/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-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:25:50,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:25:50,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:25:50,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 01:25:50,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:25:50,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:25:50,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:25:50,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:25:50,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:25:50,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:25:50,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:25:50,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:25:50,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:25:50,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:25:50,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:25:50,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:25:50,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 01:25:50,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:25:50,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:25:50,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:25:50,470 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 01:25:50,496 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:25:50,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:25:50,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:25:50,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:25:50,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:25:50,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:25:50,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:25:50,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:25:50,498 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:25:50,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:25:50,499 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:25:50,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:25:50,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:25:50,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:25:50,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:25:50,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:25:50,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:25:50,499 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:25:50,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:25:50,499 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:25:50,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:25:50,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:25:50,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:25:50,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:25:50,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:25:50,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:25:50,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:25:50,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:25:50,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:25:50,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:25:50,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:25:50,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:25:50,501 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:25:50,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:25:50,501 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:25:50,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:25:50,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:25:50,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:25:50,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:25:50,690 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:25:50,690 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:25:50,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2023-04-02 01:25:51,683 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:25:51,912 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:25:51,913 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2023-04-02 01:25:51,918 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408d74a6f/60f25328e43d425caa7e8876d29d7c21/FLAGefe23f4ad [2023-04-02 01:25:52,313 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408d74a6f/60f25328e43d425caa7e8876d29d7c21 [2023-04-02 01:25:52,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:25:52,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:25:52,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:25:52,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:25:52,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:25:52,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:25:52" (1/1) ... [2023-04-02 01:25:52,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3678f0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:25:52, skipping insertion in model container [2023-04-02 01:25:52,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:25:52" (1/1) ... [2023-04-02 01:25:52,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:25:52,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:25:52,482 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-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1215,1228] [2023-04-02 01:25:52,501 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-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1969,1982] [2023-04-02 01:25:52,505 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-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2490,2503] [2023-04-02 01:25:52,507 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-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3282,3295] [2023-04-02 01:25:52,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:25:52,516 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:25:52,529 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-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1215,1228] [2023-04-02 01:25:52,532 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-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1969,1982] [2023-04-02 01:25:52,534 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-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2490,2503] [2023-04-02 01:25:52,537 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-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3282,3295] [2023-04-02 01:25:52,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:25:52,549 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:25:52,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:25:52 WrapperNode [2023-04-02 01:25:52,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:25:52,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:25:52,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:25:52,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:25:52,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:25:52" (1/1) ... [2023-04-02 01:25:52,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:25:52" (1/1) ... [2023-04-02 01:25:52,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:25:52" (1/1) ... [2023-04-02 01:25:52,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:25:52" (1/1) ... [2023-04-02 01:25:52,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:25:52" (1/1) ... [2023-04-02 01:25:52,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:25:52" (1/1) ... [2023-04-02 01:25:52,586 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:25:52" (1/1) ... [2023-04-02 01:25:52,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:25:52" (1/1) ... [2023-04-02 01:25:52,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:25:52,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:25:52,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:25:52,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:25:52,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:25:52" (1/1) ... [2023-04-02 01:25:52,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:25:52,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:25:52,615 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 01:25:52,616 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 01:25:52,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:25:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:25:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:25:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 01:25:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:25:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:25:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:25:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:25:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:25:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 01:25:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 01:25:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-02 01:25:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:25:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 01:25:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:25:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:25:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:25:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:25:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:25:52,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:25:52,707 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:25:52,709 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:25:52,992 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:25:53,006 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:25:53,006 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 01:25:53,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:25:53 BoogieIcfgContainer [2023-04-02 01:25:53,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:25:53,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:25:53,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:25:53,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:25:53,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:25:52" (1/3) ... [2023-04-02 01:25:53,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1103a6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:25:53, skipping insertion in model container [2023-04-02 01:25:53,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:25:52" (2/3) ... [2023-04-02 01:25:53,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1103a6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:25:53, skipping insertion in model container [2023-04-02 01:25:53,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:25:53" (3/3) ... [2023-04-02 01:25:53,017 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2023-04-02 01:25:53,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:25:53,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-04-02 01:25:53,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:25:53,096 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;@7b28436f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:25:53,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-04-02 01:25:53,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 40 states have internal predecessors, (59), 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 01:25:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-04-02 01:25:53,108 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:25:53,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:25:53,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:25:53,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:25:53,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1079931260, now seen corresponding path program 1 times [2023-04-02 01:25:53,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:25:53,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885569285] [2023-04-02 01:25:53,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:25:53,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:25:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:53,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:25:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:53,436 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 01:25:53,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:25:53,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885569285] [2023-04-02 01:25:53,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885569285] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:25:53,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:25:53,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 01:25:53,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194290619] [2023-04-02 01:25:53,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:25:53,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 01:25:53,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:25:53,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 01:25:53,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 01:25:53,474 INFO L87 Difference]: Start difference. First operand has 45 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 40 states have internal predecessors, (59), 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 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 01:25:53,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:25:53,653 INFO L93 Difference]: Finished difference Result 92 states and 130 transitions. [2023-04-02 01:25:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 01:25:53,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 15 [2023-04-02 01:25:53,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:25:53,661 INFO L225 Difference]: With dead ends: 92 [2023-04-02 01:25:53,662 INFO L226 Difference]: Without dead ends: 47 [2023-04-02 01:25:53,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:25:53,668 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:25:53,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 48 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:25:53,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-02 01:25:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2023-04-02 01:25:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 37 states have internal predecessors, (45), 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 01:25:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2023-04-02 01:25:53,701 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 15 [2023-04-02 01:25:53,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:25:53,703 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2023-04-02 01:25:53,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 01:25:53,703 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2023-04-02 01:25:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 01:25:53,704 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:25:53,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:25:53,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:25:53,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:25:53,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:25:53,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1388406586, now seen corresponding path program 1 times [2023-04-02 01:25:53,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:25:53,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253226533] [2023-04-02 01:25:53,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:25:53,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:25:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:25:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:25:53,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:25:53,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253226533] [2023-04-02 01:25:53,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253226533] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:25:53,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464534215] [2023-04-02 01:25:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:25:53,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:25:53,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:25:53,847 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 01:25:53,848 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 01:25:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:53,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 01:25:53,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:25:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:25:53,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 01:25:53,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464534215] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:25:53,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 01:25:53,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-02 01:25:53,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362622394] [2023-04-02 01:25:53,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:25:53,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 01:25:53,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:25:53,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 01:25:53,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 01:25:53,926 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 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 01:25:53,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:25:53,933 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2023-04-02 01:25:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 01:25:53,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 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 17 [2023-04-02 01:25:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:25:53,934 INFO L225 Difference]: With dead ends: 48 [2023-04-02 01:25:53,934 INFO L226 Difference]: Without dead ends: 38 [2023-04-02 01:25:53,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 01:25:53,935 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:25:53,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 64 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:25:53,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-04-02 01:25:53,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2023-04-02 01:25:53,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.3) internal successors, (39), 32 states have internal predecessors, (39), 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 01:25:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2023-04-02 01:25:53,942 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 17 [2023-04-02 01:25:53,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:25:53,942 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2023-04-02 01:25:53,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 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 01:25:53,942 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2023-04-02 01:25:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 01:25:53,943 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:25:53,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:25:53,951 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 01:25:54,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:25:54,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:25:54,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:25:54,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2068661894, now seen corresponding path program 1 times [2023-04-02 01:25:54,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:25:54,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285259649] [2023-04-02 01:25:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:25:54,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:25:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:25:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:25:54,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:25:54,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285259649] [2023-04-02 01:25:54,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285259649] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:25:54,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:25:54,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 01:25:54,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782586399] [2023-04-02 01:25:54,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:25:54,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 01:25:54,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:25:54,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 01:25:54,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:25:54,258 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 01:25:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:25:54,342 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2023-04-02 01:25:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 01:25:54,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 18 [2023-04-02 01:25:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:25:54,343 INFO L225 Difference]: With dead ends: 57 [2023-04-02 01:25:54,343 INFO L226 Difference]: Without dead ends: 55 [2023-04-02 01:25:54,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-04-02 01:25:54,344 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 40 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:25:54,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 73 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:25:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-04-02 01:25:54,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 38. [2023-04-02 01:25:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 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 01:25:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-04-02 01:25:54,349 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 18 [2023-04-02 01:25:54,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:25:54,349 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-04-02 01:25:54,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 01:25:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-04-02 01:25:54,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 01:25:54,350 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:25:54,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:25:54,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 01:25:54,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:25:54,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:25:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2003985633, now seen corresponding path program 1 times [2023-04-02 01:25:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:25:54,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446885250] [2023-04-02 01:25:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:25:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:25:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:25:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:25:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:25:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446885250] [2023-04-02 01:25:54,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446885250] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:25:54,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:25:54,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 01:25:54,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971363440] [2023-04-02 01:25:54,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:25:54,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 01:25:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:25:54,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 01:25:54,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 01:25:54,389 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 01:25:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:25:54,441 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2023-04-02 01:25:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 01:25:54,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 18 [2023-04-02 01:25:54,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:25:54,442 INFO L225 Difference]: With dead ends: 66 [2023-04-02 01:25:54,442 INFO L226 Difference]: Without dead ends: 45 [2023-04-02 01:25:54,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:25:54,443 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 31 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:25:54,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 39 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:25:54,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-04-02 01:25:54,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2023-04-02 01:25:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.25) internal successors, (40), 34 states have internal predecessors, (40), 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 01:25:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-04-02 01:25:54,447 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 18 [2023-04-02 01:25:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:25:54,448 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-04-02 01:25:54,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 01:25:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-04-02 01:25:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-02 01:25:54,448 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:25:54,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:25:54,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 01:25:54,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:25:54,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:25:54,449 INFO L85 PathProgramCache]: Analyzing trace with hash 354139889, now seen corresponding path program 1 times [2023-04-02 01:25:54,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:25:54,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386370262] [2023-04-02 01:25:54,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:25:54,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:25:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:54,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:25:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:25:54,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:25:54,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386370262] [2023-04-02 01:25:54,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386370262] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:25:54,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:25:54,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 01:25:54,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934281112] [2023-04-02 01:25:54,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:25:54,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 01:25:54,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:25:54,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 01:25:54,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 01:25:54,478 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 01:25:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:25:54,524 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2023-04-02 01:25:54,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 01:25:54,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 19 [2023-04-02 01:25:54,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:25:54,525 INFO L225 Difference]: With dead ends: 60 [2023-04-02 01:25:54,525 INFO L226 Difference]: Without dead ends: 39 [2023-04-02 01:25:54,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:25:54,526 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:25:54,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 40 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:25:54,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-04-02 01:25:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2023-04-02 01:25:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 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 01:25:54,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-04-02 01:25:54,530 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 19 [2023-04-02 01:25:54,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:25:54,530 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-04-02 01:25:54,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 01:25:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-04-02 01:25:54,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 01:25:54,531 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:25:54,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:25:54,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 01:25:54,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:25:54,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:25:54,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1239982183, now seen corresponding path program 1 times [2023-04-02 01:25:54,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:25:54,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143623060] [2023-04-02 01:25:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:25:54,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:25:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:54,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:25:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:25:54,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:25:54,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143623060] [2023-04-02 01:25:54,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143623060] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:25:54,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759596678] [2023-04-02 01:25:54,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:25:54,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:25:54,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:25:54,625 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 01:25:54,641 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 01:25:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:54,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 01:25:54,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:25:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:25:54,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:25:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:25:54,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759596678] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:25:54,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:25:54,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-04-02 01:25:54,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414229101] [2023-04-02 01:25:54,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:25:54,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 01:25:54,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:25:54,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 01:25:54,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-04-02 01:25:54,765 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 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 01:25:54,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:25:54,882 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2023-04-02 01:25:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 01:25:54,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 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 24 [2023-04-02 01:25:54,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:25:54,883 INFO L225 Difference]: With dead ends: 63 [2023-04-02 01:25:54,883 INFO L226 Difference]: Without dead ends: 39 [2023-04-02 01:25:54,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:25:54,884 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:25:54,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 122 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:25:54,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-04-02 01:25:54,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-04-02 01:25:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 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 01:25:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2023-04-02 01:25:54,889 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 24 [2023-04-02 01:25:54,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:25:54,889 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2023-04-02 01:25:54,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 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 01:25:54,889 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2023-04-02 01:25:54,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-02 01:25:54,890 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:25:54,890 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:25:54,910 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 01:25:55,096 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,SelfDestructingSolverStorable5 [2023-04-02 01:25:55,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:25:55,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:25:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1063029217, now seen corresponding path program 2 times [2023-04-02 01:25:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:25:55,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092897736] [2023-04-02 01:25:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:25:55,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:25:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:25:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:25:55,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:25:55,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092897736] [2023-04-02 01:25:55,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092897736] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:25:55,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815484392] [2023-04-02 01:25:55,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:25:55,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:25:55,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:25:55,218 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 01:25:55,219 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 01:25:55,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-04-02 01:25:55,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:25:55,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjunts are in the unsatisfiable core [2023-04-02 01:25:55,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:25:56,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:25:56,977 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:25:56,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:25:56,979 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:25:56,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:25:56,991 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:25:56,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 986 treesize of output 568 [2023-04-02 01:25:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 01:25:57,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 01:25:57,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815484392] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:25:57,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 01:25:57,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2023-04-02 01:25:57,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864946109] [2023-04-02 01:25:57,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:25:57,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 01:25:57,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:25:57,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 01:25:57,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-04-02 01:25:57,439 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 1 states have call successors, (2), 1 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 01:25:57,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:25:57,700 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2023-04-02 01:25:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 01:25:57,700 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 1 states have call successors, (2), 1 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 30 [2023-04-02 01:25:57,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:25:57,701 INFO L225 Difference]: With dead ends: 55 [2023-04-02 01:25:57,701 INFO L226 Difference]: Without dead ends: 34 [2023-04-02 01:25:57,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2023-04-02 01:25:57,702 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:25:57,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 81 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:25:57,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-04-02 01:25:57,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2023-04-02 01:25:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 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 01:25:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2023-04-02 01:25:57,707 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 30 [2023-04-02 01:25:57,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:25:57,707 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2023-04-02 01:25:57,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 1 states have call successors, (2), 1 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 01:25:57,707 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-04-02 01:25:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-02 01:25:57,708 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:25:57,708 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:25:57,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 01:25:57,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:25:57,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:25:57,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:25:57,909 INFO L85 PathProgramCache]: Analyzing trace with hash 754964985, now seen corresponding path program 1 times [2023-04-02 01:25:57,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:25:57,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658424160] [2023-04-02 01:25:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:25:57,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:25:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:25:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:25:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 01:25:58,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:25:58,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658424160] [2023-04-02 01:25:58,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658424160] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:25:58,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:25:58,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 01:25:58,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104834467] [2023-04-02 01:25:58,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:25:58,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 01:25:58,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:25:58,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 01:25:58,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:25:58,003 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 01:25:58,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:25:58,085 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2023-04-02 01:25:58,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 01:25:58,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 31 [2023-04-02 01:25:58,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:25:58,087 INFO L225 Difference]: With dead ends: 38 [2023-04-02 01:25:58,087 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 01:25:58,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-02 01:25:58,088 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:25:58,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 54 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:25:58,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 01:25:58,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 01:25:58,089 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 01:25:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 01:25:58,089 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2023-04-02 01:25:58,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:25:58,089 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 01:25:58,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 01:25:58,089 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 01:25:58,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 01:25:58,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-04-02 01:25:58,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-04-02 01:25:58,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-04-02 01:25:58,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-04-02 01:25:58,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 01:25:58,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 01:25:58,312 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-02 01:25:58,312 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2023-04-02 01:25:58,312 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-02 01:25:58,312 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 6 8) no Hoare annotation was computed. [2023-04-02 01:25:58,312 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-04-02 01:25:58,312 INFO L899 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2023-04-02 01:25:58,313 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-04-02 01:25:58,313 INFO L899 garLoopResultBuilder]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 171) no Hoare annotation was computed. [2023-04-02 01:25:58,313 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 14 200) no Hoare annotation was computed. [2023-04-02 01:25:58,313 INFO L895 garLoopResultBuilder]: At program point L118(lines 30 189) the Hoare annotation is: (let ((.cse2 (mod (+ 4294967295 main_~main__index1~0) 4294967296)) (.cse0 (mod (+ main_~main__index2~0 1) 4294967296))) (and (= main_~__VERIFIER_assert__cond~2 1) (< .cse0 100000) (let ((.cse1 (select |#memory_int| |main_~#main__array~0.base|))) (= (mod (select .cse1 (* .cse0 4)) 4294967296) (mod (select .cse1 (* .cse2 4)) 4294967296))) (< .cse2 .cse0) (= |main_~#main__array~0.offset| 0))) [2023-04-02 01:25:58,313 INFO L895 garLoopResultBuilder]: At program point L52(lines 50 143) the Hoare annotation is: (let ((.cse6 (mod main_~main__index2~0 4294967296))) (let ((.cse0 (< (mod main_~main__index1~0 4294967296) .cse6)) (.cse4 (= main_~__VERIFIER_assert__cond~0 1)) (.cse5 (= |main_~#main__array~0.offset| 0))) (or (let ((.cse3 (mod (+ 4294967295 main_~main__index1~0) 4294967296)) (.cse1 (mod (+ main_~main__index2~0 1) 4294967296))) (and (not (= main_~__VERIFIER_assert__cond~1 0)) (not (= main_~main____CPAchecker_TMP_0~1 0)) .cse0 (< .cse1 100000) (let ((.cse2 (select |#memory_int| |main_~#main__array~0.base|))) (= (mod (select .cse2 (* .cse1 4)) 4294967296) (mod (select .cse2 (* .cse3 4)) 4294967296))) (< .cse3 .cse1) .cse4 .cse5)) (and (< .cse6 100000) (= main_~main____CPAchecker_TMP_0~0 1) .cse0 .cse4 .cse5)))) [2023-04-02 01:25:58,313 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2023-04-02 01:25:58,313 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 143) no Hoare annotation was computed. [2023-04-02 01:25:58,313 INFO L895 garLoopResultBuilder]: At program point $Ultimate##32(lines 104 131) the Hoare annotation is: (let ((.cse3 (= |main_~#main__array~0.offset| 0))) (or (let ((.cse2 (mod (+ 4294967295 main_~main__index1~0) 4294967296)) (.cse0 (mod (+ main_~main__index2~0 1) 4294967296))) (and (< .cse0 100000) (let ((.cse1 (select |#memory_int| |main_~#main__array~0.base|))) (= (mod (select .cse1 (* .cse0 4)) 4294967296) (mod (select .cse1 (* .cse2 4)) 4294967296))) (< .cse2 .cse0) .cse3)) (let ((.cse4 (mod main_~main__index2~0 4294967296))) (and (< .cse4 100000) (< (mod main_~main__index1~0 4294967296) .cse4) (= main_~__VERIFIER_assert__cond~2 1) .cse3)))) [2023-04-02 01:25:58,313 INFO L895 garLoopResultBuilder]: At program point L69(lines 66 92) the Hoare annotation is: (let ((.cse2 (mod (+ 4294967295 main_~main__index1~0) 4294967296)) (.cse0 (mod (+ main_~main__index2~0 1) 4294967296))) (and (not (= main_~main____CPAchecker_TMP_0~1 0)) (< (mod main_~main__index1~0 4294967296) (mod main_~main__index2~0 4294967296)) (< .cse0 100000) (let ((.cse1 (select |#memory_int| |main_~#main__array~0.base|))) (= (mod (select .cse1 (* .cse0 4)) 4294967296) (mod (select .cse1 (* .cse2 4)) 4294967296))) (< .cse2 .cse0) (= main_~__VERIFIER_assert__cond~0 1) (= |main_~#main__array~0.offset| 0))) [2023-04-02 01:25:58,313 INFO L899 garLoopResultBuilder]: For program point L160(lines 160 188) no Hoare annotation was computed. [2023-04-02 01:25:58,313 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 137) no Hoare annotation was computed. [2023-04-02 01:25:58,314 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 194) no Hoare annotation was computed. [2023-04-02 01:25:58,314 INFO L899 garLoopResultBuilder]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2023-04-02 01:25:58,314 INFO L895 garLoopResultBuilder]: At program point L20-3(lines 20 23) the Hoare annotation is: (and (= ~__tmp_155_0~0 |old(~__tmp_155_0~0)|) (= main_~main__loop_entered~0 0) (= |main_~#main__array~0.offset| 0)) [2023-04-02 01:25:58,314 INFO L899 garLoopResultBuilder]: For program point L20-4(lines 20 23) no Hoare annotation was computed. [2023-04-02 01:25:58,314 INFO L899 garLoopResultBuilder]: For program point L111(lines 111 124) no Hoare annotation was computed. [2023-04-02 01:25:58,314 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 177) no Hoare annotation was computed. [2023-04-02 01:25:58,314 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 142) no Hoare annotation was computed. [2023-04-02 01:25:58,314 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-04-02 01:25:58,314 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 14 200) no Hoare annotation was computed. [2023-04-02 01:25:58,314 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 200) the Hoare annotation is: (= ~__tmp_155_0~0 |old(~__tmp_155_0~0)|) [2023-04-02 01:25:58,314 INFO L895 garLoopResultBuilder]: At program point L38(lines 35 151) the Hoare annotation is: (and (= ~__tmp_155_0~0 |old(~__tmp_155_0~0)|) (= main_~main____CPAchecker_TMP_0~0 1) (< (mod main_~main__index1~0 4294967296) (mod main_~main__index2~0 4294967296)) (= main_~main__loop_entered~0 0) (<= main_~main__index2~0 (+ (* (div main_~main__index2~0 4294967296) 4294967296) 99999)) (= |main_~#main__array~0.offset| 0)) [2023-04-02 01:25:58,314 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 183) no Hoare annotation was computed. [2023-04-02 01:25:58,314 INFO L902 garLoopResultBuilder]: At program point L129(lines 101 136) the Hoare annotation is: true [2023-04-02 01:25:58,314 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2023-04-02 01:25:58,314 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 189) no Hoare annotation was computed. [2023-04-02 01:25:58,314 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point L171(line 171) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 97) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L895 garLoopResultBuilder]: At program point L89(lines 64 97) the Hoare annotation is: false [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L895 garLoopResultBuilder]: At program point L148(lines 33 156) the Hoare annotation is: false [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 92) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 156) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 199) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 84) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 136) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 151) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= ~__tmp_155_0~0 |old(~__tmp_155_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_136~0)| ~__return_136~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:25:58,315 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 01:25:58,315 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:25:58,316 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 01:25:58,321 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-04-02 01:25:58,323 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 01:25:58,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 01:25:58 BoogieIcfgContainer [2023-04-02 01:25:58,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 01:25:58,344 INFO L158 Benchmark]: Toolchain (without parser) took 6028.09ms. Allocated memory was 255.9MB in the beginning and 446.7MB in the end (delta: 190.8MB). Free memory was 216.6MB in the beginning and 324.3MB in the end (delta: -107.7MB). Peak memory consumption was 84.5MB. Max. memory is 8.0GB. [2023-04-02 01:25:58,345 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 177.2MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 01:25:58,345 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.32ms. Allocated memory is still 255.9MB. Free memory was 216.4MB in the beginning and 203.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 01:25:58,345 INFO L158 Benchmark]: Boogie Preprocessor took 38.06ms. Allocated memory is still 255.9MB. Free memory was 203.8MB in the beginning and 202.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 01:25:58,345 INFO L158 Benchmark]: RCFGBuilder took 418.18ms. Allocated memory is still 255.9MB. Free memory was 202.2MB in the beginning and 186.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-04-02 01:25:58,345 INFO L158 Benchmark]: TraceAbstraction took 5334.51ms. Allocated memory was 255.9MB in the beginning and 446.7MB in the end (delta: 190.8MB). Free memory was 186.0MB in the beginning and 324.3MB in the end (delta: -138.3MB). Peak memory consumption was 54.1MB. Max. memory is 8.0GB. [2023-04-02 01:25:58,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 177.2MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 231.32ms. Allocated memory is still 255.9MB. Free memory was 216.4MB in the beginning and 203.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.06ms. Allocated memory is still 255.9MB. Free memory was 203.8MB in the beginning and 202.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 418.18ms. Allocated memory is still 255.9MB. Free memory was 202.2MB in the beginning and 186.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5334.51ms. Allocated memory was 255.9MB in the beginning and 446.7MB in the end (delta: 190.8MB). Free memory was 186.0MB in the beginning and 324.3MB in the end (delta: -138.3MB). Peak memory consumption was 54.1MB. 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: 46]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 113]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 171]: 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 5 procedures, 52 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 213 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213 mSDsluCounter, 521 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 332 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 542 IncrementalHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 189 mSDtfsCounter, 542 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 40 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 27 NumberOfFragments, 337 HoareAnnotationTreeSize, 13 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 225 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 243 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 862 SizeOfPredicates, 9 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 36/56 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 4 specifications checked. All of them hold - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((__VERIFIER_assert__cond == 1 && (main__index2 + 1) % 4294967296 < 100000) && unknown-#memory_int-unknown[main__array][(main__index2 + 1) % 4294967296 * 4] % 4294967296 == unknown-#memory_int-unknown[main__array][(4294967295 + main__index1) % 4294967296 * 4] % 4294967296) && (4294967295 + main__index1) % 4294967296 < (main__index2 + 1) % 4294967296) && main__array == 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((__tmp_155_0 == \old(__tmp_155_0) && main____CPAchecker_TMP_0 == 1) && main__index1 % 4294967296 < main__index2 % 4294967296) && main__loop_entered == 0) && main__index2 <= main__index2 / 4294967296 * 4294967296 + 99999) && main__array == 0 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (__tmp_155_0 == \old(__tmp_155_0) && main__loop_entered == 0) && main__array == 0 - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: (((((!(main____CPAchecker_TMP_0 == 0) && main__index1 % 4294967296 < main__index2 % 4294967296) && (main__index2 + 1) % 4294967296 < 100000) && unknown-#memory_int-unknown[main__array][(main__index2 + 1) % 4294967296 * 4] % 4294967296 == unknown-#memory_int-unknown[main__array][(4294967295 + main__index1) % 4294967296 * 4] % 4294967296) && (4294967295 + main__index1) % 4294967296 < (main__index2 + 1) % 4294967296) && __VERIFIER_assert__cond == 1) && main__array == 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (((((((!(__VERIFIER_assert__cond == 0) && !(main____CPAchecker_TMP_0 == 0)) && main__index1 % 4294967296 < main__index2 % 4294967296) && (main__index2 + 1) % 4294967296 < 100000) && unknown-#memory_int-unknown[main__array][(main__index2 + 1) % 4294967296 * 4] % 4294967296 == unknown-#memory_int-unknown[main__array][(4294967295 + main__index1) % 4294967296 * 4] % 4294967296) && (4294967295 + main__index1) % 4294967296 < (main__index2 + 1) % 4294967296) && __VERIFIER_assert__cond == 1) && main__array == 0) || ((((main__index2 % 4294967296 < 100000 && main____CPAchecker_TMP_0 == 1) && main__index1 % 4294967296 < main__index2 % 4294967296) && __VERIFIER_assert__cond == 1) && main__array == 0) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: ((((main__index2 + 1) % 4294967296 < 100000 && unknown-#memory_int-unknown[main__array][(main__index2 + 1) % 4294967296 * 4] % 4294967296 == unknown-#memory_int-unknown[main__array][(4294967295 + main__index1) % 4294967296 * 4] % 4294967296) && (4294967295 + main__index1) % 4294967296 < (main__index2 + 1) % 4294967296) && main__array == 0) || (((main__index2 % 4294967296 < 100000 && main__index1 % 4294967296 < main__index2 % 4294967296) && __VERIFIER_assert__cond == 1) && main__array == 0) RESULT: Ultimate proved your program to be correct! [2023-04-02 01:25:58,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...