difference Result 321 states and 364 transitions. [2022-10-16 17:28:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 17:28:39,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2022-10-16 17:28:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:39,940 INFO L225 Difference]: With dead ends: 321 [2022-10-16 17:28:39,940 INFO L226 Difference]: Without dead ends: 287 [2022-10-16 17:28:39,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:28:39,944 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 141 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:39,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 552 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-10-16 17:28:39,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 149. [2022-10-16 17:28:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 110 states have (on average 1.4636363636363636) internal successors, (161), 142 states have internal predecessors, (161), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:39,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 169 transitions. [2022-10-16 17:28:39,971 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 169 transitions. Word has length 42 [2022-10-16 17:28:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:39,971 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 169 transitions. [2022-10-16 17:28:39,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:39,972 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 169 transitions. [2022-10-16 17:28:39,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 17:28:39,973 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:39,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2022-10-16 17:28:39,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-16 17:28:39,973 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:39,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:39,974 INFO L85 PathProgramCache]: Analyzing trace with hash -543147541, now seen corresponding path program 2 times [2022-10-16 17:28:39,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:39,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078734098] [2022-10-16 17:28:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:39,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 17:28:40,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:40,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078734098] [2022-10-16 17:28:40,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078734098] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:40,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636860252] [2022-10-16 17:28:40,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:28:40,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:40,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:40,411 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 17:28:40,422 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 17:28:40,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:28:40,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:28:40,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-16 17:28:40,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:40,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-10-16 17:28:40,619 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 7 treesize of output 6 [2022-10-16 17:28:40,698 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-16 17:28:40,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-16 17:28:40,719 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_217 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_217) |c_#memory_int|)) is different from true [2022-10-16 17:28:40,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-10-16 17:28:40,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-10-16 17:28:40,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-10-16 17:28:40,824 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 29 treesize of output 23 [2022-10-16 17:28:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 2 not checked. [2022-10-16 17:28:40,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:41,068 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_upsweep_~left~0#1| Int) (v_ArrVal_219 (Array Int Int)) (|ULTIMATE.start_upsweep_~a#1.offset| Int) (|v_ULTIMATE.start_upsweep_~right~0#1_7| Int)) (< (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| v_ArrVal_219) |c_ULTIMATE.start_main_~a~0#1.base|))) (+ (select .cse0 (+ (* |v_ULTIMATE.start_upsweep_~right~0#1_7| 4) |ULTIMATE.start_upsweep_~a#1.offset|)) (select .cse0 (+ (* 4 |ULTIMATE.start_upsweep_~left~0#1|) |ULTIMATE.start_upsweep_~a#1.offset|)))) 2147483648)) is different from false [2022-10-16 17:28:41,113 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_upsweep_~left~0#1| Int) (v_ArrVal_219 (Array Int Int)) (|v_ULTIMATE.start_upsweep_~right~0#1_7| Int) (|ULTIMATE.start_upsweep_~a#1.offset| Int)) (< (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base| v_ArrVal_219) |c_ULTIMATE.start_main_~a~0#1.base|))) (+ (select .cse0 (+ (* 4 |ULTIMATE.start_upsweep_~left~0#1|) |ULTIMATE.start_upsweep_~a#1.offset|)) (select .cse0 (+ (* |v_ULTIMATE.start_upsweep_~right~0#1_7| 4) |ULTIMATE.start_upsweep_~a#1.offset|)))) 2147483648)) is different from false [2022-10-16 17:28:41,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636860252] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:41,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:28:41,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 15 [2022-10-16 17:28:41,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702898207] [2022-10-16 17:28:41,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:41,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:28:41,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:41,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:28:41,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=261, Unknown=3, NotChecked=102, Total=420 [2022-10-16 17:28:41,143 INFO L87 Difference]: Start difference. First operand 149 states and 169 transitions. Second operand has 16 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 17:28:41,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:41,469 INFO L93 Difference]: Finished difference Result 187 states and 208 transitions. [2022-10-16 17:28:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 17:28:41,469 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2022-10-16 17:28:41,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:41,471 INFO L225 Difference]: With dead ends: 187 [2022-10-16 17:28:41,471 INFO L226 Difference]: Without dead ends: 185 [2022-10-16 17:28:41,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=503, Unknown=3, NotChecked=144, Total=756 [2022-10-16 17:28:41,472 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 289 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:41,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 612 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 85 Invalid, 0 Unknown, 150 Unchecked, 0.1s Time] [2022-10-16 17:28:41,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-10-16 17:28:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 150. [2022-10-16 17:28:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 112 states have (on average 1.4017857142857142) internal successors, (157), 142 states have internal predecessors, (157), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2022-10-16 17:28:41,498 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 44 [2022-10-16 17:28:41,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:41,498 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2022-10-16 17:28:41,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 17:28:41,498 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2022-10-16 17:28:41,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-16 17:28:41,499 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:41,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-10-16 17:28:41,541 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 17:28:41,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 17:28:41,713 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash 341032153, now seen corresponding path program 1 times [2022-10-16 17:28:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:41,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270817940] [2022-10-16 17:28:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:41,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 17:28:41,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:41,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270817940] [2022-10-16 17:28:41,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270817940] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:41,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100929137] [2022-10-16 17:28:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:41,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:41,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:41,791 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 17:28:41,801 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 17:28:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:41,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 17:28:41,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:42,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:42,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100929137] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:42,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:42,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 16 [2022-10-16 17:28:42,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823267971] [2022-10-16 17:28:42,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:42,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:28:42,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:42,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:28:42,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:28:42,161 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:42,970 INFO L93 Difference]: Finished difference Result 321 states and 350 transitions. [2022-10-16 17:28:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 17:28:42,971 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2022-10-16 17:28:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:42,972 INFO L225 Difference]: With dead ends: 321 [2022-10-16 17:28:42,972 INFO L226 Difference]: Without dead ends: 237 [2022-10-16 17:28:42,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=205, Invalid=607, Unknown=0, NotChecked=0, Total=812 [2022-10-16 17:28:42,975 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 928 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:42,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 744 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:28:42,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-10-16 17:28:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 165. [2022-10-16 17:28:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 127 states have (on average 1.4015748031496063) internal successors, (178), 157 states have internal predecessors, (178), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:43,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 186 transitions. [2022-10-16 17:28:43,001 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 186 transitions. Word has length 45 [2022-10-16 17:28:43,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:43,002 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 186 transitions. [2022-10-16 17:28:43,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 186 transitions. [2022-10-16 17:28:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 17:28:43,003 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:43,003 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:43,052 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 17:28:43,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:43,219 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:43,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:43,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1996276921, now seen corresponding path program 2 times [2022-10-16 17:28:43,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:43,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104230607] [2022-10-16 17:28:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:43,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:43,453 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:43,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:43,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104230607] [2022-10-16 17:28:43,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104230607] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:43,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694731420] [2022-10-16 17:28:43,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:28:43,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:43,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:43,455 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 17:28:43,474 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 17:28:43,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 17:28:43,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:28:43,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:28:43,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-10-16 17:28:43,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:43,780 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-10-16 17:28:43,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694731420] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:43,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:43,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 15 [2022-10-16 17:28:43,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933060093] [2022-10-16 17:28:43,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:43,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:28:43,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:43,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:28:43,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:28:43,784 INFO L87 Difference]: Start difference. First operand 165 states and 186 transitions. Second operand has 16 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 17:28:44,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:44,302 INFO L93 Difference]: Finished difference Result 636 states and 720 transitions. [2022-10-16 17:28:44,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 17:28:44,303 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2022-10-16 17:28:44,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:44,306 INFO L225 Difference]: With dead ends: 636 [2022-10-16 17:28:44,307 INFO L226 Difference]: Without dead ends: 635 [2022-10-16 17:28:44,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-10-16 17:28:44,308 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 1406 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:44,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 823 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:28:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-10-16 17:28:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 154. [2022-10-16 17:28:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 117 states have (on average 1.4102564102564104) internal successors, (165), 146 states have internal predecessors, (165), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 173 transitions. [2022-10-16 17:28:44,337 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 173 transitions. Word has length 46 [2022-10-16 17:28:44,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:44,337 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 173 transitions. [2022-10-16 17:28:44,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 17:28:44,338 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 173 transitions. [2022-10-16 17:28:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 17:28:44,338 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:44,339 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:44,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 17:28:44,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:44,554 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:44,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:44,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1588583714, now seen corresponding path program 1 times [2022-10-16 17:28:44,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:44,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330669136] [2022-10-16 17:28:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:44,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:28:45,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:45,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330669136] [2022-10-16 17:28:45,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330669136] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:45,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173085804] [2022-10-16 17:28:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:45,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:45,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:45,414 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 17:28:45,416 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 17:28:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:45,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 50 conjunts are in the unsatisfiable core [2022-10-16 17:28:45,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:45,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-10-16 17:28:45,575 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 7 treesize of output 6 [2022-10-16 17:28:45,697 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-16 17:28:45,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-16 17:28:45,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-16 17:28:45,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2022-10-16 17:28:47,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2022-10-16 17:28:52,774 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 17 treesize of output 13 [2022-10-16 17:28:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 17:28:52,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:52,968 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_306 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_downsweep_~a#1.base| v_ArrVal_306) |c_ULTIMATE.start_main_~a0~0#1.base|) |c_ULTIMATE.start_main_~a0~0#1.offset|) 2147483648)) is different from false [2022-10-16 17:28:52,979 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_306 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_306) |c_ULTIMATE.start_main_~a0~0#1.base|) |c_ULTIMATE.start_main_~a0~0#1.offset|) 2147483648)) is different from false [2022-10-16 17:28:53,025 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_306 (Array Int Int)) (v_ArrVal_304 Int)) (let ((.cse0 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (or (not (<= v_ArrVal_304 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |c_ULTIMATE.start_main_~a0~0#1.offset| .cse0) v_ArrVal_304)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_306) |c_ULTIMATE.start_main_~a0~0#1.base|) |c_ULTIMATE.start_main_~a0~0#1.offset|) 2147483648)))) is different from false [2022-10-16 17:28:53,041 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_306 (Array Int Int)) (v_ArrVal_304 Int)) (or (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base|) |c_ULTIMATE.start_main_#t~malloc16#1.offset| v_ArrVal_304)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_306) |c_ULTIMATE.start_main_#t~malloc16#1.base|) |c_ULTIMATE.start_main_#t~malloc16#1.offset|) 2147483648) (not (<= v_ArrVal_304 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2022-10-16 17:28:53,087 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_306 (Array Int Int)) (v_ArrVal_304 Int)) (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= v_ArrVal_304 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base| (store .cse0 |c_ULTIMATE.start_main_#t~malloc16#1.offset| v_ArrVal_304)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_306) |c_ULTIMATE.start_main_#t~malloc16#1.base|) |c_ULTIMATE.start_main_#t~malloc16#1.offset|) 2147483648)))) is different from false [2022-10-16 17:28:53,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173085804] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:53,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:28:53,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2022-10-16 17:28:53,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778195700] [2022-10-16 17:28:53,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:53,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 17:28:53,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:53,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 17:28:53,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=829, Unknown=10, NotChecked=310, Total=1260 [2022-10-16 17:28:53,092 INFO L87 Difference]: Start difference. First operand 154 states and 173 transitions. Second operand has 28 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:28:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:57,748 INFO L93 Difference]: Finished difference Result 162 states and 181 transitions. [2022-10-16 17:28:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 17:28:57,748 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 46 [2022-10-16 17:28:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:57,750 INFO L225 Difference]: With dead ends: 162 [2022-10-16 17:28:57,750 INFO L226 Difference]: Without dead ends: 160 [2022-10-16 17:28:57,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=213, Invalid=1437, Unknown=10, NotChecked=410, Total=2070 [2022-10-16 17:28:57,752 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 47 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:57,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1485 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 245 Invalid, 0 Unknown, 75 Unchecked, 0.3s Time] [2022-10-16 17:28:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-10-16 17:28:57,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-10-16 17:28:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 123 states have (on average 1.3902439024390243) internal successors, (171), 152 states have internal predecessors, (171), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 179 transitions. [2022-10-16 17:28:57,778 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 179 transitions. Word has length 46 [2022-10-16 17:28:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:57,779 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 179 transitions. [2022-10-16 17:28:57,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:28:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 179 transitions. [2022-10-16 17:28:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-16 17:28:57,779 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:57,780 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:28:57,819 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 17:28:57,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:57,995 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:57,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash -747010198, now seen corresponding path program 1 times [2022-10-16 17:28:57,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:57,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918898605] [2022-10-16 17:28:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:57,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:58,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:58,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:58,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:58,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 17:28:58,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:58,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918898605] [2022-10-16 17:28:58,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918898605] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:28:58,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:28:58,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:28:58,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246083394] [2022-10-16 17:28:58,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:28:58,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:28:58,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:58,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:28:58,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:28:58,082 INFO L87 Difference]: Start difference. First operand 160 states and 179 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:58,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:28:58,190 INFO L93 Difference]: Finished difference Result 172 states and 191 transitions. [2022-10-16 17:28:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:28:58,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-10-16 17:28:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:28:58,192 INFO L225 Difference]: With dead ends: 172 [2022-10-16 17:28:58,192 INFO L226 Difference]: Without dead ends: 170 [2022-10-16 17:28:58,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 17:28:58,193 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 8 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:28:58,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 385 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:28:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-10-16 17:28:58,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2022-10-16 17:28:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 131 states have (on average 1.381679389312977) internal successors, (181), 160 states have internal predecessors, (181), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:28:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2022-10-16 17:28:58,219 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 49 [2022-10-16 17:28:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:28:58,220 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2022-10-16 17:28:58,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:28:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2022-10-16 17:28:58,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-16 17:28:58,221 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:28:58,221 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1] [2022-10-16 17:28:58,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-10-16 17:28:58,221 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:28:58,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:28:58,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1773277087, now seen corresponding path program 1 times [2022-10-16 17:28:58,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:28:58,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651953527] [2022-10-16 17:28:58,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:58,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:28:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:58,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:28:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:58,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:28:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:58,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:28:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:28:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 17:28:58,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:28:58,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651953527] [2022-10-16 17:28:58,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651953527] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:28:58,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830036988] [2022-10-16 17:28:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:28:58,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:28:58,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:28:58,487 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 17:28:58,489 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 17:28:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:28:58,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:28:58,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:28:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:58,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:28:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:28:58,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830036988] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:28:58,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:28:58,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-10-16 17:28:58,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820038934] [2022-10-16 17:28:58,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:28:58,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-16 17:28:58,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:28:58,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-16 17:28:58,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-10-16 17:28:58,970 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand has 20 states, 20 states have (on average 3.8) internal successors, (76), 19 states have internal predecessors, (76), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:01,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:29:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:02,293 INFO L93 Difference]: Finished difference Result 683 states and 796 transitions. [2022-10-16 17:29:02,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-16 17:29:02,295 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.8) internal successors, (76), 19 states have internal predecessors, (76), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2022-10-16 17:29:02,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:02,299 INFO L225 Difference]: With dead ends: 683 [2022-10-16 17:29:02,299 INFO L226 Difference]: Without dead ends: 574 [2022-10-16 17:29:02,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 95 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2022-10-16 17:29:02,301 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 1427 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:02,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 1141 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 580 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-10-16 17:29:02,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-10-16 17:29:02,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 189. [2022-10-16 17:29:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 152 states have (on average 1.3421052631578947) internal successors, (204), 181 states have internal predecessors, (204), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:29:02,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 212 transitions. [2022-10-16 17:29:02,334 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 212 transitions. Word has length 51 [2022-10-16 17:29:02,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:02,335 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 212 transitions. [2022-10-16 17:29:02,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.8) internal successors, (76), 19 states have internal predecessors, (76), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 212 transitions. [2022-10-16 17:29:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-16 17:29:02,335 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:02,336 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:02,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-10-16 17:29:02,544 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,SelfDestructingSolverStorable21 [2022-10-16 17:29:02,545 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:29:02,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:02,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1894682867, now seen corresponding path program 1 times [2022-10-16 17:29:02,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:02,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801188919] [2022-10-16 17:29:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:02,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:29:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:29:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:29:02,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:02,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801188919] [2022-10-16 17:29:02,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801188919] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:02,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006241005] [2022-10-16 17:29:02,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:02,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:02,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:02,955 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 17:29:02,971 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 17:29:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:03,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 17:29:03,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:29:03,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:29:03,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006241005] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:03,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:03,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 18 [2022-10-16 17:29:03,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684254562] [2022-10-16 17:29:03,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:03,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 17:29:03,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:03,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 17:29:03,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-10-16 17:29:03,417 INFO L87 Difference]: Start difference. First operand 189 states and 212 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:05,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:29:06,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:06,232 INFO L93 Difference]: Finished difference Result 384 states and 432 transitions. [2022-10-16 17:29:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-16 17:29:06,233 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2022-10-16 17:29:06,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:06,238 INFO L225 Difference]: With dead ends: 384 [2022-10-16 17:29:06,238 INFO L226 Difference]: Without dead ends: 334 [2022-10-16 17:29:06,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 104 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2022-10-16 17:29:06,240 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 154 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:06,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1971 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 492 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-10-16 17:29:06,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-10-16 17:29:06,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 174. [2022-10-16 17:29:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 166 states have internal predecessors, (188), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:29:06,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 196 transitions. [2022-10-16 17:29:06,275 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 196 transitions. Word has length 54 [2022-10-16 17:29:06,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:06,275 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 196 transitions. [2022-10-16 17:29:06,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:06,276 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 196 transitions. [2022-10-16 17:29:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-16 17:29:06,276 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:06,276 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2022-10-16 17:29:06,314 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 17:29:06,491 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,SelfDestructingSolverStorable22 [2022-10-16 17:29:06,492 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:29:06,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:06,492 INFO L85 PathProgramCache]: Analyzing trace with hash 773314597, now seen corresponding path program 2 times [2022-10-16 17:29:06,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:06,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001083347] [2022-10-16 17:29:06,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:06,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:29:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:29:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 17:29:06,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:06,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001083347] [2022-10-16 17:29:06,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001083347] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:06,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514495999] [2022-10-16 17:29:06,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:29:06,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:06,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:06,614 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 17:29:06,640 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 17:29:06,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 17:29:06,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:29:06,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:29:06,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-16 17:29:06,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-16 17:29:06,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514495999] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:06,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:06,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-10-16 17:29:06,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588329789] [2022-10-16 17:29:06,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:06,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 17:29:06,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:06,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 17:29:06,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:29:06,991 INFO L87 Difference]: Start difference. First operand 174 states and 196 transitions. Second operand has 11 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 17:29:07,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:07,475 INFO L93 Difference]: Finished difference Result 272 states and 301 transitions. [2022-10-16 17:29:07,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 17:29:07,476 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2022-10-16 17:29:07,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:07,478 INFO L225 Difference]: With dead ends: 272 [2022-10-16 17:29:07,478 INFO L226 Difference]: Without dead ends: 270 [2022-10-16 17:29:07,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:29:07,479 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 313 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:07,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 477 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:29:07,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-10-16 17:29:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 183. [2022-10-16 17:29:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 146 states have (on average 1.3493150684931507) internal successors, (197), 175 states have internal predecessors, (197), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:29:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 205 transitions. [2022-10-16 17:29:07,512 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 205 transitions. Word has length 55 [2022-10-16 17:29:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:07,512 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 205 transitions. [2022-10-16 17:29:07,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 17:29:07,513 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 205 transitions. [2022-10-16 17:29:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-16 17:29:07,513 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:07,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:07,556 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 17:29:07,716 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,SelfDestructingSolverStorable23 [2022-10-16 17:29:07,716 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:29:07,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:07,717 INFO L85 PathProgramCache]: Analyzing trace with hash -410099827, now seen corresponding path program 1 times [2022-10-16 17:29:07,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:07,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854100153] [2022-10-16 17:29:07,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:07,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:29:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:29:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-16 17:29:07,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:07,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854100153] [2022-10-16 17:29:07,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854100153] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:07,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361458874] [2022-10-16 17:29:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:07,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:07,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:07,870 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 17:29:07,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 17:29:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:07,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 17:29:07,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-16 17:29:08,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-16 17:29:08,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361458874] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:08,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:08,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2022-10-16 17:29:08,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698683678] [2022-10-16 17:29:08,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:08,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 17:29:08,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 17:29:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-10-16 17:29:08,137 INFO L87 Difference]: Start difference. First operand 183 states and 205 transitions. Second operand has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:08,901 INFO L93 Difference]: Finished difference Result 357 states and 388 transitions. [2022-10-16 17:29:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 17:29:08,902 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2022-10-16 17:29:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:08,904 INFO L225 Difference]: With dead ends: 357 [2022-10-16 17:29:08,904 INFO L226 Difference]: Without dead ends: 347 [2022-10-16 17:29:08,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-10-16 17:29:08,905 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 781 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:08,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 327 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:29:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-10-16 17:29:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 221. [2022-10-16 17:29:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 186 states have (on average 1.3279569892473118) internal successors, (247), 213 states have internal predecessors, (247), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:29:08,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 255 transitions. [2022-10-16 17:29:08,941 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 255 transitions. Word has length 58 [2022-10-16 17:29:08,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:08,942 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 255 transitions. [2022-10-16 17:29:08,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:08,942 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 255 transitions. [2022-10-16 17:29:08,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-16 17:29:08,943 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:08,943 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1] [2022-10-16 17:29:08,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:09,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-10-16 17:29:09,159 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:29:09,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:09,160 INFO L85 PathProgramCache]: Analyzing trace with hash -776738150, now seen corresponding path program 1 times [2022-10-16 17:29:09,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:09,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806953204] [2022-10-16 17:29:09,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:09,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:09,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:09,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:29:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:29:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-16 17:29:09,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:09,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806953204] [2022-10-16 17:29:09,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806953204] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:09,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186114195] [2022-10-16 17:29:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:09,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:09,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:09,264 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:09,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 17:29:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:09,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:29:09,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:29:09,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:29:09,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186114195] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:29:09,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:29:09,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 18 [2022-10-16 17:29:09,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368270599] [2022-10-16 17:29:09,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:29:09,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 17:29:09,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:09,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 17:29:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-10-16 17:29:09,798 INFO L87 Difference]: Start difference. First operand 221 states and 255 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 17 states have internal predecessors, (90), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:10,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:10,978 INFO L93 Difference]: Finished difference Result 514 states and 571 transitions. [2022-10-16 17:29:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 17:29:10,979 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 17 states have internal predecessors, (90), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2022-10-16 17:29:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:10,981 INFO L225 Difference]: With dead ends: 514 [2022-10-16 17:29:10,982 INFO L226 Difference]: Without dead ends: 391 [2022-10-16 17:29:10,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 111 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=342, Invalid=1298, Unknown=0, NotChecked=0, Total=1640 [2022-10-16 17:29:10,984 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 712 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:10,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1289 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 17:29:10,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-10-16 17:29:11,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 228. [2022-10-16 17:29:11,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 193 states have (on average 1.3160621761658031) internal successors, (254), 220 states have internal predecessors, (254), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:29:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 262 transitions. [2022-10-16 17:29:11,021 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 262 transitions. Word has length 61 [2022-10-16 17:29:11,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:11,021 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 262 transitions. [2022-10-16 17:29:11,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 17 states have internal predecessors, (90), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 262 transitions. [2022-10-16 17:29:11,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-16 17:29:11,022 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:11,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:11,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-10-16 17:29:11,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:11,236 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:29:11,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:11,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1287161577, now seen corresponding path program 1 times [2022-10-16 17:29:11,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:11,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363721118] [2022-10-16 17:29:11,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:11,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:29:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:29:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 17:29:11,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:11,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363721118] [2022-10-16 17:29:11,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363721118] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:29:11,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:29:11,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 17:29:11,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65889607] [2022-10-16 17:29:11,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:29:11,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 17:29:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 17:29:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 17:29:11,304 INFO L87 Difference]: Start difference. First operand 228 states and 262 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:11,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:11,418 INFO L93 Difference]: Finished difference Result 228 states and 262 transitions. [2022-10-16 17:29:11,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 17:29:11,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 62 [2022-10-16 17:29:11,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:11,420 INFO L225 Difference]: With dead ends: 228 [2022-10-16 17:29:11,420 INFO L226 Difference]: Without dead ends: 224 [2022-10-16 17:29:11,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 17:29:11,421 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 26 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:11,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 212 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:29:11,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-10-16 17:29:11,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2022-10-16 17:29:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 193 states have (on average 1.2746113989637307) internal successors, (246), 216 states have internal predecessors, (246), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:29:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 254 transitions. [2022-10-16 17:29:11,456 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 254 transitions. Word has length 62 [2022-10-16 17:29:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:11,456 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 254 transitions. [2022-10-16 17:29:11,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 254 transitions. [2022-10-16 17:29:11,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-16 17:29:11,457 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:11,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:11,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-10-16 17:29:11,458 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:29:11,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:11,458 INFO L85 PathProgramCache]: Analyzing trace with hash -379367477, now seen corresponding path program 1 times [2022-10-16 17:29:11,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:11,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852113779] [2022-10-16 17:29:11,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:11,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:29:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:29:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:29:11,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:11,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852113779] [2022-10-16 17:29:11,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852113779] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:11,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013265054] [2022-10-16 17:29:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:11,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:11,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:11,855 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:11,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 17:29:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:11,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:29:11,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-16 17:29:12,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:29:12,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013265054] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:29:12,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:29:12,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 14 [2022-10-16 17:29:12,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245644887] [2022-10-16 17:29:12,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:29:12,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 17:29:12,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:12,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 17:29:12,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-10-16 17:29:12,044 INFO L87 Difference]: Start difference. First operand 224 states and 254 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:12,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:12,307 INFO L93 Difference]: Finished difference Result 248 states and 281 transitions. [2022-10-16 17:29:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:29:12,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2022-10-16 17:29:12,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:12,309 INFO L225 Difference]: With dead ends: 248 [2022-10-16 17:29:12,309 INFO L226 Difference]: Without dead ends: 223 [2022-10-16 17:29:12,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-10-16 17:29:12,310 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 137 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:12,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 261 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:29:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-10-16 17:29:12,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2022-10-16 17:29:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 195 states have (on average 1.2512820512820513) internal successors, (244), 214 states have internal predecessors, (244), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:29:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 252 transitions. [2022-10-16 17:29:12,350 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 252 transitions. Word has length 65 [2022-10-16 17:29:12,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:12,350 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 252 transitions. [2022-10-16 17:29:12,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:12,351 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 252 transitions. [2022-10-16 17:29:12,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-16 17:29:12,352 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:12,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:12,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:12,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-10-16 17:29:12,566 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:29:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:12,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1651194555, now seen corresponding path program 1 times [2022-10-16 17:29:12,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:12,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757914512] [2022-10-16 17:29:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:12,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:29:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:29:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:29:12,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:12,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757914512] [2022-10-16 17:29:12,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757914512] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:12,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050100321] [2022-10-16 17:29:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:12,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:12,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:12,870 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:12,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 17:29:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:12,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 17:29:12,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 17:29:13,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:29:13,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050100321] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:29:13,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:29:13,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2022-10-16 17:29:13,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992938200] [2022-10-16 17:29:13,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:29:13,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 17:29:13,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:13,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 17:29:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-10-16 17:29:13,036 INFO L87 Difference]: Start difference. First operand 222 states and 252 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:13,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:13,167 INFO L93 Difference]: Finished difference Result 253 states and 292 transitions. [2022-10-16 17:29:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 17:29:13,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 66 [2022-10-16 17:29:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:13,169 INFO L225 Difference]: With dead ends: 253 [2022-10-16 17:29:13,169 INFO L226 Difference]: Without dead ends: 249 [2022-10-16 17:29:13,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-10-16 17:29:13,175 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 62 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:13,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 148 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:29:13,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-10-16 17:29:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 207. [2022-10-16 17:29:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 182 states have (on average 1.2197802197802199) internal successors, (222), 199 states have internal predecessors, (222), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:29:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 230 transitions. [2022-10-16 17:29:13,223 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 230 transitions. Word has length 66 [2022-10-16 17:29:13,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:13,224 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 230 transitions. [2022-10-16 17:29:13,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 230 transitions. [2022-10-16 17:29:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-16 17:29:13,225 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:13,225 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:29:13,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 17:29:13,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-10-16 17:29:13,439 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:29:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:13,440 INFO L85 PathProgramCache]: Analyzing trace with hash -352576187, now seen corresponding path program 1 times [2022-10-16 17:29:13,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:13,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141476856] [2022-10-16 17:29:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:13,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:29:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:29:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 17:29:13,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:13,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141476856] [2022-10-16 17:29:13,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141476856] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:29:13,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:29:13,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:29:13,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211207369] [2022-10-16 17:29:13,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:29:13,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:29:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:29:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:29:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:29:13,537 INFO L87 Difference]: Start difference. First operand 207 states and 230 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:13,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:29:13,695 INFO L93 Difference]: Finished difference Result 211 states and 234 transitions. [2022-10-16 17:29:13,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:29:13,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2022-10-16 17:29:13,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:29:13,698 INFO L225 Difference]: With dead ends: 211 [2022-10-16 17:29:13,699 INFO L226 Difference]: Without dead ends: 209 [2022-10-16 17:29:13,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 17:29:13,700 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 49 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:29:13,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 243 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:29:13,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-10-16 17:29:13,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2022-10-16 17:29:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 182 states have (on average 1.2087912087912087) internal successors, (220), 197 states have internal predecessors, (220), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:29:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 228 transitions. [2022-10-16 17:29:13,783 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 228 transitions. Word has length 67 [2022-10-16 17:29:13,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:29:13,784 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 228 transitions. [2022-10-16 17:29:13,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:29:13,784 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 228 transitions. [2022-10-16 17:29:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-16 17:29:13,785 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:29:13,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 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 17:29:13,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-10-16 17:29:13,785 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:29:13,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:29:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1955040253, now seen corresponding path program 1 times [2022-10-16 17:29:13,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:29:13,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470432497] [2022-10-16 17:29:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:13,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:29:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:29:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:29:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:29:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:29:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:29:16,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:29:16,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470432497] [2022-10-16 17:29:16,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470432497] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:29:16,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130037410] [2022-10-16 17:29:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:29:16,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:29:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:29:16,998 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:29:17,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 17:29:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:29:17,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 74 conjunts are in the unsatisfiable core [2022-10-16 17:29:17,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:29:17,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-10-16 17:29:17,242 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 7 treesize of output 6 [2022-10-16 17:29:17,429 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-16 17:29:17,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-16 17:29:17,509 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_582 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_582) |c_#memory_int|)) is different from true [2022-10-16 17:29:17,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-10-16 17:29:17,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-10-16 17:29:17,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-10-16 17:29:18,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 22 treesize of output 17 [2022-10-16 17:29:22,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 30 treesize of output 25 [2022-10-16 17:29:31,784 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 45 treesize of output 39 [2022-10-16 17:29:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2022-10-16 17:29:32,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:29:47,123 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_upsweep_~right~0#1_20| Int)) (or (not (<= (+ |c_ULTIMATE.start_upsweep_~space~0#1| |c_ULTIMATE.start_upsweep_~left~0#1|) |v_ULTIMATE.start_upsweep_~right~0#1_20|)) (forall ((|v_ULTIMATE.start_downsweep_~left~1#1_8| Int) (v_ArrVal_585 Int) (|v_ULTIMATE.start_downsweep_~space#1_43| Int) (|v_ULTIMATE.start_downsweep_~a#1.offset_10| Int)) (or (< (let ((.cse0 (store (select (store |c_#memory_int| |c_ULTIMATE.start_upsweep_~a#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_upsweep_~a#1.base|) (+ |c_ULTIMATE.start_upsweep_~a#1.offset| (* |v_ULTIMATE.start_upsweep_~right~0#1_20| 4)) v_ArrVal_585)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (- 4) (* |c_ULTIMATE.start_main_~n~0#1| 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10|) 0))) (+ (select .cse0 (+ (- 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10| (* 8 |v_ULTIMATE.start_downsweep_~space#1_43|))) (select .cse0 (+ (* |v_ULTIMATE.start_downsweep_~left~1#1_8| 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10|)))) 2147483648) (not (<= (+ |v_ULTIMATE.start_downsweep_~left~1#1_8| 1) |v_ULTIMATE.start_downsweep_~space#1_43|)) (< |c_ULTIMATE.start_main_~a~0#1.offset| |v_ULTIMATE.start_downsweep_~a#1.offset_10|) (not (< 0 |v_ULTIMATE.start_downsweep_~space#1_43|)) (not (<= |v_ULTIMATE.start_downsweep_~space#1_43| |c_ULTIMATE.start_upsweep_~space~0#1|)))))) is different from false [2022-10-16 17:29:59,792 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_upsweep_~a#1.offset_15| Int) (|v_ULTIMATE.start_downsweep_~left~1#1_8| Int) (v_ArrVal_585 Int) (|v_ULTIMATE.start_upsweep_~right~0#1_20| Int) (|v_ULTIMATE.start_downsweep_~space#1_43| Int) (|v_ULTIMATE.start_downsweep_~a#1.offset_10| Int)) (or (not (<= |v_ULTIMATE.start_downsweep_~space#1_43| 1)) (not (<= (+ |v_ULTIMATE.start_downsweep_~left~1#1_8| 1) |v_ULTIMATE.start_downsweep_~space#1_43|)) (< (let ((.cse0 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_upsweep_~a#1.offset_15| (* |v_ULTIMATE.start_upsweep_~right~0#1_20| 4)) v_ArrVal_585) (+ (- 4) (* |c_ULTIMATE.start_main_~n~0#1| 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10|) 0))) (+ (select .cse0 (+ (* |v_ULTIMATE.start_downsweep_~left~1#1_8| 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10|)) (select .cse0 (+ (- 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10| (* 8 |v_ULTIMATE.start_downsweep_~space#1_43|))))) 2147483648) (not (< 0 |v_ULTIMATE.start_downsweep_~space#1_43|)) (< |v_ULTIMATE.start_upsweep_~right~0#1_20| 1) (< |v_ULTIMATE.start_upsweep_~a#1.offset_15| |v_ULTIMATE.start_downsweep_~a#1.offset_10|))) is different from false [2022-10-16 17:30:10,864 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~n~0#1| Int)) (or (< (+ |c_ULTIMATE.start_main_~i~1#1| 1) |ULTIMATE.start_main_~n~0#1|) (forall ((|v_ULTIMATE.start_upsweep_~a#1.offset_15| Int) (|v_ULTIMATE.start_downsweep_~left~1#1_8| Int) (v_ArrVal_585 Int) (v_ArrVal_584 (Array Int Int)) (|v_ULTIMATE.start_upsweep_~right~0#1_20| Int) (|v_ULTIMATE.start_downsweep_~space#1_43| Int) (|v_ULTIMATE.start_downsweep_~a#1.offset_10| Int)) (or (not (<= |v_ULTIMATE.start_downsweep_~space#1_43| 1)) (not (<= (+ |v_ULTIMATE.start_downsweep_~left~1#1_8| 1) |v_ULTIMATE.start_downsweep_~space#1_43|)) (< (let ((.cse0 (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| v_ArrVal_584) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_upsweep_~a#1.offset_15| (* |v_ULTIMATE.start_upsweep_~right~0#1_20| 4)) v_ArrVal_585) (+ (- 4) (* |ULTIMATE.start_main_~n~0#1| 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10|) 0))) (+ (select .cse0 (+ (- 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10| (* 8 |v_ULTIMATE.start_downsweep_~space#1_43|))) (select .cse0 (+ (* |v_ULTIMATE.start_downsweep_~left~1#1_8| 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10|)))) 2147483648) (not (< 0 |v_ULTIMATE.start_downsweep_~space#1_43|)) (< |v_ULTIMATE.start_upsweep_~right~0#1_20| 1) (< |v_ULTIMATE.start_upsweep_~a#1.offset_15| |v_ULTIMATE.start_downsweep_~a#1.offset_10|))) (not (< |c_ULTIMATE.start_main_~i~1#1| |ULTIMATE.start_main_~n~0#1|)))) is different from false [2022-10-16 17:30:10,933 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_upsweep_~a#1.offset_15| Int) (|v_ULTIMATE.start_downsweep_~left~1#1_8| Int) (v_ArrVal_585 Int) (v_ArrVal_584 (Array Int Int)) (|v_ULTIMATE.start_upsweep_~right~0#1_20| Int) (|ULTIMATE.start_main_~n~0#1| Int) (|v_ULTIMATE.start_downsweep_~space#1_43| Int) (|v_ULTIMATE.start_downsweep_~a#1.offset_10| Int)) (or (not (<= |v_ULTIMATE.start_downsweep_~space#1_43| 1)) (not (<= (+ |v_ULTIMATE.start_downsweep_~left~1#1_8| 1) |v_ULTIMATE.start_downsweep_~space#1_43|)) (< (+ 2 |c_ULTIMATE.start_main_#t~post17#1|) |ULTIMATE.start_main_~n~0#1|) (< (let ((.cse0 (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| v_ArrVal_584) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_upsweep_~a#1.offset_15| (* |v_ULTIMATE.start_upsweep_~right~0#1_20| 4)) v_ArrVal_585) (+ (- 4) (* |ULTIMATE.start_main_~n~0#1| 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10|) 0))) (+ (select .cse0 (+ (- 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10| (* 8 |v_ULTIMATE.start_downsweep_~space#1_43|))) (select .cse0 (+ (* |v_ULTIMATE.start_downsweep_~left~1#1_8| 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10|)))) 2147483648) (not (< (+ |c_ULTIMATE.start_main_#t~post17#1| 1) |ULTIMATE.start_main_~n~0#1|)) (not (< 0 |v_ULTIMATE.start_downsweep_~space#1_43|)) (< |v_ULTIMATE.start_upsweep_~right~0#1_20| 1) (< |v_ULTIMATE.start_upsweep_~a#1.offset_15| |v_ULTIMATE.start_downsweep_~a#1.offset_10|))) is different from false [2022-10-16 17:30:11,054 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_upsweep_~a#1.offset_15| Int) (|v_ULTIMATE.start_downsweep_~left~1#1_8| Int) (v_ArrVal_585 Int) (v_ArrVal_584 (Array Int Int)) (|v_ULTIMATE.start_upsweep_~right~0#1_20| Int) (|ULTIMATE.start_main_~n~0#1| Int) (|v_ULTIMATE.start_downsweep_~space#1_43| Int) (|v_ULTIMATE.start_downsweep_~a#1.offset_10| Int)) (or (not (<= |v_ULTIMATE.start_downsweep_~space#1_43| 1)) (not (< (+ |c_ULTIMATE.start_main_~i~1#1| 1) |ULTIMATE.start_main_~n~0#1|)) (not (<= (+ |v_ULTIMATE.start_downsweep_~left~1#1_8| 1) |v_ULTIMATE.start_downsweep_~space#1_43|)) (< (let ((.cse0 (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| v_ArrVal_584) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_upsweep_~a#1.offset_15| (* |v_ULTIMATE.start_upsweep_~right~0#1_20| 4)) v_ArrVal_585) (+ (- 4) (* |ULTIMATE.start_main_~n~0#1| 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10|) 0))) (+ (select .cse0 (+ (- 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10| (* 8 |v_ULTIMATE.start_downsweep_~space#1_43|))) (select .cse0 (+ (* |v_ULTIMATE.start_downsweep_~left~1#1_8| 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10|)))) 2147483648) (< (+ |c_ULTIMATE.start_main_~i~1#1| 2) |ULTIMATE.start_main_~n~0#1|) (not (< 0 |v_ULTIMATE.start_downsweep_~space#1_43|)) (< |v_ULTIMATE.start_upsweep_~right~0#1_20| 1) (< |v_ULTIMATE.start_upsweep_~a#1.offset_15| |v_ULTIMATE.start_downsweep_~a#1.offset_10|))) is different from false [2022-10-16 17:30:11,173 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_upsweep_~a#1.offset_15| Int) (|v_ULTIMATE.start_downsweep_~left~1#1_8| Int) (v_ArrVal_585 Int) (v_ArrVal_584 (Array Int Int)) (|v_ULTIMATE.start_upsweep_~right~0#1_20| Int) (|ULTIMATE.start_main_~n~0#1| Int) (|v_ULTIMATE.start_downsweep_~space#1_43| Int) (|v_ULTIMATE.start_downsweep_~a#1.offset_10| Int)) (or (< (let ((.cse0 (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base| v_ArrVal_584) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |v_ULTIMATE.start_upsweep_~a#1.offset_15| (* |v_ULTIMATE.start_upsweep_~right~0#1_20| 4)) v_ArrVal_585) (+ (- 4) (* |ULTIMATE.start_main_~n~0#1| 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10|) 0))) (+ (select .cse0 (+ (- 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10| (* 8 |v_ULTIMATE.start_downsweep_~space#1_43|))) (select .cse0 (+ (* |v_ULTIMATE.start_downsweep_~left~1#1_8| 4) |v_ULTIMATE.start_downsweep_~a#1.offset_10|)))) 2147483648) (not (<= |v_ULTIMATE.start_downsweep_~space#1_43| 1)) (< 2 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |v_ULTIMATE.start_downsweep_~left~1#1_8| 1) |v_ULTIMATE.start_downsweep_~space#1_43|)) (not (< 0 |v_ULTIMATE.start_downsweep_~space#1_43|)) (< |v_ULTIMATE.start_upsweep_~right~0#1_20| 1) (< |v_ULTIMATE.start_upsweep_~a#1.offset_15| |v_ULTIMATE.start_downsweep_~a#1.offset_10|) (not (< 1 |ULTIMATE.start_main_~n~0#1|)))) is different from false [2022-10-16 17:30:11,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130037410] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:11,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:30:11,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27] total 55 [2022-10-16 17:30:11,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070701477] [2022-10-16 17:30:11,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:11,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-10-16 17:30:11,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:11,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-10-16 17:30:11,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=4378, Unknown=22, NotChecked=980, Total=5700 [2022-10-16 17:30:11,252 INFO L87 Difference]: Start difference. First operand 205 states and 228 transitions. Second operand has 56 states, 53 states have (on average 2.0377358490566038) internal successors, (108), 52 states have internal predecessors, (108), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:30:13,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:30:33,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:33,827 INFO L93 Difference]: Finished difference Result 260 states and 290 transitions. [2022-10-16 17:30:33,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 17:30:33,828 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.0377358490566038) internal successors, (108), 52 states have internal predecessors, (108), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 68 [2022-10-16 17:30:33,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:33,832 INFO L225 Difference]: With dead ends: 260 [2022-10-16 17:30:33,832 INFO L226 Difference]: Without dead ends: 258 [2022-10-16 17:30:33,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 71.6s TimeCoverageRelationStatistics Valid=659, Invalid=8467, Unknown=22, NotChecked=1358, Total=10506 [2022-10-16 17:30:33,837 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 207 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 790 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:33,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1387 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1705 Invalid, 1 Unknown, 790 Unchecked, 4.2s Time] [2022-10-16 17:30:33,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-10-16 17:30:33,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 224. [2022-10-16 17:30:33,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 201 states have (on average 1.199004975124378) internal successors, (241), 216 states have internal predecessors, (241), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:30:33,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 249 transitions. [2022-10-16 17:30:33,889 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 249 transitions. Word has length 68 [2022-10-16 17:30:33,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:33,889 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 249 transitions. [2022-10-16 17:30:33,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.0377358490566038) internal successors, (108), 52 states have internal predecessors, (108), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:30:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 249 transitions. [2022-10-16 17:30:33,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-16 17:30:33,891 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:33,891 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2022-10-16 17:30:33,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:34,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:34,106 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:30:34,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:34,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1973838677, now seen corresponding path program 1 times [2022-10-16 17:30:34,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:34,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336976389] [2022-10-16 17:30:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:34,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:30:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:30:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 17:30:34,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:34,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336976389] [2022-10-16 17:30:34,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336976389] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:34,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052741503] [2022-10-16 17:30:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:34,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:34,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:34,300 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:34,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 17:30:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:34,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 17:30:34,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:30:34,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 14 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:30:35,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052741503] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:35,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:35,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 14] total 26 [2022-10-16 17:30:35,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641726246] [2022-10-16 17:30:35,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:35,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 17:30:35,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:35,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 17:30:35,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:30:35,187 INFO L87 Difference]: Start difference. First operand 224 states and 249 transitions. Second operand has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 25 states have internal predecessors, (123), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:30:38,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:38,333 INFO L93 Difference]: Finished difference Result 920 states and 1035 transitions. [2022-10-16 17:30:38,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-10-16 17:30:38,334 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 25 states have internal predecessors, (123), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2022-10-16 17:30:38,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:38,339 INFO L225 Difference]: With dead ends: 920 [2022-10-16 17:30:38,339 INFO L226 Difference]: Without dead ends: 804 [2022-10-16 17:30:38,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1353 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=846, Invalid=3984, Unknown=0, NotChecked=0, Total=4830 [2022-10-16 17:30:38,342 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 2176 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:38,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 1461 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:30:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-10-16 17:30:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 364. [2022-10-16 17:30:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 341 states have (on average 1.1788856304985338) internal successors, (402), 356 states have internal predecessors, (402), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:30:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 410 transitions. [2022-10-16 17:30:38,433 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 410 transitions. Word has length 70 [2022-10-16 17:30:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:38,433 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 410 transitions. [2022-10-16 17:30:38,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 25 states have internal predecessors, (123), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:30:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 410 transitions. [2022-10-16 17:30:38,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-16 17:30:38,435 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:38,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 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 17:30:38,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:38,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:38,651 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:30:38,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:38,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1912318335, now seen corresponding path program 1 times [2022-10-16 17:30:38,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:38,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607410845] [2022-10-16 17:30:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:38,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:38,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:38,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:30:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:38,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:30:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-16 17:30:38,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:38,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607410845] [2022-10-16 17:30:38,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607410845] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:38,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180117644] [2022-10-16 17:30:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:38,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:38,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:38,868 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:38,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 17:30:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:38,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 17:30:38,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:30:39,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:30:39,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180117644] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:39,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:39,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 26 [2022-10-16 17:30:39,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090143707] [2022-10-16 17:30:39,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:39,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 17:30:39,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:39,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 17:30:39,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-10-16 17:30:39,931 INFO L87 Difference]: Start difference. First operand 364 states and 410 transitions. Second operand has 27 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:30:43,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:43,992 INFO L93 Difference]: Finished difference Result 894 states and 990 transitions. [2022-10-16 17:30:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-10-16 17:30:43,993 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 72 [2022-10-16 17:30:43,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:43,999 INFO L225 Difference]: With dead ends: 894 [2022-10-16 17:30:43,999 INFO L226 Difference]: Without dead ends: 893 [2022-10-16 17:30:44,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1008, Invalid=4542, Unknown=0, NotChecked=0, Total=5550 [2022-10-16 17:30:44,002 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 2596 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:44,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2596 Valid, 854 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 17:30:44,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-10-16 17:30:44,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 505. [2022-10-16 17:30:44,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 482 states have (on average 1.2261410788381744) internal successors, (591), 497 states have internal predecessors, (591), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:30:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 599 transitions. [2022-10-16 17:30:44,135 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 599 transitions. Word has length 72 [2022-10-16 17:30:44,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:44,135 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 599 transitions. [2022-10-16 17:30:44,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:30:44,136 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 599 transitions. [2022-10-16 17:30:44,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 17:30:44,137 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:44,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 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 17:30:44,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:44,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:44,351 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:30:44,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:44,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2093434984, now seen corresponding path program 1 times [2022-10-16 17:30:44,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:44,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591508853] [2022-10-16 17:30:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:44,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:30:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:30:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:30:44,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:44,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591508853] [2022-10-16 17:30:44,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591508853] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:44,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770689001] [2022-10-16 17:30:44,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:44,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:44,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:44,760 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:44,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 17:30:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:44,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 17:30:44,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:30:45,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:30:45,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770689001] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:45,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:45,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 18 [2022-10-16 17:30:45,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755786139] [2022-10-16 17:30:45,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:45,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 17:30:45,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:45,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 17:30:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-10-16 17:30:45,436 INFO L87 Difference]: Start difference. First operand 505 states and 599 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 17 states have internal predecessors, (81), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:30:47,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:30:48,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:48,851 INFO L93 Difference]: Finished difference Result 1077 states and 1281 transitions. [2022-10-16 17:30:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 17:30:48,851 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 17 states have internal predecessors, (81), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 73 [2022-10-16 17:30:48,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:48,856 INFO L225 Difference]: With dead ends: 1077 [2022-10-16 17:30:48,857 INFO L226 Difference]: Without dead ends: 1056 [2022-10-16 17:30:48,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 140 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=307, Invalid=1099, Unknown=0, NotChecked=0, Total=1406 [2022-10-16 17:30:48,858 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 429 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:48,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 752 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 634 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-10-16 17:30:48,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-10-16 17:30:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 514. [2022-10-16 17:30:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 491 states have (on average 1.219959266802444) internal successors, (599), 506 states have internal predecessors, (599), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:30:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 607 transitions. [2022-10-16 17:30:48,997 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 607 transitions. Word has length 73 [2022-10-16 17:30:48,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:48,998 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 607 transitions. [2022-10-16 17:30:48,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 17 states have internal predecessors, (81), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:30:48,998 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 607 transitions. [2022-10-16 17:30:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-16 17:30:48,999 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:49,000 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-10-16 17:30:49,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:49,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-10-16 17:30:49,213 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:30:49,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:49,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1651929268, now seen corresponding path program 1 times [2022-10-16 17:30:49,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:49,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242331244] [2022-10-16 17:30:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:49,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:30:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:49,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:49,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:30:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-16 17:30:49,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:49,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242331244] [2022-10-16 17:30:49,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242331244] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:49,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015229173] [2022-10-16 17:30:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:49,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:49,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:49,340 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:49,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 17:30:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:49,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:30:49,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-16 17:30:49,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:30:49,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015229173] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:30:49,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:30:49,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-10-16 17:30:49,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841013023] [2022-10-16 17:30:49,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:30:49,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:30:49,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:49,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:30:49,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:30:49,562 INFO L87 Difference]: Start difference. First operand 514 states and 607 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:30:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:49,782 INFO L93 Difference]: Finished difference Result 515 states and 607 transitions. [2022-10-16 17:30:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:30:49,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2022-10-16 17:30:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:49,786 INFO L225 Difference]: With dead ends: 515 [2022-10-16 17:30:49,786 INFO L226 Difference]: Without dead ends: 513 [2022-10-16 17:30:49,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:30:49,789 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 107 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:49,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 151 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:30:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-10-16 17:30:49,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 512. [2022-10-16 17:30:49,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 491 states have (on average 1.189409368635438) internal successors, (584), 504 states have internal predecessors, (584), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:30:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 592 transitions. [2022-10-16 17:30:49,939 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 592 transitions. Word has length 75 [2022-10-16 17:30:49,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:49,939 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 592 transitions. [2022-10-16 17:30:49,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:30:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 592 transitions. [2022-10-16 17:30:49,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-16 17:30:49,941 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:49,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 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 17:30:49,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:50,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-10-16 17:30:50,158 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:30:50,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:50,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1429133555, now seen corresponding path program 1 times [2022-10-16 17:30:50,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:50,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778700611] [2022-10-16 17:30:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:50,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:30:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:30:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:30:50,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:50,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778700611] [2022-10-16 17:30:50,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778700611] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:50,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380534] [2022-10-16 17:30:50,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:50,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:50,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:50,533 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:50,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 17:30:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:50,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:30:50,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:30:50,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:30:51,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380534] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:51,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:51,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 26 [2022-10-16 17:30:51,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310486667] [2022-10-16 17:30:51,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:51,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 17:30:51,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 17:30:51,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:30:51,276 INFO L87 Difference]: Start difference. First operand 512 states and 592 transitions. Second operand has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 25 states have internal predecessors, (131), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:30:53,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:30:56,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:56,286 INFO L93 Difference]: Finished difference Result 1409 states and 1602 transitions. [2022-10-16 17:30:56,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-16 17:30:56,287 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 25 states have internal predecessors, (131), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2022-10-16 17:30:56,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:56,293 INFO L225 Difference]: With dead ends: 1409 [2022-10-16 17:30:56,293 INFO L226 Difference]: Without dead ends: 1336 [2022-10-16 17:30:56,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 142 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1821 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1089, Invalid=5391, Unknown=0, NotChecked=0, Total=6480 [2022-10-16 17:30:56,296 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 1139 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 76 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:56,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1020 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 882 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-10-16 17:30:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2022-10-16 17:30:56,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 538. [2022-10-16 17:30:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 517 states have (on average 1.1876208897485494) internal successors, (614), 530 states have internal predecessors, (614), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:30:56,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 622 transitions. [2022-10-16 17:30:56,433 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 622 transitions. Word has length 75 [2022-10-16 17:30:56,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:56,433 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 622 transitions. [2022-10-16 17:30:56,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 25 states have internal predecessors, (131), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:30:56,434 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 622 transitions. [2022-10-16 17:30:56,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-16 17:30:56,435 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:56,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:30:56,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:56,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:56,649 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:30:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:56,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1538575211, now seen corresponding path program 1 times [2022-10-16 17:30:56,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:56,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674520069] [2022-10-16 17:30:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:56,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:30:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:56,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:56,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:30:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 17:30:56,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:56,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674520069] [2022-10-16 17:30:56,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674520069] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:56,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696695723] [2022-10-16 17:30:56,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:56,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:56,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:56,883 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:56,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 17:30:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:56,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 17:30:56,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:30:57,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:30:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:30:57,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696695723] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:30:57,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:30:57,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 20 [2022-10-16 17:30:57,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342458712] [2022-10-16 17:30:57,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:30:57,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-16 17:30:57,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:30:57,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-16 17:30:57,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-10-16 17:30:57,483 INFO L87 Difference]: Start difference. First operand 538 states and 622 transitions. Second operand has 20 states, 20 states have (on average 6.35) internal successors, (127), 19 states have internal predecessors, (127), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:30:58,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:30:58,749 INFO L93 Difference]: Finished difference Result 851 states and 974 transitions. [2022-10-16 17:30:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 17:30:58,750 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.35) internal successors, (127), 19 states have internal predecessors, (127), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2022-10-16 17:30:58,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:30:58,756 INFO L225 Difference]: With dead ends: 851 [2022-10-16 17:30:58,756 INFO L226 Difference]: Without dead ends: 782 [2022-10-16 17:30:58,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 142 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 17:30:58,758 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 830 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 17:30:58,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 666 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 17:30:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-10-16 17:30:58,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 570. [2022-10-16 17:30:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 549 states have (on average 1.1894353369763206) internal successors, (653), 562 states have internal predecessors, (653), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:30:58,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 661 transitions. [2022-10-16 17:30:58,911 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 661 transitions. Word has length 76 [2022-10-16 17:30:58,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:30:58,912 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 661 transitions. [2022-10-16 17:30:58,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.35) internal successors, (127), 19 states have internal predecessors, (127), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:30:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 661 transitions. [2022-10-16 17:30:58,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-10-16 17:30:58,914 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:30:58,914 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:30:58,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-16 17:30:59,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:59,129 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:30:59,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:30:59,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1850946247, now seen corresponding path program 2 times [2022-10-16 17:30:59,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:30:59,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133057087] [2022-10-16 17:30:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:30:59,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:30:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:59,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:30:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:59,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:30:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:59,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:30:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:59,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:30:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:30:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 17:30:59,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:30:59,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133057087] [2022-10-16 17:30:59,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133057087] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:30:59,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524414114] [2022-10-16 17:30:59,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:30:59,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:30:59,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:30:59,505 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:30:59,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 17:30:59,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:30:59,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:30:59,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 17:30:59,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:30:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 17:30:59,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 17:31:00,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524414114] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:31:00,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:31:00,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 17 [2022-10-16 17:31:00,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021534163] [2022-10-16 17:31:00,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:00,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 17:31:00,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:00,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 17:31:00,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-10-16 17:31:00,142 INFO L87 Difference]: Start difference. First operand 570 states and 661 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 16 states have internal predecessors, (101), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:01,638 INFO L93 Difference]: Finished difference Result 1200 states and 1369 transitions. [2022-10-16 17:31:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 17:31:01,639 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 16 states have internal predecessors, (101), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 81 [2022-10-16 17:31:01,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:01,642 INFO L225 Difference]: With dead ends: 1200 [2022-10-16 17:31:01,643 INFO L226 Difference]: Without dead ends: 1080 [2022-10-16 17:31:01,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 158 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=1019, Unknown=0, NotChecked=0, Total=1260 [2022-10-16 17:31:01,644 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 370 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:01,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1578 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 17:31:01,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2022-10-16 17:31:01,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 501. [2022-10-16 17:31:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 480 states have (on average 1.16875) internal successors, (561), 493 states have internal predecessors, (561), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:31:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 569 transitions. [2022-10-16 17:31:01,778 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 569 transitions. Word has length 81 [2022-10-16 17:31:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:01,778 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 569 transitions. [2022-10-16 17:31:01,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 16 states have internal predecessors, (101), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:01,778 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 569 transitions. [2022-10-16 17:31:01,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-10-16 17:31:01,780 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:01,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:31:01,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:01,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-10-16 17:31:01,995 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:31:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash -894326010, now seen corresponding path program 1 times [2022-10-16 17:31:01,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:01,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648475006] [2022-10-16 17:31:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:01,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:04,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:04,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:31:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:31:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:04,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:31:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 17:31:04,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:04,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648475006] [2022-10-16 17:31:04,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648475006] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:04,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526984483] [2022-10-16 17:31:04,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:04,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:04,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:04,201 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:04,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-16 17:31:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:04,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-16 17:31:04,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:04,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-10-16 17:31:04,374 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 7 treesize of output 6 [2022-10-16 17:31:04,459 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-16 17:31:04,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-16 17:31:04,514 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_880 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_880) |c_#memory_int|)) is different from true [2022-10-16 17:31:04,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-10-16 17:31:04,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-10-16 17:31:04,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-10-16 17:31:04,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2022-10-16 17:31:04,879 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 17:31:04,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-10-16 17:31:05,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-10-16 17:31:05,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-10-16 17:31:05,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-10-16 17:31:05,687 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 18 treesize of output 10 [2022-10-16 17:31:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2022-10-16 17:31:05,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:06,006 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_887 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_downsweep_~a#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_~a0~0#1.base|) |c_ULTIMATE.start_main_~a0~0#1.offset|) 2147483648)) is different from false [2022-10-16 17:31:06,058 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_887 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_~a0~0#1.base|) |c_ULTIMATE.start_main_~a0~0#1.offset|) 2147483648)) is different from false [2022-10-16 17:31:06,103 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_887 (Array Int Int)) (v_ArrVal_885 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_upsweep_~a#1.base| v_ArrVal_885) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_~a0~0#1.base|) |c_ULTIMATE.start_main_~a0~0#1.offset|) 2147483648)) is different from false [2022-10-16 17:31:06,166 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_887 (Array Int Int)) (v_ArrVal_883 Int)) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |c_ULTIMATE.start_main_~a0~0#1.offset| (* |c_ULTIMATE.start_main_~i~1#1| 4)) v_ArrVal_883)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_~a0~0#1.base|) |c_ULTIMATE.start_main_~a0~0#1.offset|) 2147483648)) is different from false [2022-10-16 17:31:06,183 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~1#1_65| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_#t~post17#1| 1) |v_ULTIMATE.start_main_~i~1#1_65|)) (forall ((v_ArrVal_887 (Array Int Int)) (v_ArrVal_883 Int)) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |c_ULTIMATE.start_main_~a0~0#1.offset| (* |v_ULTIMATE.start_main_~i~1#1_65| 4)) v_ArrVal_883)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_~a0~0#1.base|) |c_ULTIMATE.start_main_~a0~0#1.offset|) 2147483648)))) is different from false [2022-10-16 17:31:06,209 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_887 (Array Int Int)) (v_ArrVal_883 Int) (|v_ULTIMATE.start_main_~i~1#1_65| Int)) (or (< |v_ULTIMATE.start_main_~i~1#1_65| (+ |c_ULTIMATE.start_main_~i~1#1| 1)) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |c_ULTIMATE.start_main_~a0~0#1.offset| (* |v_ULTIMATE.start_main_~i~1#1_65| 4)) v_ArrVal_883)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_~a0~0#1.base|) |c_ULTIMATE.start_main_~a0~0#1.offset|) 2147483648))) is different from false [2022-10-16 17:31:06,231 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_887 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_883 Int) (v_ArrVal_882 Int) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~1#1_65| Int)) (let ((.cse0 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (or (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| .cse0) v_ArrVal_882) (+ |ULTIMATE.start_main_~a0~0#1.offset| (* |v_ULTIMATE.start_main_~i~1#1_65| 4)) v_ArrVal_883)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_~a0~0#1.base|) |ULTIMATE.start_main_~a0~0#1.offset|) 2147483648) (< |v_ULTIMATE.start_main_~i~1#1_65| (+ |c_ULTIMATE.start_main_~i~1#1| 1)) (not (<= v_ArrVal_882 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| .cse0))))))) is different from false [2022-10-16 17:31:06,255 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_887 (Array Int Int)) (v_ArrVal_883 Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_882 Int) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~1#1_65| Int)) (or (not (<= v_ArrVal_882 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |ULTIMATE.start_main_~a~0#1.offset|))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base|) |ULTIMATE.start_main_~a0~0#1.offset| v_ArrVal_882) (+ |ULTIMATE.start_main_~a0~0#1.offset| (* |v_ULTIMATE.start_main_~i~1#1_65| 4)) v_ArrVal_883)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_#t~malloc16#1.base|) |ULTIMATE.start_main_~a0~0#1.offset|) 2147483648) (< |v_ULTIMATE.start_main_~i~1#1_65| 1))) is different from false [2022-10-16 17:31:06,299 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_887 (Array Int Int)) (v_ArrVal_883 Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_882 Int) (v_ArrVal_890 (Array Int Int)) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~1#1_65| Int)) (or (not (<= v_ArrVal_882 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base| v_ArrVal_890) |c_ULTIMATE.start_main_~a~0#1.base|) |ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~1#1_65| 1) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base| (store (store v_ArrVal_890 |ULTIMATE.start_main_~a0~0#1.offset| v_ArrVal_882) (+ |ULTIMATE.start_main_~a0~0#1.offset| (* |v_ULTIMATE.start_main_~i~1#1_65| 4)) v_ArrVal_883)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_#t~malloc16#1.base|) |ULTIMATE.start_main_~a0~0#1.offset|) 2147483648))) is different from false [2022-10-16 17:31:06,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526984483] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:06,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:31:06,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2022-10-16 17:31:06,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130583922] [2022-10-16 17:31:06,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:06,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-16 17:31:06,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:06,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-16 17:31:06,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1190, Unknown=10, NotChecked=790, Total=2162 [2022-10-16 17:31:06,303 INFO L87 Difference]: Start difference. First operand 501 states and 569 transitions. Second operand has 35 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:31:08,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:08,645 INFO L93 Difference]: Finished difference Result 546 states and 616 transitions. [2022-10-16 17:31:08,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-16 17:31:08,646 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 82 [2022-10-16 17:31:08,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:08,648 INFO L225 Difference]: With dead ends: 546 [2022-10-16 17:31:08,648 INFO L226 Difference]: Without dead ends: 544 [2022-10-16 17:31:08,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=388, Invalid=2294, Unknown=10, NotChecked=1090, Total=3782 [2022-10-16 17:31:08,650 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 446 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 405 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:08,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 1368 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 418 Invalid, 0 Unknown, 405 Unchecked, 0.6s Time] [2022-10-16 17:31:08,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-10-16 17:31:08,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 515. [2022-10-16 17:31:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 494 states have (on average 1.165991902834008) internal successors, (576), 507 states have internal predecessors, (576), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:31:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 584 transitions. [2022-10-16 17:31:08,773 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 584 transitions. Word has length 82 [2022-10-16 17:31:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:08,774 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 584 transitions. [2022-10-16 17:31:08,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:31:08,774 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 584 transitions. [2022-10-16 17:31:08,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-16 17:31:08,775 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:08,775 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-10-16 17:31:08,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:08,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-10-16 17:31:08,989 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:31:08,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:08,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1576197356, now seen corresponding path program 2 times [2022-10-16 17:31:08,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:08,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863324254] [2022-10-16 17:31:08,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:08,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:09,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:31:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:09,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:31:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:09,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:31:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-16 17:31:09,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:09,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863324254] [2022-10-16 17:31:09,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863324254] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:09,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702993866] [2022-10-16 17:31:09,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:31:09,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:09,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:09,158 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:09,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-16 17:31:09,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:31:09,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:31:09,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 17:31:09,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-16 17:31:09,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-16 17:31:10,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702993866] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:31:10,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:31:10,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 14] total 32 [2022-10-16 17:31:10,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52730133] [2022-10-16 17:31:10,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:10,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-16 17:31:10,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:10,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-16 17:31:10,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-10-16 17:31:10,349 INFO L87 Difference]: Start difference. First operand 515 states and 584 transitions. Second operand has 33 states, 32 states have (on average 4.0625) internal successors, (130), 32 states have internal predecessors, (130), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:16,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:16,603 INFO L93 Difference]: Finished difference Result 2144 states and 2378 transitions. [2022-10-16 17:31:16,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-10-16 17:31:16,604 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 4.0625) internal successors, (130), 32 states have internal predecessors, (130), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 83 [2022-10-16 17:31:16,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:16,611 INFO L225 Difference]: With dead ends: 2144 [2022-10-16 17:31:16,611 INFO L226 Difference]: Without dead ends: 2139 [2022-10-16 17:31:16,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5869 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3276, Invalid=13754, Unknown=0, NotChecked=0, Total=17030 [2022-10-16 17:31:16,614 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 7506 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7506 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:16,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7506 Valid, 1369 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-16 17:31:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2022-10-16 17:31:16,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 643. [2022-10-16 17:31:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 622 states have (on average 1.139871382636656) internal successors, (709), 635 states have internal predecessors, (709), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:31:16,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 717 transitions. [2022-10-16 17:31:16,783 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 717 transitions. Word has length 83 [2022-10-16 17:31:16,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:16,783 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 717 transitions. [2022-10-16 17:31:16,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 4.0625) internal successors, (130), 32 states have internal predecessors, (130), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 717 transitions. [2022-10-16 17:31:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-16 17:31:16,785 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:16,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 17:31:16,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:16,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-10-16 17:31:16,999 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:31:17,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1846402334, now seen corresponding path program 1 times [2022-10-16 17:31:17,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:17,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147148766] [2022-10-16 17:31:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:17,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:17,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:17,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:31:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:17,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:31:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:31:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:31:17,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:17,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147148766] [2022-10-16 17:31:17,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147148766] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:17,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079054087] [2022-10-16 17:31:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:17,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:17,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:17,465 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:17,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-10-16 17:31:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:17,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 17:31:17,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:31:17,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:31:18,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079054087] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:31:18,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:31:18,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 25 [2022-10-16 17:31:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492646036] [2022-10-16 17:31:18,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:18,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-16 17:31:18,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:18,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-16 17:31:18,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-10-16 17:31:18,218 INFO L87 Difference]: Start difference. First operand 643 states and 717 transitions. Second operand has 25 states, 25 states have (on average 5.16) internal successors, (129), 24 states have internal predecessors, (129), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:20,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:31:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:22,602 INFO L93 Difference]: Finished difference Result 1435 states and 1585 transitions. [2022-10-16 17:31:22,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-16 17:31:22,603 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.16) internal successors, (129), 24 states have internal predecessors, (129), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 85 [2022-10-16 17:31:22,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:22,609 INFO L225 Difference]: With dead ends: 1435 [2022-10-16 17:31:22,609 INFO L226 Difference]: Without dead ends: 1392 [2022-10-16 17:31:22,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 162 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=661, Invalid=3245, Unknown=0, NotChecked=0, Total=3906 [2022-10-16 17:31:22,611 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 676 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:22,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1269 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-10-16 17:31:22,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2022-10-16 17:31:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 643. [2022-10-16 17:31:22,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 622 states have (on average 1.1366559485530547) internal successors, (707), 635 states have internal predecessors, (707), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:31:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 715 transitions. [2022-10-16 17:31:22,745 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 715 transitions. Word has length 85 [2022-10-16 17:31:22,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:22,745 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 715 transitions. [2022-10-16 17:31:22,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.16) internal successors, (129), 24 states have internal predecessors, (129), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 715 transitions. [2022-10-16 17:31:22,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-16 17:31:22,747 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:22,747 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-10-16 17:31:22,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:22,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:22,961 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:31:22,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:22,962 INFO L85 PathProgramCache]: Analyzing trace with hash -983886157, now seen corresponding path program 2 times [2022-10-16 17:31:22,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:22,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951743525] [2022-10-16 17:31:22,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:22,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:23,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:31:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:31:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:23,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:31:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 17:31:23,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:23,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951743525] [2022-10-16 17:31:23,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951743525] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:23,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208467114] [2022-10-16 17:31:23,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:31:23,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:23,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:23,517 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:23,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-10-16 17:31:23,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:31:23,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:31:23,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 17:31:23,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 17:31:23,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 17:31:24,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208467114] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:31:24,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:31:24,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 36 [2022-10-16 17:31:24,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756210451] [2022-10-16 17:31:24,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:24,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-10-16 17:31:24,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:24,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-10-16 17:31:24,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1119, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 17:31:24,483 INFO L87 Difference]: Start difference. First operand 643 states and 715 transitions. Second operand has 37 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 36 states have internal predecessors, (138), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:26,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:31:33,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:33,319 INFO L93 Difference]: Finished difference Result 3489 states and 3808 transitions. [2022-10-16 17:31:33,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-10-16 17:31:33,320 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 36 states have internal predecessors, (138), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 87 [2022-10-16 17:31:33,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:33,330 INFO L225 Difference]: With dead ends: 3489 [2022-10-16 17:31:33,330 INFO L226 Difference]: Without dead ends: 3488 [2022-10-16 17:31:33,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9549 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4363, Invalid=21397, Unknown=0, NotChecked=0, Total=25760 [2022-10-16 17:31:33,334 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 3293 mSDsluCounter, 2396 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 171 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3296 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:33,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3296 Valid, 2513 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1500 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-10-16 17:31:33,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2022-10-16 17:31:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 723. [2022-10-16 17:31:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 702 states have (on average 1.1296296296296295) internal successors, (793), 715 states have internal predecessors, (793), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:31:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 801 transitions. [2022-10-16 17:31:33,608 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 801 transitions. Word has length 87 [2022-10-16 17:31:33,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:33,609 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 801 transitions. [2022-10-16 17:31:33,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 36 states have internal predecessors, (138), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 801 transitions. [2022-10-16 17:31:33,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-10-16 17:31:33,611 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:33,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:31:33,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:33,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:33,824 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:31:33,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:33,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1139349745, now seen corresponding path program 1 times [2022-10-16 17:31:33,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:33,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603807808] [2022-10-16 17:31:33,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:33,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:31:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:31:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:31:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 17:31:34,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:34,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603807808] [2022-10-16 17:31:34,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603807808] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:34,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083258827] [2022-10-16 17:31:34,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:34,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:34,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:34,336 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:34,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-10-16 17:31:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:34,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 57 conjunts are in the unsatisfiable core [2022-10-16 17:31:34,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:34,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-10-16 17:31:34,541 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 7 treesize of output 6 [2022-10-16 17:31:34,635 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-16 17:31:34,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-16 17:31:34,679 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1057 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_1057) |c_#memory_int|)) is different from true [2022-10-16 17:31:34,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-10-16 17:31:34,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-10-16 17:31:34,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2022-10-16 17:31:34,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 9 [2022-10-16 17:31:35,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-10-16 17:31:35,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-10-16 17:31:35,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-10-16 17:31:35,737 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 24 treesize of output 12 [2022-10-16 17:31:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2022-10-16 17:31:35,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:36,356 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1063 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_downsweep_~a#1.base| v_ArrVal_1063) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |c_ULTIMATE.start_main_~a0~0#1.offset| 4)) 1)) is different from false [2022-10-16 17:31:36,411 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1063 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1063) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |c_ULTIMATE.start_main_~a0~0#1.offset| 4)) 1)) is different from false [2022-10-16 17:31:36,450 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1063 (Array Int Int)) (v_ArrVal_1061 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_upsweep_~a#1.base| v_ArrVal_1061) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1063) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |c_ULTIMATE.start_main_~a0~0#1.offset| 4)) 1)) is different from false [2022-10-16 17:31:36,510 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (v_ArrVal_1059 Int) (v_ArrVal_1063 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (or (not (<= v_ArrVal_1059 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| .cse0)))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| .cse0) v_ArrVal_1059)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1063) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| 4)) 1)))) is different from false [2022-10-16 17:31:36,533 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (v_ArrVal_1059 Int) (v_ArrVal_1063 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_#t~post17#1| 4))) (or (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| .cse0 4) v_ArrVal_1059)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1063) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| 4)) 1) (not (<= v_ArrVal_1059 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| .cse0 4))))))) is different from false [2022-10-16 17:31:36,560 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (v_ArrVal_1059 Int) (v_ArrVal_1063 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (or (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| 4 .cse0) v_ArrVal_1059)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1063) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| 4)) 1) (not (<= v_ArrVal_1059 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| 4 .cse0))))))) is different from false [2022-10-16 17:31:36,580 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_1058 (Array Int Int)) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (v_ArrVal_1059 Int) (v_ArrVal_1063 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (or (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store v_ArrVal_1058 (+ |ULTIMATE.start_main_~a0~0#1.offset| 4 .cse0) v_ArrVal_1059)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1063) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| 4)) 1) (not (<= v_ArrVal_1059 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| v_ArrVal_1058) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| 4 .cse0))))))) is different from false [2022-10-16 17:31:36,600 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_1058 (Array Int Int)) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (v_ArrVal_1059 Int) (v_ArrVal_1063 (Array Int Int))) (or (< (let ((.cse0 (+ |ULTIMATE.start_main_~a0~0#1.offset| 4))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base| (store v_ArrVal_1058 .cse0 v_ArrVal_1059)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1063) |c_ULTIMATE.start_main_#t~malloc16#1.base|) .cse0)) 1) (not (<= v_ArrVal_1059 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base| v_ArrVal_1058) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| 4)))))) is different from false [2022-10-16 17:31:36,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083258827] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:36,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:31:36,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22] total 32 [2022-10-16 17:31:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668816797] [2022-10-16 17:31:36,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:36,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-16 17:31:36,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-16 17:31:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1308, Unknown=9, NotChecked=720, Total=2162 [2022-10-16 17:31:36,639 INFO L87 Difference]: Start difference. First operand 723 states and 801 transitions. Second operand has 32 states, 31 states have (on average 4.774193548387097) internal successors, (148), 29 states have internal predecessors, (148), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-16 17:31:38,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 17:31:40,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 17:31:42,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:42,238 INFO L93 Difference]: Finished difference Result 812 states and 897 transitions. [2022-10-16 17:31:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-10-16 17:31:42,239 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.774193548387097) internal successors, (148), 29 states have internal predecessors, (148), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 90 [2022-10-16 17:31:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:42,242 INFO L225 Difference]: With dead ends: 812 [2022-10-16 17:31:42,242 INFO L226 Difference]: Without dead ends: 748 [2022-10-16 17:31:42,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 9 IntricatePredicates, 1 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=256, Invalid=2740, Unknown=10, NotChecked=1026, Total=4032 [2022-10-16 17:31:42,243 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 107 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 520 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:42,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 2230 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 424 Invalid, 2 Unknown, 520 Unchecked, 4.6s Time] [2022-10-16 17:31:42,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-10-16 17:31:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2022-10-16 17:31:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 724 states have (on average 1.12707182320442) internal successors, (816), 737 states have internal predecessors, (816), 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 17:31:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 830 transitions. [2022-10-16 17:31:42,481 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 830 transitions. Word has length 90 [2022-10-16 17:31:42,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:42,483 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 830 transitions. [2022-10-16 17:31:42,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.774193548387097) internal successors, (148), 29 states have internal predecessors, (148), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-16 17:31:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 830 transitions. [2022-10-16 17:31:42,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-16 17:31:42,486 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:42,486 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-10-16 17:31:42,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:42,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:42,701 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:31:42,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:42,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1652972405, now seen corresponding path program 1 times [2022-10-16 17:31:42,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:42,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891896379] [2022-10-16 17:31:42,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:42,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:43,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:43,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:31:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:31:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:31:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-10-16 17:31:43,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:43,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891896379] [2022-10-16 17:31:43,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891896379] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:43,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432746969] [2022-10-16 17:31:43,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:43,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:43,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:43,106 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:43,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-10-16 17:31:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:43,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 17:31:43,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 59 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 17:31:43,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 30 proven. 44 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 17:31:43,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432746969] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:31:43,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:31:43,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2022-10-16 17:31:43,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860322693] [2022-10-16 17:31:43,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:43,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 17:31:43,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:43,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 17:31:43,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:31:43,976 INFO L87 Difference]: Start difference. First operand 748 states and 830 transitions. Second operand has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 25 states have internal predecessors, (141), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:46,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:46,620 INFO L93 Difference]: Finished difference Result 1517 states and 1669 transitions. [2022-10-16 17:31:46,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-10-16 17:31:46,621 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 25 states have internal predecessors, (141), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 91 [2022-10-16 17:31:46,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:46,626 INFO L225 Difference]: With dead ends: 1517 [2022-10-16 17:31:46,626 INFO L226 Difference]: Without dead ends: 1388 [2022-10-16 17:31:46,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 173 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=775, Invalid=4337, Unknown=0, NotChecked=0, Total=5112 [2022-10-16 17:31:46,628 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1657 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:46,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 1278 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 17:31:46,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-10-16 17:31:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 693. [2022-10-16 17:31:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 669 states have (on average 1.1225710014947683) internal successors, (751), 682 states have internal predecessors, (751), 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 17:31:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 765 transitions. [2022-10-16 17:31:46,806 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 765 transitions. Word has length 91 [2022-10-16 17:31:46,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:46,807 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 765 transitions. [2022-10-16 17:31:46,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.423076923076923) internal successors, (141), 25 states have internal predecessors, (141), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:46,807 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 765 transitions. [2022-10-16 17:31:46,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-16 17:31:46,808 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:46,809 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:31:46,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:47,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-10-16 17:31:47,024 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:31:47,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1268604288, now seen corresponding path program 1 times [2022-10-16 17:31:47,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:47,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538049060] [2022-10-16 17:31:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:47,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:49,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-16 17:31:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:49,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 17:31:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:49,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 17:31:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 17:31:50,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:50,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538049060] [2022-10-16 17:31:50,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538049060] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:50,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918167403] [2022-10-16 17:31:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:50,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:50,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:50,088 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:50,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-10-16 17:31:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:50,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 57 conjunts are in the unsatisfiable core [2022-10-16 17:31:50,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:50,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-10-16 17:31:50,320 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 7 treesize of output 6 [2022-10-16 17:31:50,416 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-16 17:31:50,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-16 17:31:50,480 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1147 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_1147))) is different from true [2022-10-16 17:31:50,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-10-16 17:31:50,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-10-16 17:31:50,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2022-10-16 17:31:50,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 9 [2022-10-16 17:31:51,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2022-10-16 17:31:51,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-10-16 17:31:51,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-10-16 17:31:51,908 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 24 treesize of output 12 [2022-10-16 17:31:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 2 not checked. [2022-10-16 17:31:51,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:52,506 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1153 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_downsweep_~a#1.base| v_ArrVal_1153) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |c_ULTIMATE.start_main_~a0~0#1.offset| 4)) 1))) is different from false [2022-10-16 17:31:52,566 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1153 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1153) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |c_ULTIMATE.start_main_~a0~0#1.offset| 4)) 1))) is different from false [2022-10-16 17:31:52,604 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1153 (Array Int Int)) (v_ArrVal_1151 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_upsweep_~a#1.base| v_ArrVal_1151) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1153) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |c_ULTIMATE.start_main_~a0~0#1.offset| 4)) 1))) is different from false [2022-10-16 17:31:52,664 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1150 Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (v_ArrVal_1153 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (or (not (<= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| .cse0)) v_ArrVal_1150)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| .cse0) v_ArrVal_1150)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1153) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| 4)) 1))))) is different from false [2022-10-16 17:31:52,681 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1150 Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (v_ArrVal_1153 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_#t~post17#1| 4))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| .cse0 4) v_ArrVal_1150)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1153) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| 4)) 1)) (not (<= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| .cse0 4)) v_ArrVal_1150))))) is different from false [2022-10-16 17:31:52,708 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1150 Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (v_ArrVal_1153 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| 4 .cse0) v_ArrVal_1150)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1153) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| 4)) 1)) (not (<= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| 4 .cse0)) v_ArrVal_1150))))) is different from false [2022-10-16 17:31:52,726 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1150 Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_1148 (Array Int Int)) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (v_ArrVal_1153 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (or (not (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| v_ArrVal_1148) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| 4 .cse0)) v_ArrVal_1150)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a0~0#1.base| (store v_ArrVal_1148 (+ |ULTIMATE.start_main_~a0~0#1.offset| 4 .cse0) v_ArrVal_1150)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1153) |c_ULTIMATE.start_main_~a0~0#1.base|) (+ |ULTIMATE.start_main_~a0~0#1.offset| 4)) 1))))) is different from false [2022-10-16 17:31:52,742 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1150 Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_1148 (Array Int Int)) (|ULTIMATE.start_main_~a0~0#1.offset| Int) (v_ArrVal_1153 (Array Int Int))) (or (not (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base| v_ArrVal_1148) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| 4)) v_ArrVal_1150)) (< 0 (+ (let ((.cse0 (+ |ULTIMATE.start_main_~a0~0#1.offset| 4))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~malloc16#1.base| (store v_ArrVal_1148 .cse0 v_ArrVal_1150)) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1153) |c_ULTIMATE.start_main_#t~malloc16#1.base|) .cse0)) 1)))) is different from false [2022-10-16 17:31:52,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918167403] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:52,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:31:52,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 39 [2022-10-16 17:31:52,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562421947] [2022-10-16 17:31:52,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:52,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-10-16 17:31:52,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-10-16 17:31:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1813, Unknown=9, NotChecked=846, Total=2862 [2022-10-16 17:31:52,776 INFO L87 Difference]: Start difference. First operand 693 states and 765 transitions. Second operand has 40 states, 37 states have (on average 4.081081081081081) internal successors, (151), 36 states have internal predecessors, (151), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:31:55,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:55,865 INFO L93 Difference]: Finished difference Result 700 states and 772 transitions. [2022-10-16 17:31:55,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 17:31:55,866 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 4.081081081081081) internal successors, (151), 36 states have internal predecessors, (151), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 92 [2022-10-16 17:31:55,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:55,868 INFO L225 Difference]: With dead ends: 700 [2022-10-16 17:31:55,868 INFO L226 Difference]: Without dead ends: 699 [2022-10-16 17:31:55,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 141 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 9 IntricatePredicates, 1 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=413, Invalid=3396, Unknown=9, NotChecked=1152, Total=4970 [2022-10-16 17:31:55,869 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 192 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 451 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:55,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1551 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 418 Invalid, 0 Unknown, 451 Unchecked, 0.6s Time] [2022-10-16 17:31:55,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-10-16 17:31:56,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 694. [2022-10-16 17:31:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 670 states have (on average 1.1223880597014926) internal successors, (752), 683 states have internal predecessors, (752), 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 17:31:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 766 transitions. [2022-10-16 17:31:56,035 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 766 transitions. Word has length 92 [2022-10-16 17:31:56,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:56,036 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 766 transitions. [2022-10-16 17:31:56,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 4.081081081081081) internal successors, (151), 36 states have internal predecessors, (151), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 17:31:56,036 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 766 transitions. [2022-10-16 17:31:56,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-16 17:31:56,038 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:56,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:31:56,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-10-16 17:31:56,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:56,252 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:31:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:56,253 INFO L85 PathProgramCache]: Analyzing trace with hash 641997826, now seen corresponding path program 1 times [2022-10-16 17:31:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:56,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733323297] [2022-10-16 17:31:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:56,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:56,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:56,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-16 17:31:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:56,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 17:31:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:56,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 17:31:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 17:31:56,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:56,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733323297] [2022-10-16 17:31:56,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733323297] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:56,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691671667] [2022-10-16 17:31:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:56,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:56,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:56,403 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:56,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-10-16 17:31:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:56,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 17:31:56,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 17:31:56,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:31:56,688 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 17:31:56,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691671667] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:31:56,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:31:56,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-10-16 17:31:56,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829641598] [2022-10-16 17:31:56,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:31:56,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 17:31:56,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:56,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 17:31:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:31:56,690 INFO L87 Difference]: Start difference. First operand 694 states and 766 transitions. Second operand has 13 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:57,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:57,165 INFO L93 Difference]: Finished difference Result 730 states and 802 transitions. [2022-10-16 17:31:57,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 17:31:57,166 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 94 [2022-10-16 17:31:57,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:57,169 INFO L225 Difference]: With dead ends: 730 [2022-10-16 17:31:57,169 INFO L226 Difference]: Without dead ends: 729 [2022-10-16 17:31:57,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-10-16 17:31:57,170 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 34 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:57,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 570 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:31:57,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-10-16 17:31:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 717. [2022-10-16 17:31:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 693 states have (on average 1.12987012987013) internal successors, (783), 706 states have internal predecessors, (783), 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 17:31:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 797 transitions. [2022-10-16 17:31:57,417 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 797 transitions. Word has length 94 [2022-10-16 17:31:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:31:57,418 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 797 transitions. [2022-10-16 17:31:57,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 797 transitions. [2022-10-16 17:31:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-10-16 17:31:57,420 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:31:57,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1] [2022-10-16 17:31:57,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-10-16 17:31:57,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:57,635 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-10-16 17:31:57,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:31:57,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1572903666, now seen corresponding path program 1 times [2022-10-16 17:31:57,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:31:57,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113526144] [2022-10-16 17:31:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:57,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:31:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:57,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:31:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:57,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-16 17:31:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 17:31:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 17:31:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 17:31:57,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:31:57,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113526144] [2022-10-16 17:31:57,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113526144] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:31:57,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246568457] [2022-10-16 17:31:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:31:57,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:31:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:31:57,786 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:31:57,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-10-16 17:31:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:31:57,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 17:31:57,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:31:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 17:31:57,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:31:57,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246568457] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:31:57,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:31:57,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-10-16 17:31:57,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039231174] [2022-10-16 17:31:57,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:31:57,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:31:57,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:31:57,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:31:57,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:31:57,976 INFO L87 Difference]: Start difference. First operand 717 states and 797 transitions. Second operand has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:31:58,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:31:58,179 INFO L93 Difference]: Finished difference Result 719 states and 797 transitions. [2022-10-16 17:31:58,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:31:58,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 95 [2022-10-16 17:31:58,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:31:58,183 INFO L225 Difference]: With dead ends: 719 [2022-10-16 17:31:58,183 INFO L226 Difference]: Without dead ends: 718 [2022-10-16 17:31:58,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:31:58,184 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 13 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:31:58,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 346 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:31:58,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states.