/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/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:31:16,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:31:16,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:31:16,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 01:31:16,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 01:31:16,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 01:31:16,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 01:31:16,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 01:31:16,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 01:31:16,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 01:31:16,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 01:31:16,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 01:31:16,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:31:16,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:31:16,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:31:16,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:31:16,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:31:16,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:31:16,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:31:16,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:31:16,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:31:16,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:31:16,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:31:16,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:31:16,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 01:31:16,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 01:31:16,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 01:31:16,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 01:31:16,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 01:31:16,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 01:31:16,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 01:31:16,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 01:31:16,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 01:31:16,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:31:16,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:31:16,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:31:16,412 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 [2023-04-02 01:31:16,440 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:31:16,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:31:16,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:31:16,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:31:16,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:31:16,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:31:16,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:31:16,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:31:16,443 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:31:16,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:31:16,444 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:31:16,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:31:16,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:31:16,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:31:16,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:31:16,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:31:16,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:31:16,445 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:31:16,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:31:16,446 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:31:16,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:31:16,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:31:16,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:31:16,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:31:16,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:31:16,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:31:16,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:31:16,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:31:16,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:31:16,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:31:16,447 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:31:16,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:31:16,448 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:31:16,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:31:16,448 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:31:16,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:31:16,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:31:16,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:31:16,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:31:16,715 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:31:16,715 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:31:16,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2023-04-02 01:31:17,894 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:31:18,112 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:31:18,113 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2023-04-02 01:31:18,124 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bb3f72c2/70075b5fb2034c2895dba2ec46f39b5b/FLAGf9a86f206 [2023-04-02 01:31:18,136 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bb3f72c2/70075b5fb2034c2895dba2ec46f39b5b [2023-04-02 01:31:18,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:31:18,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:31:18,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:31:18,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:31:18,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:31:18,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:31:18" (1/1) ... [2023-04-02 01:31:18,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d63f70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:31:18, skipping insertion in model container [2023-04-02 01:31:18,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:31:18" (1/1) ... [2023-04-02 01:31:18,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:31:18,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:31:18,355 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/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2023-04-02 01:31:18,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:31:18,378 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:31:18,455 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/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2023-04-02 01:31:18,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:31:18,467 WARN L667 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-04-02 01:31:18,471 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:31:18,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:31:18 WrapperNode [2023-04-02 01:31:18,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:31:18,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:31:18,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:31:18,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:31:18,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:31:18" (1/1) ... [2023-04-02 01:31:18,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:31:18" (1/1) ... [2023-04-02 01:31:18,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:31:18" (1/1) ... [2023-04-02 01:31:18,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:31:18" (1/1) ... [2023-04-02 01:31:18,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:31:18" (1/1) ... [2023-04-02 01:31:18,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:31:18" (1/1) ... [2023-04-02 01:31:18,529 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:31:18" (1/1) ... [2023-04-02 01:31:18,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:31:18" (1/1) ... [2023-04-02 01:31:18,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:31:18,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:31:18,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:31:18,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:31:18,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:31:18" (1/1) ... [2023-04-02 01:31:18,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:31:18,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:31:18,582 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) [2023-04-02 01:31:18,598 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 [2023-04-02 01:31:18,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:31:18,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:31:18,625 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:31:18,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:31:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:31:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:31:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:31:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:31:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2023-04-02 01:31:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-04-02 01:31:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:31:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 01:31:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 01:31:18,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:31:18,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 01:31:18,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:31:18,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:31:18,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:31:18,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:31:18,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:31:18,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 01:31:18,749 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:31:18,751 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:31:19,534 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:31:19,539 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:31:19,540 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 01:31:19,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:31:19 BoogieIcfgContainer [2023-04-02 01:31:19,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:31:19,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:31:19,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:31:19,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:31:19,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:31:18" (1/3) ... [2023-04-02 01:31:19,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de5ad51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:31:19, skipping insertion in model container [2023-04-02 01:31:19,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:31:18" (2/3) ... [2023-04-02 01:31:19,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de5ad51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:31:19, skipping insertion in model container [2023-04-02 01:31:19,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:31:19" (3/3) ... [2023-04-02 01:31:19,549 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2023-04-02 01:31:19,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:31:19,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 01:31:19,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:31:19,605 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;@36d97fca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:31:19,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 01:31:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:31:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-02 01:31:19,618 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:31:19,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:31:19,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:31:19,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:31:19,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2001183330, now seen corresponding path program 1 times [2023-04-02 01:31:19,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:31:19,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38734333] [2023-04-02 01:31:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:31:19,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:31:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:31:20,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:31:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:31:20,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:31:20,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:31:20,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38734333] [2023-04-02 01:31:20,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38734333] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:31:20,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:31:20,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 01:31:20,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970593402] [2023-04-02 01:31:20,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:31:20,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 01:31:20,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:31:20,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 01:31:20,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:31:20,292 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:31:20,459 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2023-04-02 01:31:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 01:31:20,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-04-02 01:31:20,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:31:20,469 INFO L225 Difference]: With dead ends: 46 [2023-04-02 01:31:20,469 INFO L226 Difference]: Without dead ends: 24 [2023-04-02 01:31:20,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:31:20,478 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 36 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:31:20,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 33 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:31:20,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-04-02 01:31:20,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2023-04-02 01:31:20,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:20,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-04-02 01:31:20,516 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2023-04-02 01:31:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:31:20,517 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-04-02 01:31:20,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-04-02 01:31:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-02 01:31:20,519 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:31:20,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:31:20,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:31:20,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:31:20,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:31:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2000766256, now seen corresponding path program 1 times [2023-04-02 01:31:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:31:20,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830082622] [2023-04-02 01:31:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:31:20,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:31:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:31:20,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:31:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:31:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:31:20,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:31:20,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830082622] [2023-04-02 01:31:20,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830082622] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:31:20,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:31:20,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 01:31:20,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392927868] [2023-04-02 01:31:20,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:31:20,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 01:31:20,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:31:20,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 01:31:20,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:31:20,765 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:20,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:31:20,872 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-04-02 01:31:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 01:31:20,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-04-02 01:31:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:31:20,873 INFO L225 Difference]: With dead ends: 28 [2023-04-02 01:31:20,873 INFO L226 Difference]: Without dead ends: 26 [2023-04-02 01:31:20,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 01:31:20,874 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:31:20,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 38 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:31:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-04-02 01:31:20,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2023-04-02 01:31:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:20,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-04-02 01:31:20,879 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2023-04-02 01:31:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:31:20,880 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-04-02 01:31:20,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:20,880 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-04-02 01:31:20,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-02 01:31:20,880 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:31:20,881 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:31:20,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 01:31:20,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:31:20,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:31:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1978265494, now seen corresponding path program 1 times [2023-04-02 01:31:20,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:31:20,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358808181] [2023-04-02 01:31:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:31:20,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:31:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:31:21,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:31:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:31:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:31:21,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:31:21,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358808181] [2023-04-02 01:31:21,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358808181] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:31:21,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030818232] [2023-04-02 01:31:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:31:21,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:31:21,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:31:21,152 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) [2023-04-02 01:31:21,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 01:31:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:31:21,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 01:31:21,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:31:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:31:21,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:31:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:31:21,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030818232] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:31:21,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:31:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2023-04-02 01:31:21,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538234666] [2023-04-02 01:31:21,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:31:21,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 01:31:21,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:31:21,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 01:31:21,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-04-02 01:31:21,532 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:21,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:31:21,795 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2023-04-02 01:31:21,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 01:31:21,796 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-04-02 01:31:21,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:31:21,797 INFO L225 Difference]: With dead ends: 53 [2023-04-02 01:31:21,797 INFO L226 Difference]: Without dead ends: 43 [2023-04-02 01:31:21,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-04-02 01:31:21,799 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 50 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 54 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 [2023-04-02 01:31:21,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 54 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:31:21,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-04-02 01:31:21,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2023-04-02 01:31:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2023-04-02 01:31:21,808 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 19 [2023-04-02 01:31:21,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:31:21,809 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2023-04-02 01:31:21,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:21,809 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2023-04-02 01:31:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-04-02 01:31:21,810 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:31:21,810 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:31:21,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 01:31:22,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:31:22,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:31:22,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:31:22,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1281324674, now seen corresponding path program 2 times [2023-04-02 01:31:22,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:31:22,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292828482] [2023-04-02 01:31:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:31:22,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:31:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:31:22,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:31:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:31:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:31:22,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:31:22,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292828482] [2023-04-02 01:31:22,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292828482] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:31:22,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296593485] [2023-04-02 01:31:22,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:31:22,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:31:22,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:31:22,437 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) [2023-04-02 01:31:22,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 01:31:22,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:31:22,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:31:22,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-02 01:31:22,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:31:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:31:22,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:31:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:31:22,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296593485] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:31:22,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:31:22,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2023-04-02 01:31:22,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596597273] [2023-04-02 01:31:22,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:31:22,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 01:31:22,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:31:22,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 01:31:22,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-04-02 01:31:22,939 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 15 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:23,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:31:23,571 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2023-04-02 01:31:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 01:31:23,571 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 15 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2023-04-02 01:31:23,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:31:23,572 INFO L225 Difference]: With dead ends: 89 [2023-04-02 01:31:23,572 INFO L226 Difference]: Without dead ends: 79 [2023-04-02 01:31:23,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2023-04-02 01:31:23,574 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 107 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:31:23,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 137 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:31:23,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-04-02 01:31:23,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2023-04-02 01:31:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:23,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2023-04-02 01:31:23,597 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 37 [2023-04-02 01:31:23,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:31:23,597 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2023-04-02 01:31:23,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 15 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2023-04-02 01:31:23,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 01:31:23,603 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:31:23,605 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:31:23,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 01:31:23,806 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,SelfDestructingSolverStorable3 [2023-04-02 01:31:23,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:31:23,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:31:23,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1629405362, now seen corresponding path program 3 times [2023-04-02 01:31:23,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:31:23,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231257032] [2023-04-02 01:31:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:31:23,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:31:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:31:24,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:31:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:31:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 20 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:31:24,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:31:24,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231257032] [2023-04-02 01:31:24,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231257032] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:31:24,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388749839] [2023-04-02 01:31:24,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:31:24,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:31:24,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:31:24,406 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) [2023-04-02 01:31:24,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 01:31:24,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 01:31:24,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:31:24,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 01:31:24,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:31:24,869 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:31:24,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 17 [2023-04-02 01:31:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 56 proven. 39 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-04-02 01:31:25,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:31:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 20 proven. 75 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-04-02 01:31:26,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388749839] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:31:26,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:31:26,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 27 [2023-04-02 01:31:26,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058493224] [2023-04-02 01:31:26,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:31:26,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-04-02 01:31:26,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:31:26,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-04-02 01:31:26,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2023-04-02 01:31:26,336 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 27 states, 27 states have (on average 3.814814814814815) internal successors, (103), 26 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:27,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:31:27,751 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2023-04-02 01:31:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-02 01:31:27,751 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.814814814814815) internal successors, (103), 26 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2023-04-02 01:31:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:31:27,752 INFO L225 Difference]: With dead ends: 94 [2023-04-02 01:31:27,752 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 01:31:27,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=584, Invalid=2278, Unknown=0, NotChecked=0, Total=2862 [2023-04-02 01:31:27,754 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 176 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 01:31:27,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 277 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 01:31:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 01:31:27,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 01:31:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-04-02 01:31:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 01:31:27,756 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2023-04-02 01:31:27,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:31:27,756 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 01:31:27,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.814814814814815) internal successors, (103), 26 states have internal predecessors, (103), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:31:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 01:31:27,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 01:31:27,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 01:31:27,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 01:31:27,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:31:27,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 01:31:28,283 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-02 01:31:28,284 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2023-04-02 01:31:28,284 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-02 01:31:28,284 INFO L899 garLoopResultBuilder]: For program point L161(lines 161 224) no Hoare annotation was computed. [2023-04-02 01:31:28,284 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 133 225) no Hoare annotation was computed. [2023-04-02 01:31:28,284 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 217) no Hoare annotation was computed. [2023-04-02 01:31:28,285 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 222) no Hoare annotation was computed. [2023-04-02 01:31:28,285 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 133 225) no Hoare annotation was computed. [2023-04-02 01:31:28,285 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 133 225) the Hoare annotation is: (or (not (= |old(~Id_MCDC_93~0)| 0)) (= ~Id_MCDC_93~0 0)) [2023-04-02 01:31:28,285 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 209) no Hoare annotation was computed. [2023-04-02 01:31:28,285 INFO L899 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2023-04-02 01:31:28,285 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2023-04-02 01:31:28,285 INFO L899 garLoopResultBuilder]: For program point L191(lines 191 210) no Hoare annotation was computed. [2023-04-02 01:31:28,286 INFO L895 garLoopResultBuilder]: At program point L185(lines 182 217) the Hoare annotation is: (let ((.cse0 (= main_~Id_MCDC_89____CPAchecker_TMP_1~0 1)) (.cse1 (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0))) (or (not (= |old(~Id_MCDC_93~0)| 0)) (and .cse0 (< (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296) 42) (< (mod ~Id_MCDC_93~0 4294967296) 42) .cse1 (= ~Id_MCDC_93~0 main_~Id_MCDC_89__Id_MCDC_96~0)) (and .cse0 (= ~Id_MCDC_93~0 0) (= main_~Id_MCDC_89__Id_MCDC_96~0 0) .cse1))) [2023-04-02 01:31:28,286 INFO L895 garLoopResultBuilder]: At program point L175(lines 167 223) the Hoare annotation is: (let ((.cse0 (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0))) (or (not (= |old(~Id_MCDC_93~0)| 0)) (and (= ~Id_MCDC_93~0 0) (= main_~Id_MCDC_89__Id_MCDC_96~0 0) .cse0) (let ((.cse1 (mod (+ 4294967295 main_~Id_MCDC_89__Id_MCDC_96~0) 4294967296)) (.cse2 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296))) (and (< .cse1 42) (not (= 41 .cse2)) (not (= 41 .cse1)) (< .cse2 42) .cse0)) (and (<= main_~Id_MCDC_89__Id_MCDC_96~0 1) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 1) (<= 1 main_~Id_MCDC_89__Id_MCDC_96~0) .cse0))) [2023-04-02 01:31:28,286 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:31:28,286 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 01:31:28,286 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:31:28,286 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:31:28,287 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (= ~Id_MCDC_93~0 0) [2023-04-02 01:31:28,287 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:31:28,287 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 01:31:28,290 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-04-02 01:31:28,291 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 01:31:28,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 01:31:28 BoogieIcfgContainer [2023-04-02 01:31:28,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 01:31:28,323 INFO L158 Benchmark]: Toolchain (without parser) took 10184.49ms. Allocated memory was 296.7MB in the beginning and 399.5MB in the end (delta: 102.8MB). Free memory was 248.5MB in the beginning and 262.4MB in the end (delta: -13.9MB). Peak memory consumption was 89.8MB. Max. memory is 8.0GB. [2023-04-02 01:31:28,324 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 134.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 01:31:28,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.97ms. Allocated memory is still 296.7MB. Free memory was 248.5MB in the beginning and 232.1MB in the end (delta: 16.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-04-02 01:31:28,324 INFO L158 Benchmark]: Boogie Preprocessor took 75.05ms. Allocated memory is still 296.7MB. Free memory was 232.1MB in the beginning and 228.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-04-02 01:31:28,324 INFO L158 Benchmark]: RCFGBuilder took 993.38ms. Allocated memory is still 296.7MB. Free memory was 228.5MB in the beginning and 213.5MB in the end (delta: 15.0MB). Peak memory consumption was 41.6MB. Max. memory is 8.0GB. [2023-04-02 01:31:28,325 INFO L158 Benchmark]: TraceAbstraction took 8780.12ms. Allocated memory was 296.7MB in the beginning and 399.5MB in the end (delta: 102.8MB). Free memory was 213.0MB in the beginning and 262.4MB in the end (delta: -49.4MB). Peak memory consumption was 53.4MB. Max. memory is 8.0GB. [2023-04-02 01:31:28,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 134.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 331.97ms. Allocated memory is still 296.7MB. Free memory was 248.5MB in the beginning and 232.1MB in the end (delta: 16.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 75.05ms. Allocated memory is still 296.7MB. Free memory was 232.1MB in the beginning and 228.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 993.38ms. Allocated memory is still 296.7MB. Free memory was 228.5MB in the beginning and 213.5MB in the end (delta: 15.0MB). Peak memory consumption was 41.6MB. Max. memory is 8.0GB. * TraceAbstraction took 8780.12ms. Allocated memory was 296.7MB in the beginning and 399.5MB in the end (delta: 102.8MB). Free memory was 213.0MB in the beginning and 262.4MB in the end (delta: -49.4MB). Peak memory consumption was 53.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 193]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.7s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 380 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 380 mSDsluCounter, 539 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 460 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 929 IncrementalHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 79 mSDtfsCounter, 929 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 353 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=4, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 32 NumberOfFragments, 164 HoareAnnotationTreeSize, 6 FomulaSimplifications, 628 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 991 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 284 NumberOfCodeBlocks, 236 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 402 ConstructedInterpolants, 55 QuantifiedInterpolants, 3998 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1825 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 576/1143 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: (!(\old(Id_MCDC_93) == 0) || ((((Id_MCDC_89____CPAchecker_TMP_1 == 1 && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && Id_MCDC_93 % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96)) || (((Id_MCDC_89____CPAchecker_TMP_1 == 1 && Id_MCDC_93 == 0) && Id_MCDC_89__Id_MCDC_96 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: ((!(\old(Id_MCDC_93) == 0) || ((Id_MCDC_93 == 0 && Id_MCDC_89__Id_MCDC_96 == 0) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || (((((4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296 < 42 && !(41 == (Id_MCDC_93 + 4294967295) % 4294967296)) && !(41 == (4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296)) && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || ((((Id_MCDC_89__Id_MCDC_96 <= 1 && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 1) && 1 <= Id_MCDC_89__Id_MCDC_96) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) RESULT: Ultimate proved your program to be correct! [2023-04-02 01:31:28,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...