/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/array-patterns/array19_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 22:26:05,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 22:26:05,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 22:26:05,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-30 22:26:05,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-30 22:26:05,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-30 22:26:05,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-30 22:26:05,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-30 22:26:05,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-30 22:26:05,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-30 22:26:05,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-30 22:26:05,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-30 22:26:05,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 22:26:05,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 22:26:05,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 22:26:05,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 22:26:05,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 22:26:05,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 22:26:05,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 22:26:05,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 22:26:05,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 22:26:05,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 22:26:05,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 22:26:05,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 22:26:05,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 22:26:05,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-30 22:26:05,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-30 22:26:05,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-30 22:26:05,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-30 22:26:05,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-30 22:26:05,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-30 22:26:05,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-30 22:26:05,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-30 22:26:05,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 22:26:05,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 22:26:05,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 22:26:05,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 22:26:05,276 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 22:26:05,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 22:26:05,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 22:26:05,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 22:26:05,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 22:26:05,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 22:26:05,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 22:26:05,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 22:26:05,278 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 22:26:05,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 22:26:05,279 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 22:26:05,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 22:26:05,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 22:26:05,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 22:26:05,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 22:26:05,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 22:26:05,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 22:26:05,280 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 22:26:05,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 22:26:05,280 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 22:26:05,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 22:26:05,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 22:26:05,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 22:26:05,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 22:26:05,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:26:05,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 22:26:05,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 22:26:05,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 22:26:05,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 22:26:05,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 22:26:05,281 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 22:26:05,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 22:26:05,282 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 22:26:05,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 22:26:05,282 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 22:26:05,282 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 22:26:05,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 22:26:05,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 22:26:05,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 22:26:05,506 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 22:26:05,507 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 22:26:05,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array19_pattern.c [2023-03-30 22:26:06,676 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 22:26:06,836 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 22:26:06,837 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array19_pattern.c [2023-03-30 22:26:06,842 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e398699a/138b43f8544145a1b4d603e0bbf4f697/FLAGf21a69d5b [2023-03-30 22:26:06,858 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e398699a/138b43f8544145a1b4d603e0bbf4f697 [2023-03-30 22:26:06,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 22:26:06,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 22:26:06,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 22:26:06,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 22:26:06,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 22:26:06,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:26:06" (1/1) ... [2023-03-30 22:26:06,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463235b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:26:06, skipping insertion in model container [2023-03-30 22:26:06,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:26:06" (1/1) ... [2023-03-30 22:26:06,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 22:26:06,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 22:26:06,968 WARN L247 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-patterns/array19_pattern.c[1442,1455] [2023-03-30 22:26:06,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:26:07,003 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 22:26:07,011 WARN L247 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-patterns/array19_pattern.c[1442,1455] [2023-03-30 22:26:07,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:26:07,041 INFO L208 MainTranslator]: Completed translation [2023-03-30 22:26:07,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:26:07 WrapperNode [2023-03-30 22:26:07,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 22:26:07,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 22:26:07,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 22:26:07,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 22:26:07,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:26:07" (1/1) ... [2023-03-30 22:26:07,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:26:07" (1/1) ... [2023-03-30 22:26:07,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:26:07" (1/1) ... [2023-03-30 22:26:07,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:26:07" (1/1) ... [2023-03-30 22:26:07,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:26:07" (1/1) ... [2023-03-30 22:26:07,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:26:07" (1/1) ... [2023-03-30 22:26:07,077 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:26:07" (1/1) ... [2023-03-30 22:26:07,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:26:07" (1/1) ... [2023-03-30 22:26:07,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 22:26:07,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 22:26:07,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 22:26:07,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 22:26:07,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:26:07" (1/1) ... [2023-03-30 22:26:07,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:26:07,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:26:07,107 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) [2023-03-30 22:26:07,145 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 [2023-03-30 22:26:07,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 22:26:07,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 22:26:07,161 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 22:26:07,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-30 22:26:07,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-30 22:26:07,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 22:26:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 22:26:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 22:26:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 22:26:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 22:26:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-30 22:26:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-30 22:26:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 22:26:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-03-30 22:26:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 22:26:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-30 22:26:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 22:26:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 22:26:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 22:26:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 22:26:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 22:26:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 22:26:07,223 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 22:26:07,224 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 22:26:07,491 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 22:26:07,495 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 22:26:07,495 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-30 22:26:07,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:26:07 BoogieIcfgContainer [2023-03-30 22:26:07,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 22:26:07,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 22:26:07,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 22:26:07,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 22:26:07,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 10:26:06" (1/3) ... [2023-03-30 22:26:07,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f4525d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:26:07, skipping insertion in model container [2023-03-30 22:26:07,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:26:07" (2/3) ... [2023-03-30 22:26:07,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f4525d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:26:07, skipping insertion in model container [2023-03-30 22:26:07,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:26:07" (3/3) ... [2023-03-30 22:26:07,502 INFO L112 eAbstractionObserver]: Analyzing ICFG array19_pattern.c [2023-03-30 22:26:07,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 22:26:07,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 22:26:07,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 22:26:07,566 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55259e7f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 22:26:07,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 22:26:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 30 states have internal predecessors, (45), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-30 22:26:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-03-30 22:26:07,573 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:26:07,573 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] [2023-03-30 22:26:07,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:26:07,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:26:07,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1815321502, now seen corresponding path program 1 times [2023-03-30 22:26:07,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:26:07,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655091395] [2023-03-30 22:26:07,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:26:07,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:26:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:26:07,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:26:07,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655091395] [2023-03-30 22:26:07,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-03-30 22:26:07,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909853281] [2023-03-30 22:26:07,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:26:07,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:26:07,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:26:07,681 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) [2023-03-30 22:26:07,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 22:26:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:26:07,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 1 conjunts are in the unsatisfiable core [2023-03-30 22:26:07,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:26:07,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:26:07,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:26:07,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909853281] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:26:07,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:26:07,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-30 22:26:07,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847030398] [2023-03-30 22:26:07,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:26:07,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-30 22:26:07,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:26:07,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-30 22:26:07,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-30 22:26:07,860 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 30 states have internal predecessors, (45), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 22:26:07,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:26:07,884 INFO L93 Difference]: Finished difference Result 75 states and 110 transitions. [2023-03-30 22:26:07,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-30 22:26:07,886 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-03-30 22:26:07,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:26:07,890 INFO L225 Difference]: With dead ends: 75 [2023-03-30 22:26:07,891 INFO L226 Difference]: Without dead ends: 34 [2023-03-30 22:26:07,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-30 22:26:07,896 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 [2023-03-30 22:26:07,897 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] [2023-03-30 22:26:07,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-03-30 22:26:07,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-03-30 22:26:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:26:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-03-30 22:26:07,928 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 20 [2023-03-30 22:26:07,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:26:07,929 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-03-30 22:26:07,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 22:26:07,930 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-03-30 22:26:07,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-03-30 22:26:07,937 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:26:07,937 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:26:07,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-30 22:26:08,143 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 [2023-03-30 22:26:08,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:26:08,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:26:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1707268263, now seen corresponding path program 1 times [2023-03-30 22:26:08,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:26:08,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095146900] [2023-03-30 22:26:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:26:08,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:26:08,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-30 22:26:08,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479535146] [2023-03-30 22:26:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:26:08,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:26:08,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:26:08,191 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) [2023-03-30 22:26:08,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 22:26:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:26:08,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-30 22:26:08,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:26:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-30 22:26:08,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:26:08,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:26:08,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095146900] [2023-03-30 22:26:08,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-30 22:26:08,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479535146] [2023-03-30 22:26:08,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479535146] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:26:08,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:26:08,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-30 22:26:08,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334838566] [2023-03-30 22:26:08,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:26:08,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 22:26:08,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:26:08,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 22:26:08,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-30 22:26:08,362 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:26:08,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:26:08,388 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2023-03-30 22:26:08,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 22:26:08,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2023-03-30 22:26:08,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:26:08,389 INFO L225 Difference]: With dead ends: 42 [2023-03-30 22:26:08,389 INFO L226 Difference]: Without dead ends: 37 [2023-03-30 22:26:08,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:26:08,390 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:26:08,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 137 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-30 22:26:08,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-03-30 22:26:08,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-03-30 22:26:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:26:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2023-03-30 22:26:08,401 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 35 [2023-03-30 22:26:08,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:26:08,402 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2023-03-30 22:26:08,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:26:08,402 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2023-03-30 22:26:08,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-03-30 22:26:08,404 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:26:08,404 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:26:08,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 22:26:08,608 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 [2023-03-30 22:26:08,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:26:08,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:26:08,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1264760567, now seen corresponding path program 1 times [2023-03-30 22:26:08,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:26:08,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640886929] [2023-03-30 22:26:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:26:08,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:26:08,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-30 22:26:08,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485592461] [2023-03-30 22:26:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:26:08,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:26:08,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:26:08,633 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) [2023-03-30 22:26:08,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 22:26:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:26:08,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 22:26:08,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:26:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-30 22:26:08,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:26:08,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:26:08,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640886929] [2023-03-30 22:26:08,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-30 22:26:08,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485592461] [2023-03-30 22:26:08,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485592461] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:26:08,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:26:08,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-30 22:26:08,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651958464] [2023-03-30 22:26:08,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:26:08,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 22:26:08,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:26:08,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 22:26:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 22:26:08,783 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:26:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:26:08,868 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2023-03-30 22:26:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-30 22:26:08,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-03-30 22:26:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:26:08,869 INFO L225 Difference]: With dead ends: 73 [2023-03-30 22:26:08,869 INFO L226 Difference]: Without dead ends: 47 [2023-03-30 22:26:08,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-30 22:26:08,870 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 24 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:26:08,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 104 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:26:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-03-30 22:26:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2023-03-30 22:26:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:26:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2023-03-30 22:26:08,875 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 40 [2023-03-30 22:26:08,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:26:08,876 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2023-03-30 22:26:08,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:26:08,876 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2023-03-30 22:26:08,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-03-30 22:26:08,877 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:26:08,877 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:26:08,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 22:26:09,081 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 [2023-03-30 22:26:09,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:26:09,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:26:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1081014679, now seen corresponding path program 1 times [2023-03-30 22:26:09,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:26:09,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134016947] [2023-03-30 22:26:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:26:09,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:26:09,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-30 22:26:09,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562859932] [2023-03-30 22:26:09,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:26:09,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:26:09,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:26:09,097 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) [2023-03-30 22:26:09,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 22:26:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:26:09,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 22:26:09,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:26:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-30 22:26:09,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:26:09,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:26:09,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134016947] [2023-03-30 22:26:09,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-30 22:26:09,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562859932] [2023-03-30 22:26:09,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562859932] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:26:09,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:26:09,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 22:26:09,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984847387] [2023-03-30 22:26:09,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:26:09,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 22:26:09,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:26:09,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 22:26:09,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 22:26:09,184 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:26:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:26:09,252 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2023-03-30 22:26:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-30 22:26:09,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2023-03-30 22:26:09,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:26:09,253 INFO L225 Difference]: With dead ends: 70 [2023-03-30 22:26:09,253 INFO L226 Difference]: Without dead ends: 41 [2023-03-30 22:26:09,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 22:26:09,254 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 25 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-30 22:26:09,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 70 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-30 22:26:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-03-30 22:26:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2023-03-30 22:26:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 22:26:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2023-03-30 22:26:09,259 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 43 [2023-03-30 22:26:09,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:26:09,260 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2023-03-30 22:26:09,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-30 22:26:09,260 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-03-30 22:26:09,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-03-30 22:26:09,260 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:26:09,261 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:26:09,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-03-30 22:26:09,461 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 [2023-03-30 22:26:09,462 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:26:09,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:26:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1759411623, now seen corresponding path program 1 times [2023-03-30 22:26:09,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:26:09,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157693322] [2023-03-30 22:26:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:26:09,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:26:09,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-30 22:26:09,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174931609] [2023-03-30 22:26:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:26:09,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:26:09,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:26:09,489 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) [2023-03-30 22:26:09,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 22:26:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:26:09,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 47 conjunts are in the unsatisfiable core [2023-03-30 22:26:09,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:26:09,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-30 22:26:10,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 132 [2023-03-30 22:26:10,311 INFO L321 Elim1Store]: treesize reduction 148, result has 3.3 percent of original size [2023-03-30 22:26:10,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 572 [2023-03-30 22:26:10,650 INFO L321 Elim1Store]: treesize reduction 714, result has 8.3 percent of original size [2023-03-30 22:26:10,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 12 case distinctions, treesize of input 323 treesize of output 755 [2023-03-30 22:26:10,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 174 [2023-03-30 22:26:10,930 INFO L321 Elim1Store]: treesize reduction 188, result has 2.6 percent of original size [2023-03-30 22:26:10,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 177 treesize of output 734 [2023-03-30 22:26:11,352 INFO L321 Elim1Store]: treesize reduction 399, result has 11.5 percent of original size [2023-03-30 22:26:11,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 226 treesize of output 343 [2023-03-30 22:26:18,364 INFO L350 Elim1Store]: Elim1 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 741 treesize of output 705 [2023-03-30 22:26:19,870 INFO L321 Elim1Store]: treesize reduction 652, result has 15.9 percent of original size [2023-03-30 22:26:19,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 286 treesize of output 873 [2023-03-30 22:26:19,938 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2023-03-30 22:26:19,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 35 [2023-03-30 22:26:20,073 INFO L321 Elim1Store]: treesize reduction 63, result has 17.1 percent of original size [2023-03-30 22:26:20,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 131 treesize of output 42 [2023-03-30 22:26:20,339 INFO L321 Elim1Store]: treesize reduction 79, result has 3.7 percent of original size [2023-03-30 22:26:20,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 131 treesize of output 32 [2023-03-30 22:26:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 22:26:20,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:26:25,500 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse9 (mod (+ c_~ARR_SIZE~0 (* 4294967295 c_main_~index2~0) 4294967295) 4294967296)) (.cse12 (* c_~ARR_SIZE~0 4)) (.cse13 (mod c_main_~index1~0 4294967296))) (let ((.cse7 (< 2147483647 .cse13)) (.cse8 (* .cse12 .cse13)) (.cse0 (<= .cse13 2147483647)) (.cse2 (select |c_#memory_int| |c_main_~#array~0.base|)) (.cse3 (* .cse9 4)) (.cse4 (* .cse12 (+ (- 4294967296) .cse13))) (.cse5 (* c_main_~num~0 c_main_~num~0 c_main_~num~0 c_main_~num~0))) (and (or (and (let ((.cse1 (+ (select (store .cse2 (+ (- 17179869184) .cse3 |c_main_~#array~0.offset| .cse4) .cse5) |c_main_~#array~0.offset|) c_main_~sum~0))) (or .cse0 (= .cse1 1) (= .cse1 0))) (let ((.cse6 (+ (select (store .cse2 (+ (- 17179869184) .cse8 .cse3 |c_main_~#array~0.offset|) .cse5) |c_main_~#array~0.offset|) c_main_~sum~0))) (or (= .cse6 0) (= .cse6 1) .cse7))) (<= .cse9 2147483647)) (or (< 2147483647 .cse9) (and (let ((.cse10 (+ (select (store .cse2 (+ .cse8 .cse3 |c_main_~#array~0.offset|) .cse5) |c_main_~#array~0.offset|) c_main_~sum~0))) (or .cse7 (= .cse10 1) (= .cse10 0))) (let ((.cse11 (+ (select (store .cse2 (+ .cse3 |c_main_~#array~0.offset| .cse4) .cse5) |c_main_~#array~0.offset|) c_main_~sum~0))) (or (= .cse11 1) (= .cse11 0) .cse0))))))) is different from false [2023-03-30 22:26:32,243 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse15 (mod (+ c_~ARR_SIZE~0 (* 4294967295 c_main_~index2~0) 4294967295) 4294967296)) (.cse24 (mod c_main_~index2~0 4294967296))) (let ((.cse12 (< 2147483647 .cse24)) (.cse1 (select |c_#memory_int| |c_main_~#array~0.base|)) (.cse3 (* .cse24 4)) (.cse4 (* .cse15 4)) (.cse5 (* c_main_~num~0 c_main_~num~0 c_main_~num~0 c_main_~num~0)) (.cse6 (* c_~ARR_SIZE~0 4)) (.cse7 (<= .cse24 2147483647))) (and (or (and (or (forall ((v_z_47 Int) (v_ArrVal_60 Int)) (let ((.cse0 (+ (select (let ((.cse2 (* v_z_47 .cse6))) (store (store .cse1 (+ (- 17179869184) .cse2 |c_main_~#array~0.offset| .cse3) v_ArrVal_60) (+ (- 17179869184) .cse4 .cse2 |c_main_~#array~0.offset|) .cse5)) |c_main_~#array~0.offset|) c_main_~sum~0))) (or (= .cse0 0) (< 2147483647 v_z_47) (= .cse0 1) (< v_z_47 0)))) .cse7) (or (forall ((v_z_51 Int) (v_ArrVal_60 Int)) (let ((.cse8 (+ (select (let ((.cse9 (* (+ v_z_51 (- 4294967296)) .cse6))) (store (store .cse1 (+ (- 17179869184) |c_main_~#array~0.offset| .cse9 .cse3) v_ArrVal_60) (+ (- 17179869184) .cse4 |c_main_~#array~0.offset| .cse9) .cse5)) |c_main_~#array~0.offset|) c_main_~sum~0))) (or (<= v_z_51 2147483647) (= .cse8 1) (= .cse8 0) (<= 4294967296 v_z_51)))) .cse7) (or (forall ((v_z_51 Int) (v_ArrVal_60 Int)) (let ((.cse10 (+ (select (let ((.cse11 (* (+ v_z_51 (- 4294967296)) .cse6))) (store (store .cse1 (+ |c_main_~#array~0.offset| .cse11 .cse3) v_ArrVal_60) (+ (- 17179869184) .cse4 |c_main_~#array~0.offset| .cse11) .cse5)) |c_main_~#array~0.offset|) c_main_~sum~0))) (or (= .cse10 1) (<= v_z_51 2147483647) (<= 4294967296 v_z_51) (= .cse10 0)))) .cse12) (or (forall ((v_z_47 Int) (v_ArrVal_60 Int)) (let ((.cse13 (+ (select (let ((.cse14 (* v_z_47 .cse6))) (store (store .cse1 (+ .cse14 |c_main_~#array~0.offset| .cse3) v_ArrVal_60) (+ (- 17179869184) .cse4 .cse14 |c_main_~#array~0.offset|) .cse5)) |c_main_~#array~0.offset|) c_main_~sum~0))) (or (< 2147483647 v_z_47) (= .cse13 0) (< v_z_47 0) (= .cse13 1)))) .cse12)) (<= .cse15 2147483647)) (or (< 2147483647 .cse15) (and (or (forall ((v_z_41 Int) (v_ArrVal_60 Int)) (let ((.cse16 (+ (select (let ((.cse17 (* v_z_41 .cse6))) (store (store .cse1 (+ (- 17179869184) .cse17 |c_main_~#array~0.offset| .cse3) v_ArrVal_60) (+ .cse4 .cse17 |c_main_~#array~0.offset|) .cse5)) |c_main_~#array~0.offset|) c_main_~sum~0))) (or (< v_z_41 0) (= .cse16 0) (< 2147483647 v_z_41) (= .cse16 1)))) .cse7) (or (forall ((v_z_41 Int) (v_ArrVal_60 Int)) (let ((.cse18 (+ (select (let ((.cse19 (* v_z_41 .cse6))) (store (store .cse1 (+ .cse19 |c_main_~#array~0.offset| .cse3) v_ArrVal_60) (+ .cse4 .cse19 |c_main_~#array~0.offset|) .cse5)) |c_main_~#array~0.offset|) c_main_~sum~0))) (or (= .cse18 1) (< v_z_41 0) (= .cse18 0) (< 2147483647 v_z_41)))) .cse12) (or (forall ((v_z_46 Int) (v_ArrVal_60 Int)) (let ((.cse20 (+ (select (let ((.cse21 (* (+ v_z_46 (- 4294967296)) .cse6))) (store (store .cse1 (+ .cse21 |c_main_~#array~0.offset| .cse3) v_ArrVal_60) (+ .cse21 .cse4 |c_main_~#array~0.offset|) .cse5)) |c_main_~#array~0.offset|) c_main_~sum~0))) (or (<= v_z_46 2147483647) (= .cse20 1) (<= 4294967296 v_z_46) (= .cse20 0)))) .cse12) (or (forall ((v_z_46 Int) (v_ArrVal_60 Int)) (let ((.cse22 (+ (select (let ((.cse23 (* (+ v_z_46 (- 4294967296)) .cse6))) (store (store .cse1 (+ .cse23 (- 17179869184) |c_main_~#array~0.offset| .cse3) v_ArrVal_60) (+ .cse23 .cse4 |c_main_~#array~0.offset|) .cse5)) |c_main_~#array~0.offset|) c_main_~sum~0))) (or (<= v_z_46 2147483647) (<= 4294967296 v_z_46) (= .cse22 1) (= .cse22 0)))) .cse7)))))) is different from false