/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/array-examples/relax-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 20:09:49,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 20:09:49,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 20:09:49,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 20:09:49,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 20:09:49,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 20:09:49,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 20:09:49,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 20:09:49,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 20:09:49,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 20:09:49,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 20:09:49,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 20:09:49,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 20:09:49,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 20:09:49,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 20:09:49,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 20:09:49,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 20:09:49,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 20:09:49,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 20:09:49,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 20:09:49,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 20:09:49,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 20:09:49,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 20:09:49,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 20:09:49,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 20:09:49,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 20:09:49,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 20:09:49,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 20:09:49,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 20:09:49,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 20:09:49,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 20:09:49,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 20:09:49,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 20:09:49,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 20:09:49,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 20:09:49,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 20:09:49,249 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 [2022-10-15 20:09:49,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 20:09:49,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 20:09:49,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 20:09:49,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 20:09:49,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 20:09:49,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 20:09:49,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 20:09:49,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 20:09:49,319 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 20:09:49,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 20:09:49,320 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 20:09:49,320 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 20:09:49,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 20:09:49,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 20:09:49,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 20:09:49,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 20:09:49,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 20:09:49,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 20:09:49,321 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 20:09:49,321 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 20:09:49,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 20:09:49,322 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 20:09:49,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 20:09:49,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 20:09:49,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 20:09:49,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 20:09:49,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 20:09:49,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 20:09:49,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 20:09:49,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 20:09:49,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 20:09:49,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 20:09:49,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 20:09:49,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 20:09:49,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 20:09:49,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 20:09:49,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 20:09:49,828 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 20:09:49,829 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 20:09:49,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/relax-1.i [2022-10-15 20:09:49,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34fadb80f/52cfc6138ae74988a990eb9da869a052/FLAG77a6eaa4d [2022-10-15 20:09:50,659 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 20:09:50,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/relax-1.i [2022-10-15 20:09:50,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34fadb80f/52cfc6138ae74988a990eb9da869a052/FLAG77a6eaa4d [2022-10-15 20:09:50,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34fadb80f/52cfc6138ae74988a990eb9da869a052 [2022-10-15 20:09:50,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 20:09:50,944 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 20:09:50,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 20:09:50,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 20:09:50,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 20:09:50,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:09:50" (1/1) ... [2022-10-15 20:09:50,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bea914b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:50, skipping insertion in model container [2022-10-15 20:09:50,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:09:50" (1/1) ... [2022-10-15 20:09:50,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 20:09:51,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 20:09:51,242 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/array-examples/relax-1.i[983,996] [2022-10-15 20:09:51,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 20:09:51,469 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 20:09:51,491 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/array-examples/relax-1.i[983,996] [2022-10-15 20:09:51,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 20:09:51,634 INFO L208 MainTranslator]: Completed translation [2022-10-15 20:09:51,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51 WrapperNode [2022-10-15 20:09:51,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 20:09:51,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 20:09:51,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 20:09:51,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 20:09:51,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51" (1/1) ... [2022-10-15 20:09:51,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51" (1/1) ... [2022-10-15 20:09:51,704 INFO L138 Inliner]: procedures = 120, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 131 [2022-10-15 20:09:51,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 20:09:51,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 20:09:51,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 20:09:51,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 20:09:51,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51" (1/1) ... [2022-10-15 20:09:51,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51" (1/1) ... [2022-10-15 20:09:51,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51" (1/1) ... [2022-10-15 20:09:51,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51" (1/1) ... [2022-10-15 20:09:51,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51" (1/1) ... [2022-10-15 20:09:51,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51" (1/1) ... [2022-10-15 20:09:51,741 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51" (1/1) ... [2022-10-15 20:09:51,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51" (1/1) ... [2022-10-15 20:09:51,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 20:09:51,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 20:09:51,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 20:09:51,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 20:09:51,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51" (1/1) ... [2022-10-15 20:09:51,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 20:09:51,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:09:51,807 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) [2022-10-15 20:09:51,821 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 [2022-10-15 20:09:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 20:09:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-15 20:09:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-15 20:09:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 20:09:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 20:09:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 20:09:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 20:09:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 20:09:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 20:09:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 20:09:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 20:09:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 20:09:52,078 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 20:09:52,105 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 20:09:52,536 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 20:09:52,545 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 20:09:52,546 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 20:09:52,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:09:52 BoogieIcfgContainer [2022-10-15 20:09:52,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 20:09:52,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 20:09:52,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 20:09:52,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 20:09:52,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:09:50" (1/3) ... [2022-10-15 20:09:52,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782f3e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:09:52, skipping insertion in model container [2022-10-15 20:09:52,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:09:51" (2/3) ... [2022-10-15 20:09:52,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782f3e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:09:52, skipping insertion in model container [2022-10-15 20:09:52,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:09:52" (3/3) ... [2022-10-15 20:09:52,559 INFO L112 eAbstractionObserver]: Analyzing ICFG relax-1.i [2022-10-15 20:09:52,585 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 20:09:52,585 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-15 20:09:52,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 20:09:52,661 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;@28224a5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 20:09:52,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-10-15 20:09:52,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 57 states have internal predecessors, (76), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-15 20:09:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 20:09:52,678 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:52,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 20:09:52,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:52,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:52,687 INFO L85 PathProgramCache]: Analyzing trace with hash 28695941, now seen corresponding path program 1 times [2022-10-15 20:09:52,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:52,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117165059] [2022-10-15 20:09:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:52,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:53,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117165059] [2022-10-15 20:09:53,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117165059] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:09:53,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:09:53,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 20:09:53,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40571966] [2022-10-15 20:09:53,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:09:53,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 20:09:53,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:09:53,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 20:09:53,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 20:09:53,204 INFO L87 Difference]: Start difference. First operand has 64 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 57 states have internal predecessors, (76), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:53,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:09:53,363 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2022-10-15 20:09:53,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 20:09:53,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 20:09:53,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:09:53,378 INFO L225 Difference]: With dead ends: 165 [2022-10-15 20:09:53,379 INFO L226 Difference]: Without dead ends: 101 [2022-10-15 20:09:53,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 20:09:53,388 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 53 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:09:53,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 199 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:09:53,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-10-15 20:09:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 63. [2022-10-15 20:09:53,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 56 states have internal predecessors, (70), 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) [2022-10-15 20:09:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2022-10-15 20:09:53,450 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 5 [2022-10-15 20:09:53,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:09:53,451 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2022-10-15 20:09:53,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2022-10-15 20:09:53,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 20:09:53,454 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:53,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:09:53,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 20:09:53,455 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:53,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:53,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1357431346, now seen corresponding path program 1 times [2022-10-15 20:09:53,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:53,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119967284] [2022-10-15 20:09:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:53,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:53,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:53,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119967284] [2022-10-15 20:09:53,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119967284] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:09:53,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:09:53,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 20:09:53,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687915508] [2022-10-15 20:09:53,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:09:53,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:09:53,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:09:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:09:53,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:09:53,701 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:53,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:09:53,779 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2022-10-15 20:09:53,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:09:53,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 20:09:53,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:09:53,783 INFO L225 Difference]: With dead ends: 101 [2022-10-15 20:09:53,784 INFO L226 Difference]: Without dead ends: 99 [2022-10-15 20:09:53,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 20:09:53,787 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 42 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:09:53,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 273 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:09:53,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-10-15 20:09:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 66. [2022-10-15 20:09:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 50 states have (on average 1.46) internal successors, (73), 59 states have internal predecessors, (73), 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) [2022-10-15 20:09:53,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2022-10-15 20:09:53,805 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 9 [2022-10-15 20:09:53,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:09:53,806 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2022-10-15 20:09:53,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:53,806 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2022-10-15 20:09:53,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 20:09:53,807 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:53,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:09:53,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 20:09:53,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:53,809 INFO L85 PathProgramCache]: Analyzing trace with hash -96654733, now seen corresponding path program 1 times [2022-10-15 20:09:53,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:53,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163013336] [2022-10-15 20:09:53,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:53,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:54,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:54,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163013336] [2022-10-15 20:09:54,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163013336] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:09:54,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:09:54,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 20:09:54,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451852264] [2022-10-15 20:09:54,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:09:54,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:09:54,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:09:54,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:09:54,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:09:54,040 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:54,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:09:54,110 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2022-10-15 20:09:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:09:54,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 20:09:54,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:09:54,116 INFO L225 Difference]: With dead ends: 73 [2022-10-15 20:09:54,116 INFO L226 Difference]: Without dead ends: 71 [2022-10-15 20:09:54,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 20:09:54,121 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 4 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:09:54,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 194 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:09:54,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-15 20:09:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-10-15 20:09:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 64 states have internal predecessors, (79), 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) [2022-10-15 20:09:54,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2022-10-15 20:09:54,156 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 10 [2022-10-15 20:09:54,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:09:54,157 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2022-10-15 20:09:54,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:54,158 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2022-10-15 20:09:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 20:09:54,160 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:54,161 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:09:54,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 20:09:54,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:54,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:54,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2120201714, now seen corresponding path program 1 times [2022-10-15 20:09:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:54,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648595336] [2022-10-15 20:09:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:54,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:54,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:54,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:54,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648595336] [2022-10-15 20:09:54,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648595336] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:09:54,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886385128] [2022-10-15 20:09:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:54,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:54,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:09:54,415 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) [2022-10-15 20:09:54,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 20:09:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:54,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 20:09:54,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:09:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:54,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:09:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:54,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886385128] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:09:54,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:09:54,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-10-15 20:09:54,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807433435] [2022-10-15 20:09:54,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:09:54,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 20:09:54,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:09:54,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 20:09:54,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-10-15 20:09:54,909 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:55,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:09:55,301 INFO L93 Difference]: Finished difference Result 305 states and 386 transitions. [2022-10-15 20:09:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 20:09:55,302 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 20:09:55,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:09:55,304 INFO L225 Difference]: With dead ends: 305 [2022-10-15 20:09:55,305 INFO L226 Difference]: Without dead ends: 257 [2022-10-15 20:09:55,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2022-10-15 20:09:55,308 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 360 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 20:09:55,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 680 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 20:09:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-10-15 20:09:55,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 90. [2022-10-15 20:09:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 74 states have (on average 1.445945945945946) internal successors, (107), 83 states have internal predecessors, (107), 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) [2022-10-15 20:09:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 115 transitions. [2022-10-15 20:09:55,327 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 115 transitions. Word has length 12 [2022-10-15 20:09:55,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:09:55,328 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 115 transitions. [2022-10-15 20:09:55,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 115 transitions. [2022-10-15 20:09:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 20:09:55,330 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:55,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:09:55,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 20:09:55,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:55,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:55,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:55,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1301743743, now seen corresponding path program 1 times [2022-10-15 20:09:55,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:55,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10792966] [2022-10-15 20:09:55,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:55,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:55,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10792966] [2022-10-15 20:09:55,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10792966] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:09:55,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590285381] [2022-10-15 20:09:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:55,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:55,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:09:55,671 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) [2022-10-15 20:09:55,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 20:09:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:55,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 20:09:55,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:09:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:55,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:09:55,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590285381] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:09:55,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:09:55,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-10-15 20:09:55,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157427913] [2022-10-15 20:09:55,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:09:55,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 20:09:55,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:09:55,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 20:09:55,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-10-15 20:09:55,848 INFO L87 Difference]: Start difference. First operand 90 states and 115 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:09:56,013 INFO L93 Difference]: Finished difference Result 229 states and 291 transitions. [2022-10-15 20:09:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 20:09:56,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-15 20:09:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:09:56,016 INFO L225 Difference]: With dead ends: 229 [2022-10-15 20:09:56,017 INFO L226 Difference]: Without dead ends: 181 [2022-10-15 20:09:56,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-15 20:09:56,023 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 110 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:09:56,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 331 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:09:56,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-10-15 20:09:56,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 100. [2022-10-15 20:09:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 93 states have internal predecessors, (121), 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) [2022-10-15 20:09:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 129 transitions. [2022-10-15 20:09:56,067 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 129 transitions. Word has length 13 [2022-10-15 20:09:56,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:09:56,067 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 129 transitions. [2022-10-15 20:09:56,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 129 transitions. [2022-10-15 20:09:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 20:09:56,070 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:56,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:09:56,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 20:09:56,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:56,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:56,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:56,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1334270562, now seen corresponding path program 1 times [2022-10-15 20:09:56,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:56,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609782729] [2022-10-15 20:09:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:56,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609782729] [2022-10-15 20:09:56,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609782729] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:09:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281053536] [2022-10-15 20:09:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:56,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:56,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:09:56,402 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) [2022-10-15 20:09:56,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 20:09:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:56,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 20:09:56,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:09:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:56,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:09:56,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281053536] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:09:56,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:09:56,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-10-15 20:09:56,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632651642] [2022-10-15 20:09:56,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:09:56,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 20:09:56,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:09:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 20:09:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-15 20:09:56,596 INFO L87 Difference]: Start difference. First operand 100 states and 129 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:56,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:09:56,716 INFO L93 Difference]: Finished difference Result 177 states and 228 transitions. [2022-10-15 20:09:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 20:09:56,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 20:09:56,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:09:56,723 INFO L225 Difference]: With dead ends: 177 [2022-10-15 20:09:56,723 INFO L226 Difference]: Without dead ends: 175 [2022-10-15 20:09:56,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-10-15 20:09:56,725 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 158 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:09:56,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 317 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:09:56,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-10-15 20:09:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 98. [2022-10-15 20:09:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 84 states have (on average 1.3928571428571428) internal successors, (117), 91 states have internal predecessors, (117), 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) [2022-10-15 20:09:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 125 transitions. [2022-10-15 20:09:56,742 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 125 transitions. Word has length 14 [2022-10-15 20:09:56,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:09:56,742 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 125 transitions. [2022-10-15 20:09:56,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2022-10-15 20:09:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 20:09:56,747 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:56,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:09:56,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 20:09:56,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:56,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:56,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1550303468, now seen corresponding path program 1 times [2022-10-15 20:09:56,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:56,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836617178] [2022-10-15 20:09:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:56,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:57,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:57,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836617178] [2022-10-15 20:09:57,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836617178] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:09:57,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188614557] [2022-10-15 20:09:57,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:57,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:57,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:09:57,141 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) [2022-10-15 20:09:57,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 20:09:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:57,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 20:09:57,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:09:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:57,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:09:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:57,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188614557] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:09:57,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:09:57,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-15 20:09:57,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881210845] [2022-10-15 20:09:57,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:09:57,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 20:09:57,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:09:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 20:09:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-15 20:09:57,358 INFO L87 Difference]: Start difference. First operand 98 states and 125 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:57,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:09:57,522 INFO L93 Difference]: Finished difference Result 117 states and 149 transitions. [2022-10-15 20:09:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-15 20:09:57,523 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-15 20:09:57,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:09:57,528 INFO L225 Difference]: With dead ends: 117 [2022-10-15 20:09:57,536 INFO L226 Difference]: Without dead ends: 116 [2022-10-15 20:09:57,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-10-15 20:09:57,538 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 37 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:09:57,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 314 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:09:57,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-10-15 20:09:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2022-10-15 20:09:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 105 states have internal predecessors, (136), 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) [2022-10-15 20:09:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 144 transitions. [2022-10-15 20:09:57,571 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 144 transitions. Word has length 15 [2022-10-15 20:09:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:09:57,572 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 144 transitions. [2022-10-15 20:09:57,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 144 transitions. [2022-10-15 20:09:57,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 20:09:57,577 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:57,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:09:57,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 20:09:57,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:57,794 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:57,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:57,796 INFO L85 PathProgramCache]: Analyzing trace with hash 814767406, now seen corresponding path program 1 times [2022-10-15 20:09:57,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:57,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099930759] [2022-10-15 20:09:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:57,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:57,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:57,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099930759] [2022-10-15 20:09:57,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099930759] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:09:57,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511644424] [2022-10-15 20:09:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:57,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:57,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:09:57,947 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) [2022-10-15 20:09:57,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 20:09:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:58,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 20:09:58,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:09:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:58,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:09:58,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511644424] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:09:58,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:09:58,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-15 20:09:58,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106478393] [2022-10-15 20:09:58,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:09:58,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 20:09:58,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:09:58,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 20:09:58,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 20:09:58,082 INFO L87 Difference]: Start difference. First operand 112 states and 144 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:09:58,128 INFO L93 Difference]: Finished difference Result 112 states and 144 transitions. [2022-10-15 20:09:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 20:09:58,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-15 20:09:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:09:58,130 INFO L225 Difference]: With dead ends: 112 [2022-10-15 20:09:58,130 INFO L226 Difference]: Without dead ends: 111 [2022-10-15 20:09:58,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-15 20:09:58,133 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 9 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:09:58,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 245 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:09:58,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-10-15 20:09:58,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-10-15 20:09:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 98 states have (on average 1.3571428571428572) internal successors, (133), 104 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) [2022-10-15 20:09:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 141 transitions. [2022-10-15 20:09:58,143 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 141 transitions. Word has length 16 [2022-10-15 20:09:58,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:09:58,143 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 141 transitions. [2022-10-15 20:09:58,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 141 transitions. [2022-10-15 20:09:58,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-15 20:09:58,145 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:58,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:09:58,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 20:09:58,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:58,361 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:58,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:58,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1439024119, now seen corresponding path program 1 times [2022-10-15 20:09:58,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:58,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892388849] [2022-10-15 20:09:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:58,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-15 20:09:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:58,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:58,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892388849] [2022-10-15 20:09:58,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892388849] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:09:58,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:09:58,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 20:09:58,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708401109] [2022-10-15 20:09:58,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:09:58,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 20:09:58,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:09:58,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 20:09:58,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 20:09:58,427 INFO L87 Difference]: Start difference. First operand 111 states and 141 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 20:09:58,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:09:58,470 INFO L93 Difference]: Finished difference Result 151 states and 190 transitions. [2022-10-15 20:09:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 20:09:58,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-10-15 20:09:58,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:09:58,472 INFO L225 Difference]: With dead ends: 151 [2022-10-15 20:09:58,472 INFO L226 Difference]: Without dead ends: 124 [2022-10-15 20:09:58,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 20:09:58,474 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 9 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:09:58,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 115 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:09:58,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-10-15 20:09:58,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 115. [2022-10-15 20:09:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 102 states have (on average 1.3627450980392157) internal successors, (139), 108 states have internal predecessors, (139), 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) [2022-10-15 20:09:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 147 transitions. [2022-10-15 20:09:58,483 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 147 transitions. Word has length 18 [2022-10-15 20:09:58,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:09:58,484 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 147 transitions. [2022-10-15 20:09:58,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 20:09:58,484 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 147 transitions. [2022-10-15 20:09:58,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-15 20:09:58,485 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:58,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:09:58,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 20:09:58,486 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:58,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:58,487 INFO L85 PathProgramCache]: Analyzing trace with hash 668071584, now seen corresponding path program 1 times [2022-10-15 20:09:58,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:58,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955151545] [2022-10-15 20:09:58,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:58,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:58,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:58,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955151545] [2022-10-15 20:09:58,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955151545] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:09:58,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405679298] [2022-10-15 20:09:58,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:58,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:58,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:09:58,578 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) [2022-10-15 20:09:58,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 20:09:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:58,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 20:09:58,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:09:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:58,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:09:58,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:58,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405679298] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:09:58,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:09:58,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-15 20:09:58,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170272376] [2022-10-15 20:09:58,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:09:58,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 20:09:58,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:09:58,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 20:09:58,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-15 20:09:58,752 INFO L87 Difference]: Start difference. First operand 115 states and 147 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:09:58,932 INFO L93 Difference]: Finished difference Result 384 states and 501 transitions. [2022-10-15 20:09:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 20:09:58,933 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-10-15 20:09:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:09:58,936 INFO L225 Difference]: With dead ends: 384 [2022-10-15 20:09:58,936 INFO L226 Difference]: Without dead ends: 383 [2022-10-15 20:09:58,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-10-15 20:09:58,938 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 215 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:09:58,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 589 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:09:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-10-15 20:09:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 152. [2022-10-15 20:09:58,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 139 states have (on average 1.3597122302158273) internal successors, (189), 145 states have internal predecessors, (189), 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) [2022-10-15 20:09:58,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 197 transitions. [2022-10-15 20:09:58,953 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 197 transitions. Word has length 17 [2022-10-15 20:09:58,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:09:58,954 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 197 transitions. [2022-10-15 20:09:58,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:09:58,954 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 197 transitions. [2022-10-15 20:09:58,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-15 20:09:58,955 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:58,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:09:58,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 20:09:59,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:59,171 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:59,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:59,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1660082790, now seen corresponding path program 1 times [2022-10-15 20:09:59,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:59,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034647798] [2022-10-15 20:09:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:59,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:59,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-15 20:09:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:59,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:59,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034647798] [2022-10-15 20:09:59,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034647798] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:09:59,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:09:59,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 20:09:59,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39478547] [2022-10-15 20:09:59,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:09:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:09:59,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:09:59,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:09:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:09:59,247 INFO L87 Difference]: Start difference. First operand 152 states and 197 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 20:09:59,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:09:59,298 INFO L93 Difference]: Finished difference Result 189 states and 238 transitions. [2022-10-15 20:09:59,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:09:59,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-10-15 20:09:59,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:09:59,301 INFO L225 Difference]: With dead ends: 189 [2022-10-15 20:09:59,301 INFO L226 Difference]: Without dead ends: 161 [2022-10-15 20:09:59,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:09:59,303 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 23 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:09:59,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 117 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:09:59,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-10-15 20:09:59,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 151. [2022-10-15 20:09:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 138 states have (on average 1.3478260869565217) internal successors, (186), 144 states have internal predecessors, (186), 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) [2022-10-15 20:09:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 194 transitions. [2022-10-15 20:09:59,314 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 194 transitions. Word has length 19 [2022-10-15 20:09:59,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:09:59,315 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 194 transitions. [2022-10-15 20:09:59,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 20:09:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 194 transitions. [2022-10-15 20:09:59,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-15 20:09:59,316 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:59,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:09:59,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-15 20:09:59,317 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:59,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:59,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2113377705, now seen corresponding path program 1 times [2022-10-15 20:09:59,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:59,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331721306] [2022-10-15 20:09:59,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:59,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:59,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-15 20:09:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:59,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-15 20:09:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:59,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:59,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331721306] [2022-10-15 20:09:59,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331721306] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:09:59,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:09:59,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 20:09:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868752984] [2022-10-15 20:09:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:09:59,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:09:59,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:09:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:09:59,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:09:59,405 INFO L87 Difference]: Start difference. First operand 151 states and 194 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:09:59,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:09:59,459 INFO L93 Difference]: Finished difference Result 160 states and 205 transitions. [2022-10-15 20:09:59,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:09:59,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-10-15 20:09:59,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:09:59,461 INFO L225 Difference]: With dead ends: 160 [2022-10-15 20:09:59,462 INFO L226 Difference]: Without dead ends: 158 [2022-10-15 20:09:59,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 20:09:59,463 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 6 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:09:59,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 171 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:09:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-10-15 20:09:59,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2022-10-15 20:09:59,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 143 states have (on average 1.3356643356643356) internal successors, (191), 149 states have internal predecessors, (191), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 20:09:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 203 transitions. [2022-10-15 20:09:59,475 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 203 transitions. Word has length 23 [2022-10-15 20:09:59,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:09:59,476 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 203 transitions. [2022-10-15 20:09:59,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:09:59,476 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 203 transitions. [2022-10-15 20:09:59,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-15 20:09:59,478 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:09:59,478 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-10-15 20:09:59,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-15 20:09:59,478 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:09:59,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:09:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1599016594, now seen corresponding path program 2 times [2022-10-15 20:09:59,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:09:59,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161210261] [2022-10-15 20:09:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:09:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:09:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:09:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:59,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:09:59,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161210261] [2022-10-15 20:09:59,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161210261] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:09:59,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942423210] [2022-10-15 20:09:59,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 20:09:59,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:09:59,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:09:59,692 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) [2022-10-15 20:09:59,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 20:09:59,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 20:09:59,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:09:59,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 20:09:59,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:09:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:09:59,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:00,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942423210] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:00,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:00,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-10-15 20:10:00,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641340317] [2022-10-15 20:10:00,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:00,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-15 20:10:00,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:00,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-15 20:10:00,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2022-10-15 20:10:00,168 INFO L87 Difference]: Start difference. First operand 158 states and 203 transitions. Second operand has 23 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 23 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:00,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:00,884 INFO L93 Difference]: Finished difference Result 903 states and 1152 transitions. [2022-10-15 20:10:00,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-15 20:10:00,885 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 23 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-10-15 20:10:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:00,891 INFO L225 Difference]: With dead ends: 903 [2022-10-15 20:10:00,892 INFO L226 Difference]: Without dead ends: 833 [2022-10-15 20:10:00,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=796, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 20:10:00,894 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 766 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:00,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1498 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 20:10:00,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-10-15 20:10:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 186. [2022-10-15 20:10:00,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 171 states have (on average 1.3508771929824561) internal successors, (231), 177 states have internal predecessors, (231), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 20:10:00,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 243 transitions. [2022-10-15 20:10:00,928 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 243 transitions. Word has length 26 [2022-10-15 20:10:00,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:00,929 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 243 transitions. [2022-10-15 20:10:00,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 23 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:00,929 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 243 transitions. [2022-10-15 20:10:00,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-15 20:10:00,930 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:00,931 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 20:10:00,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:01,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:01,145 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:01,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:01,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1285441677, now seen corresponding path program 1 times [2022-10-15 20:10:01,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:01,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875842153] [2022-10-15 20:10:01,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:01,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:01,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-15 20:10:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-15 20:10:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:01,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:01,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875842153] [2022-10-15 20:10:01,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875842153] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:01,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785338244] [2022-10-15 20:10:01,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:01,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:01,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:01,254 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) [2022-10-15 20:10:01,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 20:10:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:01,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 20:10:01,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:01,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:01,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785338244] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:01,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:01,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-10-15 20:10:01,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184389014] [2022-10-15 20:10:01,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:01,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:10:01,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:01,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:10:01,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 20:10:01,352 INFO L87 Difference]: Start difference. First operand 186 states and 243 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 20:10:01,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:01,396 INFO L93 Difference]: Finished difference Result 186 states and 243 transitions. [2022-10-15 20:10:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:10:01,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-10-15 20:10:01,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:01,398 INFO L225 Difference]: With dead ends: 186 [2022-10-15 20:10:01,399 INFO L226 Difference]: Without dead ends: 185 [2022-10-15 20:10:01,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-15 20:10:01,400 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 13 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:01,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 146 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-10-15 20:10:01,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-10-15 20:10:01,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 171 states have (on average 1.345029239766082) internal successors, (230), 176 states have internal predecessors, (230), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 20:10:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 242 transitions. [2022-10-15 20:10:01,440 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 242 transitions. Word has length 29 [2022-10-15 20:10:01,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:01,440 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 242 transitions. [2022-10-15 20:10:01,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 20:10:01,441 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 242 transitions. [2022-10-15 20:10:01,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-15 20:10:01,444 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:01,444 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 20:10:01,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:01,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-15 20:10:01,659 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1193986206, now seen corresponding path program 1 times [2022-10-15 20:10:01,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:01,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676403684] [2022-10-15 20:10:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:01,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:01,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-15 20:10:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:01,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-15 20:10:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:01,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:01,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676403684] [2022-10-15 20:10:01,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676403684] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:01,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739024038] [2022-10-15 20:10:01,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:01,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:01,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:01,777 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) [2022-10-15 20:10:01,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 20:10:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:01,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 20:10:01,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:01,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:01,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739024038] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:01,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:01,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-10-15 20:10:01,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208980447] [2022-10-15 20:10:01,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:01,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 20:10:01,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:01,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 20:10:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 20:10:01,896 INFO L87 Difference]: Start difference. First operand 185 states and 242 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:01,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:01,972 INFO L93 Difference]: Finished difference Result 185 states and 242 transitions. [2022-10-15 20:10:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 20:10:01,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-10-15 20:10:01,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:01,975 INFO L225 Difference]: With dead ends: 185 [2022-10-15 20:10:01,975 INFO L226 Difference]: Without dead ends: 183 [2022-10-15 20:10:01,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-15 20:10:01,976 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 18 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:01,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 205 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:01,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-10-15 20:10:01,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2022-10-15 20:10:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 170 states have (on average 1.3352941176470587) internal successors, (227), 173 states have internal predecessors, (227), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 20:10:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 239 transitions. [2022-10-15 20:10:01,994 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 239 transitions. Word has length 30 [2022-10-15 20:10:01,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:01,994 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 239 transitions. [2022-10-15 20:10:01,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:01,995 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 239 transitions. [2022-10-15 20:10:01,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-15 20:10:01,996 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:01,996 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:02,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:02,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-15 20:10:02,211 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:02,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash -85104205, now seen corresponding path program 2 times [2022-10-15 20:10:02,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:02,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864963341] [2022-10-15 20:10:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:02,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:02,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:02,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864963341] [2022-10-15 20:10:02,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864963341] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:02,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005332768] [2022-10-15 20:10:02,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 20:10:02,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:02,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:02,496 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) [2022-10-15 20:10:02,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 20:10:02,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 20:10:02,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:10:02,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 20:10:02,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-15 20:10:02,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:02,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005332768] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:02,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:02,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-10-15 20:10:02,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841970719] [2022-10-15 20:10:02,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:02,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:10:02,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:02,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:10:02,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-10-15 20:10:02,618 INFO L87 Difference]: Start difference. First operand 182 states and 239 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:02,725 INFO L93 Difference]: Finished difference Result 239 states and 312 transitions. [2022-10-15 20:10:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:10:02,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-15 20:10:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:02,728 INFO L225 Difference]: With dead ends: 239 [2022-10-15 20:10:02,728 INFO L226 Difference]: Without dead ends: 213 [2022-10-15 20:10:02,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-10-15 20:10:02,731 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 89 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:02,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 112 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:10:02,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-10-15 20:10:02,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 184. [2022-10-15 20:10:02,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 172 states have (on average 1.3313953488372092) internal successors, (229), 175 states have internal predecessors, (229), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 20:10:02,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 241 transitions. [2022-10-15 20:10:02,754 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 241 transitions. Word has length 30 [2022-10-15 20:10:02,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:02,754 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 241 transitions. [2022-10-15 20:10:02,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:02,755 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 241 transitions. [2022-10-15 20:10:02,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-15 20:10:02,756 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:02,756 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] [2022-10-15 20:10:02,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:02,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-15 20:10:02,970 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:02,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash -428576851, now seen corresponding path program 1 times [2022-10-15 20:10:02,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:02,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743300955] [2022-10-15 20:10:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-15 20:10:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-15 20:10:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 20:10:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 20:10:03,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:03,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743300955] [2022-10-15 20:10:03,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743300955] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:03,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395950702] [2022-10-15 20:10:03,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:03,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:03,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:03,190 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) [2022-10-15 20:10:03,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 20:10:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:03,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 20:10:03,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 20:10:03,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 20:10:03,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395950702] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:03,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:03,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-15 20:10:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601485036] [2022-10-15 20:10:03,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:03,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 20:10:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 20:10:03,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-15 20:10:03,382 INFO L87 Difference]: Start difference. First operand 184 states and 241 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 20:10:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:03,583 INFO L93 Difference]: Finished difference Result 231 states and 305 transitions. [2022-10-15 20:10:03,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 20:10:03,583 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 34 [2022-10-15 20:10:03,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:03,585 INFO L225 Difference]: With dead ends: 231 [2022-10-15 20:10:03,585 INFO L226 Difference]: Without dead ends: 230 [2022-10-15 20:10:03,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-10-15 20:10:03,586 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 50 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:03,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 342 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:10:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-10-15 20:10:03,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2022-10-15 20:10:03,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 208 states have (on average 1.3028846153846154) internal successors, (271), 211 states have internal predecessors, (271), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-15 20:10:03,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 301 transitions. [2022-10-15 20:10:03,618 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 301 transitions. Word has length 34 [2022-10-15 20:10:03,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:03,619 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 301 transitions. [2022-10-15 20:10:03,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-15 20:10:03,619 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 301 transitions. [2022-10-15 20:10:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 20:10:03,620 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:03,620 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:03,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-10-15 20:10:03,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-15 20:10:03,836 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:03,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:03,837 INFO L85 PathProgramCache]: Analyzing trace with hash 145592402, now seen corresponding path program 1 times [2022-10-15 20:10:03,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:03,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361599419] [2022-10-15 20:10:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:03,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:04,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:04,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361599419] [2022-10-15 20:10:04,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361599419] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:04,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754113236] [2022-10-15 20:10:04,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:04,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:04,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:04,079 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) [2022-10-15 20:10:04,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 20:10:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:04,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 20:10:04,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:04,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:04,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754113236] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:04,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:04,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-10-15 20:10:04,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111224024] [2022-10-15 20:10:04,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:04,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-15 20:10:04,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:04,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-15 20:10:04,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-10-15 20:10:04,411 INFO L87 Difference]: Start difference. First operand 229 states and 301 transitions. Second operand has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:04,634 INFO L93 Difference]: Finished difference Result 261 states and 344 transitions. [2022-10-15 20:10:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-15 20:10:04,634 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-10-15 20:10:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:04,636 INFO L225 Difference]: With dead ends: 261 [2022-10-15 20:10:04,636 INFO L226 Difference]: Without dead ends: 260 [2022-10-15 20:10:04,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 20:10:04,638 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 66 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:04,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 473 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:10:04,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-10-15 20:10:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2022-10-15 20:10:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 238 states have (on average 1.2899159663865547) internal successors, (307), 241 states have internal predecessors, (307), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-15 20:10:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 337 transitions. [2022-10-15 20:10:04,691 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 337 transitions. Word has length 32 [2022-10-15 20:10:04,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:04,692 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 337 transitions. [2022-10-15 20:10:04,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 337 transitions. [2022-10-15 20:10:04,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-15 20:10:04,693 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:04,693 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-10-15 20:10:04,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:04,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-15 20:10:04,910 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:04,912 INFO L85 PathProgramCache]: Analyzing trace with hash -128306958, now seen corresponding path program 1 times [2022-10-15 20:10:04,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:04,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492457953] [2022-10-15 20:10:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:04,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:05,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:05,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492457953] [2022-10-15 20:10:05,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492457953] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:05,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306960] [2022-10-15 20:10:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:05,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:05,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:05,091 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) [2022-10-15 20:10:05,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-15 20:10:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:05,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 20:10:05,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:05,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:05,394 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:05,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306960] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:05,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:05,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-10-15 20:10:05,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436671705] [2022-10-15 20:10:05,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:05,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-15 20:10:05,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:05,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-15 20:10:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-10-15 20:10:05,398 INFO L87 Difference]: Start difference. First operand 259 states and 337 transitions. Second operand has 24 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:06,010 INFO L93 Difference]: Finished difference Result 1773 states and 2312 transitions. [2022-10-15 20:10:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-15 20:10:06,011 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-10-15 20:10:06,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:06,022 INFO L225 Difference]: With dead ends: 1773 [2022-10-15 20:10:06,022 INFO L226 Difference]: Without dead ends: 1772 [2022-10-15 20:10:06,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 20:10:06,024 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 669 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:06,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1169 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 20:10:06,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2022-10-15 20:10:06,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 425. [2022-10-15 20:10:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 404 states have (on average 1.316831683168317) internal successors, (532), 407 states have internal predecessors, (532), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-15 20:10:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 562 transitions. [2022-10-15 20:10:06,094 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 562 transitions. Word has length 37 [2022-10-15 20:10:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:06,095 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 562 transitions. [2022-10-15 20:10:06,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 562 transitions. [2022-10-15 20:10:06,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-15 20:10:06,098 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:06,098 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1] [2022-10-15 20:10:06,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:06,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:06,311 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:06,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2070874158, now seen corresponding path program 3 times [2022-10-15 20:10:06,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:06,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214882779] [2022-10-15 20:10:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:06,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:06,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:06,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214882779] [2022-10-15 20:10:06,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214882779] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:06,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073026369] [2022-10-15 20:10:06,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 20:10:06,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:06,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:06,859 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) [2022-10-15 20:10:06,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-15 20:10:06,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 20:10:06,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:10:06,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 20:10:06,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-10-15 20:10:07,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:07,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073026369] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:07,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:07,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 19 [2022-10-15 20:10:07,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359603247] [2022-10-15 20:10:07,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:07,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 20:10:07,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:07,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 20:10:07,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-10-15 20:10:07,065 INFO L87 Difference]: Start difference. First operand 425 states and 562 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:07,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:07,182 INFO L93 Difference]: Finished difference Result 499 states and 661 transitions. [2022-10-15 20:10:07,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:10:07,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-10-15 20:10:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:07,187 INFO L225 Difference]: With dead ends: 499 [2022-10-15 20:10:07,187 INFO L226 Difference]: Without dead ends: 498 [2022-10-15 20:10:07,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2022-10-15 20:10:07,189 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 77 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:07,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 154 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:07,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-10-15 20:10:07,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 310. [2022-10-15 20:10:07,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 290 states have (on average 1.2758620689655173) internal successors, (370), 292 states have internal predecessors, (370), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-15 20:10:07,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 400 transitions. [2022-10-15 20:10:07,235 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 400 transitions. Word has length 54 [2022-10-15 20:10:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:07,235 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 400 transitions. [2022-10-15 20:10:07,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 400 transitions. [2022-10-15 20:10:07,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-15 20:10:07,237 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:07,237 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:07,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:07,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:07,451 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:07,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:07,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1621417815, now seen corresponding path program 2 times [2022-10-15 20:10:07,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:07,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252933174] [2022-10-15 20:10:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:07,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:07,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-15 20:10:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:07,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-15 20:10:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:07,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 20:10:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-15 20:10:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:07,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 20:10:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-15 20:10:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-15 20:10:07,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:07,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252933174] [2022-10-15 20:10:07,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252933174] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:07,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14091156] [2022-10-15 20:10:07,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 20:10:07,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:07,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:07,943 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) [2022-10-15 20:10:07,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-15 20:10:08,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 20:10:08,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:10:08,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-15 20:10:08,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-10-15 20:10:08,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:08,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14091156] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:08,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:08,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2022-10-15 20:10:08,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528636638] [2022-10-15 20:10:08,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:08,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 20:10:08,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:08,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 20:10:08,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-10-15 20:10:08,141 INFO L87 Difference]: Start difference. First operand 310 states and 400 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:08,267 INFO L93 Difference]: Finished difference Result 392 states and 505 transitions. [2022-10-15 20:10:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 20:10:08,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2022-10-15 20:10:08,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:08,269 INFO L225 Difference]: With dead ends: 392 [2022-10-15 20:10:08,269 INFO L226 Difference]: Without dead ends: 308 [2022-10-15 20:10:08,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-10-15 20:10:08,273 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 50 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:08,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 189 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:10:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-10-15 20:10:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2022-10-15 20:10:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 288 states have (on average 1.2743055555555556) internal successors, (367), 290 states have internal predecessors, (367), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-15 20:10:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 397 transitions. [2022-10-15 20:10:08,333 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 397 transitions. Word has length 67 [2022-10-15 20:10:08,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:08,333 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 397 transitions. [2022-10-15 20:10:08,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 397 transitions. [2022-10-15 20:10:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-15 20:10:08,334 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:08,335 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:08,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:08,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:08,550 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:08,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:08,552 INFO L85 PathProgramCache]: Analyzing trace with hash 670536434, now seen corresponding path program 2 times [2022-10-15 20:10:08,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:08,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073792083] [2022-10-15 20:10:08,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:08,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:09,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:09,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073792083] [2022-10-15 20:10:09,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073792083] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:09,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071794056] [2022-10-15 20:10:09,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 20:10:09,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:09,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:09,243 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) [2022-10-15 20:10:09,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-15 20:10:09,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 20:10:09,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:10:09,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 20:10:09,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:09,377 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-10-15 20:10:09,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:09,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071794056] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:09,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:09,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [23] total 26 [2022-10-15 20:10:09,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112366636] [2022-10-15 20:10:09,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:09,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:10:09,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:09,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:10:09,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2022-10-15 20:10:09,380 INFO L87 Difference]: Start difference. First operand 308 states and 397 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:09,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:09,497 INFO L93 Difference]: Finished difference Result 440 states and 566 transitions. [2022-10-15 20:10:09,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:10:09,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-10-15 20:10:09,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:09,502 INFO L225 Difference]: With dead ends: 440 [2022-10-15 20:10:09,502 INFO L226 Difference]: Without dead ends: 384 [2022-10-15 20:10:09,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2022-10-15 20:10:09,504 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 20 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:09,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 180 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:09,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-10-15 20:10:09,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 310. [2022-10-15 20:10:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 290 states have (on average 1.2724137931034483) internal successors, (369), 292 states have internal predecessors, (369), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-15 20:10:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 399 transitions. [2022-10-15 20:10:09,551 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 399 transitions. Word has length 62 [2022-10-15 20:10:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:09,551 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 399 transitions. [2022-10-15 20:10:09,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:09,552 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 399 transitions. [2022-10-15 20:10:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-10-15 20:10:09,553 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:09,554 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:09,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:09,768 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,SelfDestructingSolverStorable21 [2022-10-15 20:10:09,768 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:09,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:09,769 INFO L85 PathProgramCache]: Analyzing trace with hash -550895254, now seen corresponding path program 1 times [2022-10-15 20:10:09,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:09,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349018101] [2022-10-15 20:10:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:09,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:10,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-15 20:10:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:10,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 20:10:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:10,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-15 20:10:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:10,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 20:10:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:10,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 20:10:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 20:10:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-15 20:10:10,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:10,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349018101] [2022-10-15 20:10:10,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349018101] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:10,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925923541] [2022-10-15 20:10:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:10,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:10,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:10,082 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) [2022-10-15 20:10:10,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-15 20:10:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:10,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 20:10:10,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-15 20:10:10,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-15 20:10:10,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925923541] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:10,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:10,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-10-15 20:10:10,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192184180] [2022-10-15 20:10:10,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:10,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-15 20:10:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:10,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-15 20:10:10,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-10-15 20:10:10,467 INFO L87 Difference]: Start difference. First operand 310 states and 399 transitions. Second operand has 24 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 24 states have internal predecessors, (82), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-10-15 20:10:10,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:10,919 INFO L93 Difference]: Finished difference Result 402 states and 526 transitions. [2022-10-15 20:10:10,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-15 20:10:10,920 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 24 states have internal predecessors, (82), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 69 [2022-10-15 20:10:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:10,922 INFO L225 Difference]: With dead ends: 402 [2022-10-15 20:10:10,923 INFO L226 Difference]: Without dead ends: 401 [2022-10-15 20:10:10,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 20:10:10,924 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 251 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:10,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 279 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 20:10:10,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-10-15 20:10:10,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 400. [2022-10-15 20:10:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 362 states have (on average 1.2513812154696133) internal successors, (453), 364 states have internal predecessors, (453), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-10-15 20:10:10,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 519 transitions. [2022-10-15 20:10:10,995 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 519 transitions. Word has length 69 [2022-10-15 20:10:10,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:10,995 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 519 transitions. [2022-10-15 20:10:10,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 24 states have internal predecessors, (82), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-10-15 20:10:10,996 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 519 transitions. [2022-10-15 20:10:10,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-15 20:10:10,998 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:10,998 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:11,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:11,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:11,211 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:11,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:11,212 INFO L85 PathProgramCache]: Analyzing trace with hash 73210118, now seen corresponding path program 1 times [2022-10-15 20:10:11,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:11,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760001769] [2022-10-15 20:10:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:11,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:12,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:12,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760001769] [2022-10-15 20:10:12,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760001769] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:12,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405695482] [2022-10-15 20:10:12,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:12,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:12,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:12,091 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) [2022-10-15 20:10:12,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-15 20:10:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:12,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-15 20:10:12,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:12,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:12,896 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:12,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405695482] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:12,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:12,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-10-15 20:10:12,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568458556] [2022-10-15 20:10:12,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:12,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-15 20:10:12,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:12,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-15 20:10:12,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-10-15 20:10:12,900 INFO L87 Difference]: Start difference. First operand 400 states and 519 transitions. Second operand has 48 states, 47 states have (on average 2.7872340425531914) internal successors, (131), 48 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:13,569 INFO L93 Difference]: Finished difference Result 462 states and 604 transitions. [2022-10-15 20:10:13,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-15 20:10:13,570 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.7872340425531914) internal successors, (131), 48 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-10-15 20:10:13,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:13,573 INFO L225 Difference]: With dead ends: 462 [2022-10-15 20:10:13,573 INFO L226 Difference]: Without dead ends: 461 [2022-10-15 20:10:13,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2022-10-15 20:10:13,577 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 213 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:13,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 426 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 20:10:13,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-10-15 20:10:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 460. [2022-10-15 20:10:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 422 states have (on average 1.2440758293838863) internal successors, (525), 424 states have internal predecessors, (525), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-10-15 20:10:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 591 transitions. [2022-10-15 20:10:13,645 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 591 transitions. Word has length 70 [2022-10-15 20:10:13,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:13,646 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 591 transitions. [2022-10-15 20:10:13,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.7872340425531914) internal successors, (131), 48 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:13,646 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 591 transitions. [2022-10-15 20:10:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-15 20:10:13,648 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:13,648 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1] [2022-10-15 20:10:13,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:13,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:13,852 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:13,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1737280274, now seen corresponding path program 2 times [2022-10-15 20:10:13,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:13,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921021346] [2022-10-15 20:10:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:13,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:14,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:14,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921021346] [2022-10-15 20:10:14,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921021346] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:14,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734635071] [2022-10-15 20:10:14,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 20:10:14,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:14,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:14,492 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) [2022-10-15 20:10:14,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-15 20:10:14,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 20:10:14,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:10:14,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-15 20:10:14,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:14,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:15,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734635071] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:15,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:15,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-10-15 20:10:15,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408744643] [2022-10-15 20:10:15,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:15,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-15 20:10:15,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:15,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-15 20:10:15,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-10-15 20:10:15,327 INFO L87 Difference]: Start difference. First operand 460 states and 591 transitions. Second operand has 48 states, 47 states have (on average 3.4893617021276597) internal successors, (164), 48 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:17,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:17,640 INFO L93 Difference]: Finished difference Result 6816 states and 8765 transitions. [2022-10-15 20:10:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-15 20:10:17,641 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.4893617021276597) internal successors, (164), 48 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-10-15 20:10:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:17,683 INFO L225 Difference]: With dead ends: 6816 [2022-10-15 20:10:17,683 INFO L226 Difference]: Without dead ends: 6815 [2022-10-15 20:10:17,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2022-10-15 20:10:17,688 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1397 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:17,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1867 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 20:10:17,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2022-10-15 20:10:17,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 640. [2022-10-15 20:10:17,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 602 states have (on average 1.2707641196013288) internal successors, (765), 604 states have internal predecessors, (765), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-10-15 20:10:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 831 transitions. [2022-10-15 20:10:17,916 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 831 transitions. Word has length 79 [2022-10-15 20:10:17,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:17,916 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 831 transitions. [2022-10-15 20:10:17,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.4893617021276597) internal successors, (164), 48 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:17,917 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 831 transitions. [2022-10-15 20:10:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-10-15 20:10:17,920 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:17,920 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:17,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:18,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:18,134 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:18,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1773481386, now seen corresponding path program 2 times [2022-10-15 20:10:18,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:18,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142662357] [2022-10-15 20:10:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:18,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-15 20:10:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 20:10:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-15 20:10:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 20:10:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 20:10:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 20:10:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-15 20:10:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-15 20:10:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-15 20:10:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-15 20:10:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-10-15 20:10:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-10-15 20:10:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-10-15 20:10:18,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:18,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142662357] [2022-10-15 20:10:18,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142662357] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:18,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815924729] [2022-10-15 20:10:18,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 20:10:18,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:18,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:18,982 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) [2022-10-15 20:10:18,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-15 20:10:19,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 20:10:19,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:10:19,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 20:10:19,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2022-10-15 20:10:19,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:19,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815924729] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:19,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:19,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [23] total 28 [2022-10-15 20:10:19,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551243842] [2022-10-15 20:10:19,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:19,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 20:10:19,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:19,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 20:10:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2022-10-15 20:10:19,412 INFO L87 Difference]: Start difference. First operand 640 states and 831 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 20:10:19,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:19,655 INFO L93 Difference]: Finished difference Result 817 states and 1061 transitions. [2022-10-15 20:10:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 20:10:19,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 135 [2022-10-15 20:10:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:19,660 INFO L225 Difference]: With dead ends: 817 [2022-10-15 20:10:19,660 INFO L226 Difference]: Without dead ends: 640 [2022-10-15 20:10:19,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2022-10-15 20:10:19,662 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 84 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:19,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 136 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:10:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-10-15 20:10:19,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2022-10-15 20:10:19,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 602 states have (on average 1.2691029900332227) internal successors, (764), 604 states have internal predecessors, (764), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-10-15 20:10:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 830 transitions. [2022-10-15 20:10:19,777 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 830 transitions. Word has length 135 [2022-10-15 20:10:19,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:19,777 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 830 transitions. [2022-10-15 20:10:19,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 20:10:19,778 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 830 transitions. [2022-10-15 20:10:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-10-15 20:10:19,780 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:19,780 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:19,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:19,993 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,SelfDestructingSolverStorable25 [2022-10-15 20:10:19,993 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:19,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:19,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1745379258, now seen corresponding path program 2 times [2022-10-15 20:10:19,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:19,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073885433] [2022-10-15 20:10:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:19,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:22,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:22,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073885433] [2022-10-15 20:10:22,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073885433] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:22,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881147021] [2022-10-15 20:10:22,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 20:10:22,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:22,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:22,300 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) [2022-10-15 20:10:22,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-15 20:10:22,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 20:10:22,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:10:22,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-15 20:10:22,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:22,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:24,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881147021] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:24,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:24,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2022-10-15 20:10:24,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399460670] [2022-10-15 20:10:24,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:24,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-15 20:10:24,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:24,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-15 20:10:24,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2022-10-15 20:10:24,956 INFO L87 Difference]: Start difference. First operand 640 states and 830 transitions. Second operand has 96 states, 95 states have (on average 2.642105263157895) internal successors, (251), 96 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:27,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:27,139 INFO L93 Difference]: Finished difference Result 762 states and 999 transitions. [2022-10-15 20:10:27,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-10-15 20:10:27,140 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.642105263157895) internal successors, (251), 96 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-10-15 20:10:27,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:27,144 INFO L225 Difference]: With dead ends: 762 [2022-10-15 20:10:27,144 INFO L226 Difference]: Without dead ends: 761 [2022-10-15 20:10:27,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4408 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5642, Invalid=14380, Unknown=0, NotChecked=0, Total=20022 [2022-10-15 20:10:27,152 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 585 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:27,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 639 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 20:10:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-10-15 20:10:27,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 760. [2022-10-15 20:10:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 722 states have (on average 1.257617728531856) internal successors, (908), 724 states have internal predecessors, (908), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-10-15 20:10:27,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 974 transitions. [2022-10-15 20:10:27,275 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 974 transitions. Word has length 130 [2022-10-15 20:10:27,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:27,276 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 974 transitions. [2022-10-15 20:10:27,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.642105263157895) internal successors, (251), 96 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 974 transitions. [2022-10-15 20:10:27,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-10-15 20:10:27,279 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:27,279 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:27,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:27,492 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,SelfDestructingSolverStorable26 [2022-10-15 20:10:27,492 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:27,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:27,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1674235607, now seen corresponding path program 1 times [2022-10-15 20:10:27,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:27,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015308944] [2022-10-15 20:10:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:27,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 20:10:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-15 20:10:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-15 20:10:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 20:10:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-15 20:10:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-15 20:10:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-15 20:10:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-15 20:10:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-15 20:10:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-15 20:10:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-10-15 20:10:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-10-15 20:10:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-10-15 20:10:28,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:28,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015308944] [2022-10-15 20:10:28,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015308944] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:28,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235571969] [2022-10-15 20:10:28,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:28,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:28,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:28,306 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) [2022-10-15 20:10:28,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-15 20:10:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:28,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-15 20:10:28,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-10-15 20:10:28,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-10-15 20:10:29,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235571969] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:29,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:29,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-10-15 20:10:29,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511254494] [2022-10-15 20:10:29,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:29,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-15 20:10:29,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:29,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-15 20:10:29,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-10-15 20:10:29,225 INFO L87 Difference]: Start difference. First operand 760 states and 974 transitions. Second operand has 48 states, 47 states have (on average 3.425531914893617) internal successors, (161), 48 states have internal predecessors, (161), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-10-15 20:10:30,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:30,336 INFO L93 Difference]: Finished difference Result 942 states and 1227 transitions. [2022-10-15 20:10:30,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-15 20:10:30,337 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.425531914893617) internal successors, (161), 48 states have internal predecessors, (161), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 142 [2022-10-15 20:10:30,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:30,346 INFO L225 Difference]: With dead ends: 942 [2022-10-15 20:10:30,346 INFO L226 Difference]: Without dead ends: 941 [2022-10-15 20:10:30,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2022-10-15 20:10:30,355 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 504 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:30,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 909 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 20:10:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-10-15 20:10:30,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 940. [2022-10-15 20:10:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 866 states have (on average 1.2424942263279446) internal successors, (1076), 868 states have internal predecessors, (1076), 69 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-10-15 20:10:30,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1214 transitions. [2022-10-15 20:10:30,523 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1214 transitions. Word has length 142 [2022-10-15 20:10:30,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:30,524 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1214 transitions. [2022-10-15 20:10:30,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.425531914893617) internal successors, (161), 48 states have internal predecessors, (161), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-10-15 20:10:30,524 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1214 transitions. [2022-10-15 20:10:30,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-10-15 20:10:30,528 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:30,528 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1] [2022-10-15 20:10:30,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:30,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-10-15 20:10:30,742 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 20:10:30,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:30,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1185679186, now seen corresponding path program 3 times [2022-10-15 20:10:30,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:30,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775885225] [2022-10-15 20:10:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:30,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:32,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:32,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775885225] [2022-10-15 20:10:32,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775885225] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:32,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119797799] [2022-10-15 20:10:32,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 20:10:32,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:32,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:32,596 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) [2022-10-15 20:10:32,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-15 20:10:33,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2022-10-15 20:10:33,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:10:33,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-15 20:10:33,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:33,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:36,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119797799] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:36,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:36,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2022-10-15 20:10:36,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535766911] [2022-10-15 20:10:36,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:36,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-15 20:10:36,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:36,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-15 20:10:36,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2022-10-15 20:10:36,025 INFO L87 Difference]: Start difference. First operand 940 states and 1214 transitions. Second operand has 96 states, 95 states have (on average 3.4947368421052634) internal successors, (332), 96 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)