/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-programs/partial_mod_count_limited_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:27:22,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:27:22,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:27:22,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 11:27:22,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 11:27:22,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 11:27:22,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 11:27:22,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 11:27:22,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 11:27:22,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 11:27:22,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 11:27:22,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 11:27:22,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 11:27:22,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 11:27:22,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 11:27:22,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 11:27:22,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 11:27:22,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 11:27:22,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 11:27:22,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 11:27:22,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 11:27:22,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 11:27:22,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 11:27:22,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 11:27:22,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 11:27:22,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 11:27:22,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 11:27:22,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 11:27:22,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 11:27:22,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 11:27:22,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 11:27:22,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 11:27:22,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 11:27:22,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 11:27:22,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 11:27:22,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 11:27:22,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 11:27:22,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 11:27:22,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:27:22,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:27:22,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:27:22,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 11:27:22,426 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:27:22,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:27:22,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:27:22,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:27:22,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:27:22,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:27:22,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:27:22,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:27:22,429 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:27:22,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:27:22,430 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:27:22,430 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:27:22,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:27:22,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:27:22,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:27:22,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:27:22,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:27:22,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:27:22,431 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:27:22,432 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:27:22,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:27:22,432 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:27:22,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:27:22,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:27:22,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:27:22,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:27:22,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:27:22,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:27:22,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:27:22,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:27:22,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:27:22,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:27:22,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:27:22,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:27:22,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:27:22,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:27:22,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:27:22,865 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:27:22,866 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:27:22,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_3.c [2022-10-16 11:27:22,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e371fddb/4f3527cfa53a4fc688af2b7d1871d8da/FLAGa226bcf58 [2022-10-16 11:27:23,560 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:27:23,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_3.c [2022-10-16 11:27:23,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e371fddb/4f3527cfa53a4fc688af2b7d1871d8da/FLAGa226bcf58 [2022-10-16 11:27:23,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e371fddb/4f3527cfa53a4fc688af2b7d1871d8da [2022-10-16 11:27:23,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:27:23,938 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:27:23,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:27:23,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:27:23,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:27:23,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:27:23" (1/1) ... [2022-10-16 11:27:23,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e42e310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:23, skipping insertion in model container [2022-10-16 11:27:23,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:27:23" (1/1) ... [2022-10-16 11:27:23,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:27:23,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:27:24,147 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-programs/partial_mod_count_limited_3.c[331,344] [2022-10-16 11:27:24,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:27:24,179 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:27:24,193 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-programs/partial_mod_count_limited_3.c[331,344] [2022-10-16 11:27:24,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:27:24,221 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:27:24,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24 WrapperNode [2022-10-16 11:27:24,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:27:24,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:27:24,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:27:24,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:27:24,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24" (1/1) ... [2022-10-16 11:27:24,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24" (1/1) ... [2022-10-16 11:27:24,273 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-10-16 11:27:24,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:27:24,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:27:24,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:27:24,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:27:24,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24" (1/1) ... [2022-10-16 11:27:24,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24" (1/1) ... [2022-10-16 11:27:24,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24" (1/1) ... [2022-10-16 11:27:24,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24" (1/1) ... [2022-10-16 11:27:24,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24" (1/1) ... [2022-10-16 11:27:24,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24" (1/1) ... [2022-10-16 11:27:24,304 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24" (1/1) ... [2022-10-16 11:27:24,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24" (1/1) ... [2022-10-16 11:27:24,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:27:24,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:27:24,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:27:24,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:27:24,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24" (1/1) ... [2022-10-16 11:27:24,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:27:24,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:24,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 11:27:24,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 11:27:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 11:27:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 11:27:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 11:27:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 11:27:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:27:24,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:27:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 11:27:24,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 11:27:24,530 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:27:24,533 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:27:24,827 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:27:24,836 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:27:24,836 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 11:27:24,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:27:24 BoogieIcfgContainer [2022-10-16 11:27:24,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:27:24,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:27:24,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:27:24,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:27:24,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:27:23" (1/3) ... [2022-10-16 11:27:24,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1b038c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:27:24, skipping insertion in model container [2022-10-16 11:27:24,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:27:24" (2/3) ... [2022-10-16 11:27:24,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1b038c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:27:24, skipping insertion in model container [2022-10-16 11:27:24,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:27:24" (3/3) ... [2022-10-16 11:27:24,851 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_3.c [2022-10-16 11:27:24,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:27:24,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 11:27:24,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:27:25,018 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;@75201b10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:27:25,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 11:27:25,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 32 states have (on average 1.65625) internal successors, (53), 44 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 11:27:25,064 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:25,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 11:27:25,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:25,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash 889508872, now seen corresponding path program 1 times [2022-10-16 11:27:25,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:25,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085489482] [2022-10-16 11:27:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:25,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:25,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:25,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647114329] [2022-10-16 11:27:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:25,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:25,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:25,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:25,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 11:27:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:25,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-16 11:27:25,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:25,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:27:25,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:25,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085489482] [2022-10-16 11:27:25,407 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:25,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647114329] [2022-10-16 11:27:25,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647114329] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:27:25,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:27:25,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:27:25,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239469559] [2022-10-16 11:27:25,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:27:25,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 11:27:25,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:25,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 11:27:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 11:27:25,460 INFO L87 Difference]: Start difference. First operand has 45 states, 32 states have (on average 1.65625) internal successors, (53), 44 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:25,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:25,482 INFO L93 Difference]: Finished difference Result 87 states and 102 transitions. [2022-10-16 11:27:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 11:27:25,485 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 11:27:25,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:25,495 INFO L225 Difference]: With dead ends: 87 [2022-10-16 11:27:25,495 INFO L226 Difference]: Without dead ends: 40 [2022-10-16 11:27:25,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 11:27:25,504 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:25,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:25,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-10-16 11:27:25,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-10-16 11:27:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-10-16 11:27:25,551 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 6 [2022-10-16 11:27:25,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:25,552 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-10-16 11:27:25,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:25,552 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-10-16 11:27:25,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 11:27:25,553 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:25,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 11:27:25,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:25,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-16 11:27:25,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:25,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:25,771 INFO L85 PathProgramCache]: Analyzing trace with hash 889568454, now seen corresponding path program 1 times [2022-10-16 11:27:25,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:25,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686906369] [2022-10-16 11:27:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:25,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:25,785 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:25,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573760167] [2022-10-16 11:27:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:25,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:25,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:25,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:25,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 11:27:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:25,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 11:27:25,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:25,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:27:25,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686906369] [2022-10-16 11:27:25,866 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573760167] [2022-10-16 11:27:25,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573760167] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:27:25,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:27:25,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:27:25,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543183224] [2022-10-16 11:27:25,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:27:25,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:27:25,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:25,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:27:25,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:27:25,873 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:25,958 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2022-10-16 11:27:25,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:27:25,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 11:27:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:25,960 INFO L225 Difference]: With dead ends: 75 [2022-10-16 11:27:25,960 INFO L226 Difference]: Without dead ends: 74 [2022-10-16 11:27:25,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:27:25,963 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 35 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:25,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 60 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:27:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-10-16 11:27:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 42. [2022-10-16 11:27:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-10-16 11:27:25,973 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2022-10-16 11:27:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:25,974 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-10-16 11:27:25,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-10-16 11:27:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 11:27:25,975 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:25,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:26,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-16 11:27:26,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-10-16 11:27:26,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:26,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:26,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1806818349, now seen corresponding path program 1 times [2022-10-16 11:27:26,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:26,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993744923] [2022-10-16 11:27:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:26,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:26,217 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:26,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987704509] [2022-10-16 11:27:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:26,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:26,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:26,223 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:26,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 11:27:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:26,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 11:27:26,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:26,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:27:26,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:26,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993744923] [2022-10-16 11:27:26,288 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:26,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987704509] [2022-10-16 11:27:26,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987704509] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:27:26,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:27:26,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:27:26,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857453113] [2022-10-16 11:27:26,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:27:26,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:27:26,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:27:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:27:26,291 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:26,347 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2022-10-16 11:27:26,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:27:26,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-10-16 11:27:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:26,351 INFO L225 Difference]: With dead ends: 75 [2022-10-16 11:27:26,351 INFO L226 Difference]: Without dead ends: 74 [2022-10-16 11:27:26,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:27:26,353 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 33 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:26,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 61 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-10-16 11:27:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 43. [2022-10-16 11:27:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-10-16 11:27:26,365 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 7 [2022-10-16 11:27:26,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:26,365 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-10-16 11:27:26,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:26,366 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-10-16 11:27:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 11:27:26,366 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:26,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:26,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:26,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:26,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:26,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:26,584 INFO L85 PathProgramCache]: Analyzing trace with hash 176794024, now seen corresponding path program 1 times [2022-10-16 11:27:26,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:26,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334432058] [2022-10-16 11:27:26,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:26,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:26,598 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:26,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625677359] [2022-10-16 11:27:26,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:26,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:26,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:26,600 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:26,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 11:27:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:26,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:27:26,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:26,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:27:26,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:26,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334432058] [2022-10-16 11:27:26,707 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:26,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625677359] [2022-10-16 11:27:26,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625677359] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:27:26,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:27:26,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-16 11:27:26,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564162130] [2022-10-16 11:27:26,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:27:26,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:27:26,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:26,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:27:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:27:26,710 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:26,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:26,737 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-10-16 11:27:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:27:26,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-16 11:27:26,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:26,739 INFO L225 Difference]: With dead ends: 43 [2022-10-16 11:27:26,740 INFO L226 Difference]: Without dead ends: 41 [2022-10-16 11:27:26,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:27:26,742 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:26,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 33 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:26,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-16 11:27:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-10-16 11:27:26,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-10-16 11:27:26,751 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 8 [2022-10-16 11:27:26,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:26,752 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-10-16 11:27:26,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-10-16 11:27:26,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-16 11:27:26,753 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:26,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:26,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:26,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:26,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:26,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:26,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1184791539, now seen corresponding path program 1 times [2022-10-16 11:27:26,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:26,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251595749] [2022-10-16 11:27:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:26,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:26,983 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:26,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603983755] [2022-10-16 11:27:26,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:26,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:26,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:26,986 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:27,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 11:27:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:27,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:27:27,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:27,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:27:27,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:27,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251595749] [2022-10-16 11:27:27,143 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:27,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603983755] [2022-10-16 11:27:27,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603983755] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:27:27,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:27:27,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:27:27,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563146470] [2022-10-16 11:27:27,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:27:27,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:27:27,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:27,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:27:27,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:27:27,156 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2022-10-16 11:27:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:27,290 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2022-10-16 11:27:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:27:27,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 [2022-10-16 11:27:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:27,293 INFO L225 Difference]: With dead ends: 103 [2022-10-16 11:27:27,293 INFO L226 Difference]: Without dead ends: 69 [2022-10-16 11:27:27,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:27:27,298 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 70 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:27,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 49 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:27:27,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-16 11:27:27,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 44. [2022-10-16 11:27:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.411764705882353) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-10-16 11:27:27,325 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 9 [2022-10-16 11:27:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:27,326 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-10-16 11:27:27,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2022-10-16 11:27:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-10-16 11:27:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 11:27:27,327 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:27,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:27,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-16 11:27:27,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:27,530 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:27,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:27,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1477876941, now seen corresponding path program 1 times [2022-10-16 11:27:27,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:27,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835407594] [2022-10-16 11:27:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:27,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:27,546 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:27,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405354857] [2022-10-16 11:27:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:27,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:27,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:27,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:27,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 11:27:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:27,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:27:27,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:27,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:27:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:27,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835407594] [2022-10-16 11:27:27,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:27,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405354857] [2022-10-16 11:27:27,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405354857] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:27:27,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:27:27,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:27:27,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539552451] [2022-10-16 11:27:27,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:27:27,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:27:27,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:27,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:27:27,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:27:27,684 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2022-10-16 11:27:27,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:27,750 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2022-10-16 11:27:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:27:27,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 [2022-10-16 11:27:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:27,754 INFO L225 Difference]: With dead ends: 78 [2022-10-16 11:27:27,754 INFO L226 Difference]: Without dead ends: 77 [2022-10-16 11:27:27,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:27:27,759 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 31 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:27,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 105 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:27,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-10-16 11:27:27,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 56. [2022-10-16 11:27:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2022-10-16 11:27:27,776 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 13 [2022-10-16 11:27:27,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:27,779 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2022-10-16 11:27:27,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2022-10-16 11:27:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2022-10-16 11:27:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 11:27:27,780 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:27,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:27,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:27,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:27,985 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:27,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:27,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1430455154, now seen corresponding path program 1 times [2022-10-16 11:27:27,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:27,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989404967] [2022-10-16 11:27:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:27,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:28,012 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:28,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692398617] [2022-10-16 11:27:28,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:28,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:28,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:28,027 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:28,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 11:27:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:28,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:27:28,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:28,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:27:28,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:28,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989404967] [2022-10-16 11:27:28,151 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:28,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692398617] [2022-10-16 11:27:28,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692398617] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:27:28,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:27:28,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:27:28,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904441882] [2022-10-16 11:27:28,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:27:28,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:27:28,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:28,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:27:28,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:27:28,154 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) 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) [2022-10-16 11:27:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:28,178 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2022-10-16 11:27:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:27:28,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) 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 14 [2022-10-16 11:27:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:28,180 INFO L225 Difference]: With dead ends: 56 [2022-10-16 11:27:28,180 INFO L226 Difference]: Without dead ends: 55 [2022-10-16 11:27:28,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:27:28,182 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 70 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 [2022-10-16 11:27:28,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 70 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-16 11:27:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-10-16 11:27:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.434782608695652) internal successors, (66), 54 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2022-10-16 11:27:28,195 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 14 [2022-10-16 11:27:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:28,195 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2022-10-16 11:27:28,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) 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) [2022-10-16 11:27:28,196 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2022-10-16 11:27:28,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 11:27:28,196 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:28,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:28,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:28,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:28,403 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:28,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:28,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1430461112, now seen corresponding path program 1 times [2022-10-16 11:27:28,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:28,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100285597] [2022-10-16 11:27:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:28,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:28,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:28,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791478781] [2022-10-16 11:27:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:28,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:28,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:28,442 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:28,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 11:27:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:28,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:27:28,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:28,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:28,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:27:28,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:28,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100285597] [2022-10-16 11:27:28,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:28,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791478781] [2022-10-16 11:27:28,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791478781] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:27:28,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:27:28,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:27:28,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948301540] [2022-10-16 11:27:28,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:27:28,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:27:28,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:28,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:27:28,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:27:28,549 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) 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) [2022-10-16 11:27:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:28,601 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2022-10-16 11:27:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:27:28,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) 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 14 [2022-10-16 11:27:28,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:28,603 INFO L225 Difference]: With dead ends: 81 [2022-10-16 11:27:28,603 INFO L226 Difference]: Without dead ends: 80 [2022-10-16 11:27:28,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:27:28,604 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:28,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 82 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-16 11:27:28,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2022-10-16 11:27:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 62 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2022-10-16 11:27:28,614 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 14 [2022-10-16 11:27:28,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:28,614 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2022-10-16 11:27:28,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) 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) [2022-10-16 11:27:28,615 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2022-10-16 11:27:28,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 11:27:28,616 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:28,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:28,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:28,829 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,SelfDestructingSolverStorable7 [2022-10-16 11:27:28,830 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:28,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1394621589, now seen corresponding path program 1 times [2022-10-16 11:27:28,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:28,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577412580] [2022-10-16 11:27:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:28,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:28,845 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:28,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240726719] [2022-10-16 11:27:28,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:28,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:28,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:28,848 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:28,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 11:27:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:28,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:27:28,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:28,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:27:28,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:28,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577412580] [2022-10-16 11:27:28,943 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:28,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240726719] [2022-10-16 11:27:28,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240726719] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:27:28,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:27:28,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:27:28,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451601495] [2022-10-16 11:27:28,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:27:28,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:27:28,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:28,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:27:28,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:27:28,946 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:28,994 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2022-10-16 11:27:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:27:28,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 [2022-10-16 11:27:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:28,996 INFO L225 Difference]: With dead ends: 77 [2022-10-16 11:27:28,996 INFO L226 Difference]: Without dead ends: 75 [2022-10-16 11:27:28,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:27:28,997 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:28,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 63 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:28,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-10-16 11:27:29,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2022-10-16 11:27:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2022-10-16 11:27:29,006 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 15 [2022-10-16 11:27:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:29,007 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2022-10-16 11:27:29,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2022-10-16 11:27:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-16 11:27:29,008 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:29,008 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:29,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:29,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:29,222 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:29,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:29,223 INFO L85 PathProgramCache]: Analyzing trace with hash 201552183, now seen corresponding path program 1 times [2022-10-16 11:27:29,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:29,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530253718] [2022-10-16 11:27:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:29,236 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:29,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617109844] [2022-10-16 11:27:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:29,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:29,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:29,238 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:29,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 11:27:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:29,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:27:29,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:29,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:29,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:29,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:29,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530253718] [2022-10-16 11:27:29,377 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:29,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617109844] [2022-10-16 11:27:29,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617109844] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:29,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:29,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-16 11:27:29,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647966788] [2022-10-16 11:27:29,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:29,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 11:27:29,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:29,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 11:27:29,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:27:29,381 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 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) [2022-10-16 11:27:29,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:29,502 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2022-10-16 11:27:29,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 11:27:29,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 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 17 [2022-10-16 11:27:29,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:29,504 INFO L225 Difference]: With dead ends: 111 [2022-10-16 11:27:29,504 INFO L226 Difference]: Without dead ends: 109 [2022-10-16 11:27:29,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:27:29,507 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 57 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:29,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 145 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:27:29,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-10-16 11:27:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 92. [2022-10-16 11:27:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 91 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions. [2022-10-16 11:27:29,539 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 17 [2022-10-16 11:27:29,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:29,539 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions. [2022-10-16 11:27:29,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 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) [2022-10-16 11:27:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions. [2022-10-16 11:27:29,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-16 11:27:29,543 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:29,543 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] [2022-10-16 11:27:29,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:29,756 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,SelfDestructingSolverStorable9 [2022-10-16 11:27:29,757 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:29,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:29,758 INFO L85 PathProgramCache]: Analyzing trace with hash 75998690, now seen corresponding path program 1 times [2022-10-16 11:27:29,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:29,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949462825] [2022-10-16 11:27:29,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:29,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:29,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:29,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471040342] [2022-10-16 11:27:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:29,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:29,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:29,773 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:29,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 11:27:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:29,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:27:29,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:29,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:30,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:30,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949462825] [2022-10-16 11:27:30,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:30,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471040342] [2022-10-16 11:27:30,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471040342] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:30,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:30,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-10-16 11:27:30,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180141976] [2022-10-16 11:27:30,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:30,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 11:27:30,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:30,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 11:27:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:27:30,030 INFO L87 Difference]: Start difference. First operand 92 states and 111 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:30,185 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2022-10-16 11:27:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 11:27:30,187 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 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 20 [2022-10-16 11:27:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:30,188 INFO L225 Difference]: With dead ends: 167 [2022-10-16 11:27:30,188 INFO L226 Difference]: Without dead ends: 107 [2022-10-16 11:27:30,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-10-16 11:27:30,191 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 186 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:30,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 98 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:27:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-10-16 11:27:30,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 92. [2022-10-16 11:27:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 91 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:30,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2022-10-16 11:27:30,213 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 20 [2022-10-16 11:27:30,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:30,214 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2022-10-16 11:27:30,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2022-10-16 11:27:30,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-16 11:27:30,217 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:30,217 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:30,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:30,430 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,SelfDestructingSolverStorable10 [2022-10-16 11:27:30,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:30,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:30,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1794451458, now seen corresponding path program 1 times [2022-10-16 11:27:30,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:30,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987333554] [2022-10-16 11:27:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:30,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:30,445 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:30,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361024710] [2022-10-16 11:27:30,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:30,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:30,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:30,447 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:30,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 11:27:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:30,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:27:30,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:30,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:30,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:30,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987333554] [2022-10-16 11:27:30,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:30,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361024710] [2022-10-16 11:27:30,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361024710] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:30,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:30,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-10-16 11:27:30,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428331855] [2022-10-16 11:27:30,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:30,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 11:27:30,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:30,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 11:27:30,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:27:30,640 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:30,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:30,732 INFO L93 Difference]: Finished difference Result 207 states and 233 transitions. [2022-10-16 11:27:30,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 11:27:30,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 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 [2022-10-16 11:27:30,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:30,734 INFO L225 Difference]: With dead ends: 207 [2022-10-16 11:27:30,734 INFO L226 Difference]: Without dead ends: 206 [2022-10-16 11:27:30,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-10-16 11:27:30,735 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 201 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:30,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 249 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-10-16 11:27:30,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 137. [2022-10-16 11:27:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 136 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) [2022-10-16 11:27:30,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 164 transitions. [2022-10-16 11:27:30,745 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 164 transitions. Word has length 26 [2022-10-16 11:27:30,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:30,745 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 164 transitions. [2022-10-16 11:27:30,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:30,746 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 164 transitions. [2022-10-16 11:27:30,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 11:27:30,747 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:30,747 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:30,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:30,961 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,SelfDestructingSolverStorable11 [2022-10-16 11:27:30,962 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:30,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:30,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1099756778, now seen corresponding path program 1 times [2022-10-16 11:27:30,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:30,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326336024] [2022-10-16 11:27:30,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:30,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:30,992 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:30,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399147654] [2022-10-16 11:27:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:30,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:30,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:30,995 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:30,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 11:27:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:31,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 11:27:31,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:31,125 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:31,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:31,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:31,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326336024] [2022-10-16 11:27:31,228 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:31,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399147654] [2022-10-16 11:27:31,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399147654] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:31,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:31,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-10-16 11:27:31,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655723336] [2022-10-16 11:27:31,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:31,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 11:27:31,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:31,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 11:27:31,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-10-16 11:27:31,231 INFO L87 Difference]: Start difference. First operand 137 states and 164 transitions. Second operand has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:31,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:31,433 INFO L93 Difference]: Finished difference Result 321 states and 414 transitions. [2022-10-16 11:27:31,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 11:27:31,434 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 14 states have internal predecessors, (69), 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 36 [2022-10-16 11:27:31,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:31,438 INFO L225 Difference]: With dead ends: 321 [2022-10-16 11:27:31,438 INFO L226 Difference]: Without dead ends: 319 [2022-10-16 11:27:31,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-10-16 11:27:31,440 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 125 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:31,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 174 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:27:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-10-16 11:27:31,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 301. [2022-10-16 11:27:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 295 states have (on average 1.230508474576271) internal successors, (363), 300 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 363 transitions. [2022-10-16 11:27:31,455 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 363 transitions. Word has length 36 [2022-10-16 11:27:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:31,456 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 363 transitions. [2022-10-16 11:27:31,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:31,456 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 363 transitions. [2022-10-16 11:27:31,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 11:27:31,457 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:31,457 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:31,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:31,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 11:27:31,677 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:31,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:31,678 INFO L85 PathProgramCache]: Analyzing trace with hash -762488896, now seen corresponding path program 1 times [2022-10-16 11:27:31,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:31,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169937808] [2022-10-16 11:27:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:31,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:31,693 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:31,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708125694] [2022-10-16 11:27:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:31,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:31,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:31,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:31,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 11:27:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:31,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 11:27:31,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:31,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:32,097 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:32,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:32,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169937808] [2022-10-16 11:27:32,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:32,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708125694] [2022-10-16 11:27:32,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708125694] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:32,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:32,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-10-16 11:27:32,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114746554] [2022-10-16 11:27:32,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:32,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 11:27:32,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:32,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 11:27:32,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-10-16 11:27:32,100 INFO L87 Difference]: Start difference. First operand 301 states and 363 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 17 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) [2022-10-16 11:27:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:32,423 INFO L93 Difference]: Finished difference Result 610 states and 743 transitions. [2022-10-16 11:27:32,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:27:32,423 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 17 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 42 [2022-10-16 11:27:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:32,426 INFO L225 Difference]: With dead ends: 610 [2022-10-16 11:27:32,426 INFO L226 Difference]: Without dead ends: 376 [2022-10-16 11:27:32,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=470, Unknown=0, NotChecked=0, Total=702 [2022-10-16 11:27:32,429 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 383 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:32,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 205 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:27:32,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-10-16 11:27:32,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 360. [2022-10-16 11:27:32,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 354 states have (on average 1.1638418079096045) internal successors, (412), 359 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 412 transitions. [2022-10-16 11:27:32,461 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 412 transitions. Word has length 42 [2022-10-16 11:27:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:32,461 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 412 transitions. [2022-10-16 11:27:32,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 17 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) [2022-10-16 11:27:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 412 transitions. [2022-10-16 11:27:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-16 11:27:32,466 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:32,466 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:32,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:32,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:32,670 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:32,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:32,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1977178571, now seen corresponding path program 1 times [2022-10-16 11:27:32,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:32,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823218351] [2022-10-16 11:27:32,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:32,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:32,689 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:32,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342155755] [2022-10-16 11:27:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:32,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:32,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:32,691 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:32,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 11:27:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:32,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 11:27:32,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:32,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:33,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:33,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823218351] [2022-10-16 11:27:33,137 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:33,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342155755] [2022-10-16 11:27:33,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342155755] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:33,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:33,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-10-16 11:27:33,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321323213] [2022-10-16 11:27:33,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:33,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-16 11:27:33,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:33,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-16 11:27:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-10-16 11:27:33,142 INFO L87 Difference]: Start difference. First operand 360 states and 412 transitions. Second operand has 22 states, 21 states have (on average 6.142857142857143) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:33,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:33,378 INFO L93 Difference]: Finished difference Result 623 states and 707 transitions. [2022-10-16 11:27:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-16 11:27:33,378 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.142857142857143) internal successors, (129), 22 states have internal predecessors, (129), 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 65 [2022-10-16 11:27:33,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:33,383 INFO L225 Difference]: With dead ends: 623 [2022-10-16 11:27:33,383 INFO L226 Difference]: Without dead ends: 622 [2022-10-16 11:27:33,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2022-10-16 11:27:33,387 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 559 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:33,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 442 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:27:33,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-10-16 11:27:33,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 461. [2022-10-16 11:27:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 455 states have (on average 1.1802197802197802) internal successors, (537), 460 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:33,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 537 transitions. [2022-10-16 11:27:33,413 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 537 transitions. Word has length 65 [2022-10-16 11:27:33,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:33,414 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 537 transitions. [2022-10-16 11:27:33,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.142857142857143) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:33,415 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 537 transitions. [2022-10-16 11:27:33,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-16 11:27:33,416 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:33,417 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1] [2022-10-16 11:27:33,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:33,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 11:27:33,631 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:33,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:33,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1530280538, now seen corresponding path program 1 times [2022-10-16 11:27:33,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:33,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080228040] [2022-10-16 11:27:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:33,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:33,670 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:33,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230690231] [2022-10-16 11:27:33,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:33,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:33,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:33,676 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:33,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 11:27:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:33,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 11:27:33,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:33,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:34,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:34,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080228040] [2022-10-16 11:27:34,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:34,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230690231] [2022-10-16 11:27:34,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230690231] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:34,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:34,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2022-10-16 11:27:34,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394423361] [2022-10-16 11:27:34,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:34,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 11:27:34,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:34,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 11:27:34,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-10-16 11:27:34,221 INFO L87 Difference]: Start difference. First operand 461 states and 537 transitions. Second operand has 28 states, 27 states have (on average 5.222222222222222) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:34,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:34,627 INFO L93 Difference]: Finished difference Result 1237 states and 1552 transitions. [2022-10-16 11:27:34,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 11:27:34,628 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.222222222222222) internal successors, (141), 28 states have internal predecessors, (141), 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 72 [2022-10-16 11:27:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:34,635 INFO L225 Difference]: With dead ends: 1237 [2022-10-16 11:27:34,635 INFO L226 Difference]: Without dead ends: 1236 [2022-10-16 11:27:34,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=475, Invalid=1085, Unknown=0, NotChecked=0, Total=1560 [2022-10-16 11:27:34,638 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 390 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:34,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 197 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:27:34,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2022-10-16 11:27:34,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1214. [2022-10-16 11:27:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1208 states have (on average 1.2119205298013245) internal successors, (1464), 1213 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1464 transitions. [2022-10-16 11:27:34,686 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1464 transitions. Word has length 72 [2022-10-16 11:27:34,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:34,687 INFO L495 AbstractCegarLoop]: Abstraction has 1214 states and 1464 transitions. [2022-10-16 11:27:34,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.222222222222222) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:34,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1464 transitions. [2022-10-16 11:27:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-16 11:27:34,690 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:34,690 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:34,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:34,905 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,SelfDestructingSolverStorable15 [2022-10-16 11:27:34,906 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:34,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:34,907 INFO L85 PathProgramCache]: Analyzing trace with hash -556711616, now seen corresponding path program 2 times [2022-10-16 11:27:34,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:34,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419950875] [2022-10-16 11:27:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:34,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:34,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:34,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396787543] [2022-10-16 11:27:34,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:27:34,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:34,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:34,928 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:34,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 11:27:34,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:27:34,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:27:34,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:27:34,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-10-16 11:27:35,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:27:35,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:35,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419950875] [2022-10-16 11:27:35,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:35,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396787543] [2022-10-16 11:27:35,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396787543] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:27:35,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:27:35,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:27:35,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028338743] [2022-10-16 11:27:35,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:27:35,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:27:35,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:35,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:27:35,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:27:35,083 INFO L87 Difference]: Start difference. First operand 1214 states and 1464 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:35,129 INFO L93 Difference]: Finished difference Result 1228 states and 1479 transitions. [2022-10-16 11:27:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:27:35,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-10-16 11:27:35,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:35,136 INFO L225 Difference]: With dead ends: 1228 [2022-10-16 11:27:35,136 INFO L226 Difference]: Without dead ends: 1227 [2022-10-16 11:27:35,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:27:35,138 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:35,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 77 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-10-16 11:27:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1223. [2022-10-16 11:27:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1217 states have (on average 1.2128184059161873) internal successors, (1476), 1222 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1476 transitions. [2022-10-16 11:27:35,203 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1476 transitions. Word has length 86 [2022-10-16 11:27:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:35,203 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1476 transitions. [2022-10-16 11:27:35,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1476 transitions. [2022-10-16 11:27:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-16 11:27:35,205 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:35,205 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:35,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:35,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 11:27:35,419 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:35,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:35,420 INFO L85 PathProgramCache]: Analyzing trace with hash -78190816, now seen corresponding path program 1 times [2022-10-16 11:27:35,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:35,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362230929] [2022-10-16 11:27:35,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:35,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:35,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:35,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309131308] [2022-10-16 11:27:35,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:35,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:35,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:35,439 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:35,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 11:27:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:35,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 11:27:35,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:35,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:36,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:36,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362230929] [2022-10-16 11:27:36,246 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:36,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309131308] [2022-10-16 11:27:36,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309131308] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:36,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:36,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2022-10-16 11:27:36,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080619012] [2022-10-16 11:27:36,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:36,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 11:27:36,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:36,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 11:27:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=815, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 11:27:36,249 INFO L87 Difference]: Start difference. First operand 1223 states and 1476 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:37,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:37,144 INFO L93 Difference]: Finished difference Result 2567 states and 3135 transitions. [2022-10-16 11:27:37,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-16 11:27:37,145 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 33 states have internal predecessors, (169), 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 87 [2022-10-16 11:27:37,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:37,153 INFO L225 Difference]: With dead ends: 2567 [2022-10-16 11:27:37,153 INFO L226 Difference]: Without dead ends: 1520 [2022-10-16 11:27:37,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=902, Invalid=2068, Unknown=0, NotChecked=0, Total=2970 [2022-10-16 11:27:37,158 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 613 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:37,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 178 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 11:27:37,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2022-10-16 11:27:37,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1496. [2022-10-16 11:27:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1490 states have (on average 1.1543624161073827) internal successors, (1720), 1495 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:37,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1720 transitions. [2022-10-16 11:27:37,213 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1720 transitions. Word has length 87 [2022-10-16 11:27:37,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:37,214 INFO L495 AbstractCegarLoop]: Abstraction has 1496 states and 1720 transitions. [2022-10-16 11:27:37,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:37,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1720 transitions. [2022-10-16 11:27:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-10-16 11:27:37,217 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:37,217 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 8, 3, 1, 1, 1, 1, 1] [2022-10-16 11:27:37,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 11:27:37,433 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:37,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash 853172373, now seen corresponding path program 2 times [2022-10-16 11:27:37,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:37,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576644105] [2022-10-16 11:27:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:37,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:37,455 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:37,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074026281] [2022-10-16 11:27:37,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:27:37,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:37,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:37,456 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:37,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 11:27:37,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:27:37,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:27:37,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:27:37,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-10-16 11:27:37,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-10-16 11:27:37,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:37,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576644105] [2022-10-16 11:27:37,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:37,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074026281] [2022-10-16 11:27:37,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074026281] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:37,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:37,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2022-10-16 11:27:37,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616433090] [2022-10-16 11:27:37,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:37,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 11:27:37,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:37,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 11:27:37,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:27:37,863 INFO L87 Difference]: Start difference. First operand 1496 states and 1720 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:37,946 INFO L93 Difference]: Finished difference Result 2338 states and 2723 transitions. [2022-10-16 11:27:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:27:37,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 143 [2022-10-16 11:27:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:37,958 INFO L225 Difference]: With dead ends: 2338 [2022-10-16 11:27:37,958 INFO L226 Difference]: Without dead ends: 2337 [2022-10-16 11:27:37,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:27:37,960 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 72 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:37,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 96 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:37,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2022-10-16 11:27:38,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 1496. [2022-10-16 11:27:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1490 states have (on average 1.1543624161073827) internal successors, (1720), 1495 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1720 transitions. [2022-10-16 11:27:38,021 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1720 transitions. Word has length 143 [2022-10-16 11:27:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:38,022 INFO L495 AbstractCegarLoop]: Abstraction has 1496 states and 1720 transitions. [2022-10-16 11:27:38,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1720 transitions. [2022-10-16 11:27:38,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-10-16 11:27:38,025 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:38,025 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 2, 1, 1, 1, 1, 1] [2022-10-16 11:27:38,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:38,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:38,242 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:38,243 INFO L85 PathProgramCache]: Analyzing trace with hash 853231955, now seen corresponding path program 3 times [2022-10-16 11:27:38,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:38,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572431100] [2022-10-16 11:27:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:38,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:38,263 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:38,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704198899] [2022-10-16 11:27:38,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:27:38,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:38,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:38,265 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:38,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 11:27:38,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 11:27:38,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:27:38,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 11:27:38,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:38,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-16 11:27:38,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2022-10-16 11:27:38,613 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 11 proven. 142 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2022-10-16 11:27:38,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 10 proven. 143 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2022-10-16 11:27:39,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:39,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572431100] [2022-10-16 11:27:39,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:39,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704198899] [2022-10-16 11:27:39,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704198899] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:39,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:39,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-10-16 11:27:39,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200408412] [2022-10-16 11:27:39,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:39,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 11:27:39,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:39,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 11:27:39,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-10-16 11:27:39,760 INFO L87 Difference]: Start difference. First operand 1496 states and 1720 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:40,044 INFO L93 Difference]: Finished difference Result 2186 states and 2543 transitions. [2022-10-16 11:27:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 11:27:40,044 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 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 143 [2022-10-16 11:27:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:40,049 INFO L225 Difference]: With dead ends: 2186 [2022-10-16 11:27:40,050 INFO L226 Difference]: Without dead ends: 860 [2022-10-16 11:27:40,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2022-10-16 11:27:40,053 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 145 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:40,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 126 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:27:40,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-10-16 11:27:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 223. [2022-10-16 11:27:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 218 states have (on average 1.114678899082569) internal successors, (243), 222 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 243 transitions. [2022-10-16 11:27:40,072 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 243 transitions. Word has length 143 [2022-10-16 11:27:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:40,073 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 243 transitions. [2022-10-16 11:27:40,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 243 transitions. [2022-10-16 11:27:40,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-10-16 11:27:40,075 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:40,075 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 8, 5, 1, 1, 1, 1, 1] [2022-10-16 11:27:40,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:40,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:40,286 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:40,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:40,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1760822713, now seen corresponding path program 2 times [2022-10-16 11:27:40,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:40,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380147819] [2022-10-16 11:27:40,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:40,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:40,315 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:40,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835714067] [2022-10-16 11:27:40,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:27:40,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:40,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:40,317 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:40,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 11:27:40,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:27:40,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:27:40,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:27:40,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2022-10-16 11:27:40,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2022-10-16 11:27:40,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:40,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380147819] [2022-10-16 11:27:40,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:40,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835714067] [2022-10-16 11:27:40,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835714067] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:40,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:40,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-10-16 11:27:40,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225518732] [2022-10-16 11:27:40,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:40,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:27:40,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:40,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:27:40,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:27:40,747 INFO L87 Difference]: Start difference. First operand 223 states and 243 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:40,788 INFO L93 Difference]: Finished difference Result 224 states and 244 transitions. [2022-10-16 11:27:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:27:40,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 149 [2022-10-16 11:27:40,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:40,790 INFO L225 Difference]: With dead ends: 224 [2022-10-16 11:27:40,790 INFO L226 Difference]: Without dead ends: 223 [2022-10-16 11:27:40,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:27:40,791 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 75 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:40,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:40,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-10-16 11:27:40,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2022-10-16 11:27:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 218 states have (on average 1.1055045871559632) internal successors, (241), 221 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:40,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 241 transitions. [2022-10-16 11:27:40,805 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 241 transitions. Word has length 149 [2022-10-16 11:27:40,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:40,806 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 241 transitions. [2022-10-16 11:27:40,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:40,806 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 241 transitions. [2022-10-16 11:27:40,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-10-16 11:27:40,808 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:40,808 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:40,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-10-16 11:27:41,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:41,023 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:41,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:41,024 INFO L85 PathProgramCache]: Analyzing trace with hash -192642016, now seen corresponding path program 2 times [2022-10-16 11:27:41,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:41,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982324279] [2022-10-16 11:27:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:41,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:41,051 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:41,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394043402] [2022-10-16 11:27:41,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:27:41,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:41,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:41,053 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:41,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 11:27:41,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:27:41,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:27:41,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:27:41,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2022-10-16 11:27:41,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:27:41,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:41,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982324279] [2022-10-16 11:27:41,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:41,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394043402] [2022-10-16 11:27:41,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394043402] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:27:41,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:27:41,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:27:41,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99074964] [2022-10-16 11:27:41,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:27:41,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:27:41,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:27:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:27:41,330 INFO L87 Difference]: Start difference. First operand 222 states and 241 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:41,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:41,374 INFO L93 Difference]: Finished difference Result 222 states and 241 transitions. [2022-10-16 11:27:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:27:41,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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 175 [2022-10-16 11:27:41,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:41,376 INFO L225 Difference]: With dead ends: 222 [2022-10-16 11:27:41,376 INFO L226 Difference]: Without dead ends: 221 [2022-10-16 11:27:41,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:27:41,377 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:41,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 60 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-10-16 11:27:41,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-10-16 11:27:41,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 218 states have (on average 1.1009174311926606) internal successors, (240), 220 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 240 transitions. [2022-10-16 11:27:41,392 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 240 transitions. Word has length 175 [2022-10-16 11:27:41,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:41,393 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 240 transitions. [2022-10-16 11:27:41,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:41,393 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 240 transitions. [2022-10-16 11:27:41,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-10-16 11:27:41,395 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:41,395 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:41,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:41,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:41,609 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:41,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:41,610 INFO L85 PathProgramCache]: Analyzing trace with hash -744239164, now seen corresponding path program 1 times [2022-10-16 11:27:41,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:41,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35256014] [2022-10-16 11:27:41,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:41,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:41,636 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:41,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462300376] [2022-10-16 11:27:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:41,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:41,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:41,638 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:41,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 11:27:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:41,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-16 11:27:41,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 0 proven. 1170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:42,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 0 proven. 1170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:43,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:43,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35256014] [2022-10-16 11:27:43,836 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:43,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462300376] [2022-10-16 11:27:43,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462300376] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:43,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:43,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2022-10-16 11:27:43,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992238307] [2022-10-16 11:27:43,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:43,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-10-16 11:27:43,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:43,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-10-16 11:27:43,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1123, Invalid=3167, Unknown=0, NotChecked=0, Total=4290 [2022-10-16 11:27:43,844 INFO L87 Difference]: Start difference. First operand 221 states and 240 transitions. Second operand has 66 states, 66 states have (on average 5.2727272727272725) internal successors, (348), 65 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:46,392 INFO L93 Difference]: Finished difference Result 568 states and 648 transitions. [2022-10-16 11:27:46,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-16 11:27:46,393 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 5.2727272727272725) internal successors, (348), 65 states have internal predecessors, (348), 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 178 [2022-10-16 11:27:46,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:46,396 INFO L225 Difference]: With dead ends: 568 [2022-10-16 11:27:46,396 INFO L226 Difference]: Without dead ends: 447 [2022-10-16 11:27:46,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3979 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3538, Invalid=8672, Unknown=0, NotChecked=0, Total=12210 [2022-10-16 11:27:46,401 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1546 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:46,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 186 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 11:27:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-10-16 11:27:46,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 429. [2022-10-16 11:27:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 426 states have (on average 1.0892018779342723) internal successors, (464), 428 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:46,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 464 transitions. [2022-10-16 11:27:46,431 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 464 transitions. Word has length 178 [2022-10-16 11:27:46,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:46,432 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 464 transitions. [2022-10-16 11:27:46,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 5.2727272727272725) internal successors, (348), 65 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:46,432 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 464 transitions. [2022-10-16 11:27:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-10-16 11:27:46,438 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:46,438 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:46,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:46,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:46,653 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash 117577156, now seen corresponding path program 2 times [2022-10-16 11:27:46,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:46,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491592733] [2022-10-16 11:27:46,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:46,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:46,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:46,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379195180] [2022-10-16 11:27:46,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:27:46,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:46,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:46,697 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:46,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 11:27:46,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:27:46,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:27:46,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:27:46,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:46,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5146 trivial. 0 not checked. [2022-10-16 11:27:46,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:27:46,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:46,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491592733] [2022-10-16 11:27:46,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:46,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379195180] [2022-10-16 11:27:46,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379195180] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:27:46,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:27:46,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:27:46,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691999329] [2022-10-16 11:27:46,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:27:46,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:27:46,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:46,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:27:46,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:27:46,866 INFO L87 Difference]: Start difference. First operand 429 states and 464 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:27:46,933 INFO L93 Difference]: Finished difference Result 447 states and 485 transitions. [2022-10-16 11:27:46,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:27:46,933 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), 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 354 [2022-10-16 11:27:46,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:27:46,936 INFO L225 Difference]: With dead ends: 447 [2022-10-16 11:27:46,937 INFO L226 Difference]: Without dead ends: 446 [2022-10-16 11:27:46,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:27:46,938 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:27:46,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 66 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:27:46,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-10-16 11:27:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 443. [2022-10-16 11:27:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 440 states have (on average 1.0886363636363636) internal successors, (479), 442 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 479 transitions. [2022-10-16 11:27:46,973 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 479 transitions. Word has length 354 [2022-10-16 11:27:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:27:46,974 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 479 transitions. [2022-10-16 11:27:46,974 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:27:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 479 transitions. [2022-10-16 11:27:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-10-16 11:27:46,980 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:27:46,980 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:27:47,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-16 11:27:47,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:47,195 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:27:47,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:27:47,196 INFO L85 PathProgramCache]: Analyzing trace with hash -650075345, now seen corresponding path program 1 times [2022-10-16 11:27:47,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:27:47,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557580214] [2022-10-16 11:27:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:47,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:27:47,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:27:47,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195823282] [2022-10-16 11:27:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:27:47,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:27:47,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:27:47,241 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:27:47,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-16 11:27:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:27:47,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 65 conjunts are in the unsatisfiable core [2022-10-16 11:27:47,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:27:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5146 backedges. 0 proven. 5146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:50,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:27:55,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5146 backedges. 0 proven. 5146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:27:55,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:27:55,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557580214] [2022-10-16 11:27:55,570 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:27:55,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195823282] [2022-10-16 11:27:55,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195823282] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:27:55,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:27:55,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 129 [2022-10-16 11:27:55,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292517893] [2022-10-16 11:27:55,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:27:55,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-10-16 11:27:55,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:27:55,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-10-16 11:27:55,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4291, Invalid=12479, Unknown=0, NotChecked=0, Total=16770 [2022-10-16 11:27:55,580 INFO L87 Difference]: Start difference. First operand 443 states and 479 transitions. Second operand has 130 states, 130 states have (on average 5.392307692307693) internal successors, (701), 129 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:28:10,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:28:10,321 INFO L93 Difference]: Finished difference Result 1117 states and 1269 transitions. [2022-10-16 11:28:10,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-10-16 11:28:10,323 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 5.392307692307693) internal successors, (701), 129 states have internal predecessors, (701), 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 355 [2022-10-16 11:28:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:28:10,327 INFO L225 Difference]: With dead ends: 1117 [2022-10-16 11:28:10,328 INFO L226 Difference]: Without dead ends: 862 [2022-10-16 11:28:10,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16899 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=13994, Invalid=35512, Unknown=0, NotChecked=0, Total=49506 [2022-10-16 11:28:10,340 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2301 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-16 11:28:10,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 322 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-16 11:28:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-10-16 11:28:10,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 859. [2022-10-16 11:28:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 856 states have (on average 1.0829439252336448) internal successors, (927), 858 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:28:10,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 927 transitions. [2022-10-16 11:28:10,399 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 927 transitions. Word has length 355 [2022-10-16 11:28:10,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:28:10,400 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 927 transitions. [2022-10-16 11:28:10,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 5.392307692307693) internal successors, (701), 129 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:28:10,400 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 927 transitions. [2022-10-16 11:28:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2022-10-16 11:28:10,419 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:28:10,419 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:28:10,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-16 11:28:10,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-10-16 11:28:10,636 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:28:10,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:28:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash -158951633, now seen corresponding path program 2 times [2022-10-16 11:28:10,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:28:10,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750523907] [2022-10-16 11:28:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:28:10,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:28:10,723 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:28:10,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525412402] [2022-10-16 11:28:10,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:28:10,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:28:10,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:28:10,726 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:28:10,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-16 11:28:10,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:28:10,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:28:10,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:28:10,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:28:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 21546 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21546 trivial. 0 not checked. [2022-10-16 11:28:10,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:28:10,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:28:11,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750523907] [2022-10-16 11:28:11,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:28:11,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525412402] [2022-10-16 11:28:11,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525412402] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:28:11,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:28:11,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:28:11,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952020301] [2022-10-16 11:28:11,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:28:11,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:28:11,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:28:11,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:28:11,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:28:11,003 INFO L87 Difference]: Start difference. First operand 859 states and 927 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:28:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:28:11,106 INFO L93 Difference]: Finished difference Result 859 states and 927 transitions. [2022-10-16 11:28:11,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:28:11,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 707 [2022-10-16 11:28:11,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:28:11,112 INFO L225 Difference]: With dead ends: 859 [2022-10-16 11:28:11,112 INFO L226 Difference]: Without dead ends: 858 [2022-10-16 11:28:11,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:28:11,113 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:28:11,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 54 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:28:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-10-16 11:28:11,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2022-10-16 11:28:11,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 856 states have (on average 1.080607476635514) internal successors, (925), 857 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:28:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 925 transitions. [2022-10-16 11:28:11,171 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 925 transitions. Word has length 707 [2022-10-16 11:28:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:28:11,172 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 925 transitions. [2022-10-16 11:28:11,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:28:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 925 transitions. [2022-10-16 11:28:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2022-10-16 11:28:11,193 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:28:11,194 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 32, 31, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:28:11,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-10-16 11:28:11,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-16 11:28:11,408 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:28:11,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:28:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1419425616, now seen corresponding path program 1 times [2022-10-16 11:28:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:28:11,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217256367] [2022-10-16 11:28:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:28:11,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:28:11,480 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:28:11,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165585803] [2022-10-16 11:28:11,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:28:11,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:28:11,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:28:11,482 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:28:11,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-10-16 11:28:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:28:11,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 129 conjunts are in the unsatisfiable core [2022-10-16 11:28:11,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:28:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 21549 backedges. 0 proven. 21546 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 11:28:20,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:29:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 21549 backedges. 0 proven. 21546 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 11:29:54,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:29:54,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217256367] [2022-10-16 11:29:54,578 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:29:54,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165585803] [2022-10-16 11:29:54,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165585803] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:29:54,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:29:54,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 257 [2022-10-16 11:29:54,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526587622] [2022-10-16 11:29:54,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:29:54,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 258 states [2022-10-16 11:29:54,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:29:54,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2022-10-16 11:29:54,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16771, Invalid=49535, Unknown=0, NotChecked=0, Total=66306 [2022-10-16 11:29:54,594 INFO L87 Difference]: Start difference. First operand 858 states and 925 transitions. Second operand has 258 states, 258 states have (on average 5.457364341085271) internal successors, (1408), 257 states have internal predecessors, (1408), 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)