/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 16:44:02,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 16:44:02,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 16:44:02,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-14 16:44:02,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-14 16:44:02,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-14 16:44:02,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-14 16:44:02,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-14 16:44:02,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-14 16:44:02,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-14 16:44:02,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-14 16:44:02,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-14 16:44:02,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 16:44:02,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 16:44:02,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 16:44:02,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 16:44:02,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 16:44:02,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 16:44:02,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 16:44:02,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 16:44:02,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 16:44:02,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 16:44:02,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 16:44:02,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 16:44:02,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-14 16:44:02,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-14 16:44:02,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-14 16:44:02,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-14 16:44:02,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-14 16:44:02,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-14 16:44:02,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-14 16:44:02,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-14 16:44:02,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-14 16:44:02,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-14 16:44:02,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-14 16:44:02,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-14 16:44:02,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-14 16:44:02,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-14 16:44:02,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 16:44:02,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 16:44:02,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 16:44:02,288 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 [2022-02-14 16:44:02,319 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 16:44:02,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 16:44:02,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-14 16:44:02,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-14 16:44:02,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-14 16:44:02,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-14 16:44:02,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-14 16:44:02,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-14 16:44:02,322 INFO L138 SettingsManager]: * Use SBE=true [2022-02-14 16:44:02,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 16:44:02,322 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 16:44:02,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 16:44:02,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 16:44:02,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 16:44:02,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 16:44:02,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 16:44:02,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 16:44:02,323 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 16:44:02,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 16:44:02,323 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 16:44:02,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 16:44:02,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 16:44:02,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 16:44:02,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 16:44:02,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 16:44:02,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 16:44:02,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-14 16:44:02,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-14 16:44:02,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 16:44:02,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-14 16:44:02,325 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-14 16:44:02,325 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-14 16:44:02,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-14 16:44:02,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 16:44:02,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 16:44:02,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 16:44:02,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 16:44:02,544 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 16:44:02,546 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 16:44:02,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i [2022-02-14 16:44:02,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4c7cf4b6/506aeffdbc6f4f9cb29b12594426d729/FLAG0ccbac432 [2022-02-14 16:44:02,881 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 16:44:02,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i [2022-02-14 16:44:02,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4c7cf4b6/506aeffdbc6f4f9cb29b12594426d729/FLAG0ccbac432 [2022-02-14 16:44:03,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4c7cf4b6/506aeffdbc6f4f9cb29b12594426d729 [2022-02-14 16:44:03,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 16:44:03,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-14 16:44:03,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 16:44:03,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 16:44:03,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 16:44:03,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 04:44:03" (1/1) ... [2022-02-14 16:44:03,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b58818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 04:44:03, skipping insertion in model container [2022-02-14 16:44:03,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 04:44:03" (1/1) ... [2022-02-14 16:44:03,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 16:44:03,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 16:44:03,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i[873,886] [2022-02-14 16:44:03,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 16:44:03,508 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 16:44:03,517 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i[873,886] [2022-02-14 16:44:03,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 16:44:03,532 INFO L208 MainTranslator]: Completed translation [2022-02-14 16:44:03,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 04:44:03 WrapperNode [2022-02-14 16:44:03,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 16:44:03,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 16:44:03,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 16:44:03,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 16:44:03,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 04:44:03" (1/1) ... [2022-02-14 16:44:03,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 04:44:03" (1/1) ... [2022-02-14 16:44:03,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 04:44:03" (1/1) ... [2022-02-14 16:44:03,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 04:44:03" (1/1) ... [2022-02-14 16:44:03,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 04:44:03" (1/1) ... [2022-02-14 16:44:03,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 04:44:03" (1/1) ... [2022-02-14 16:44:03,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 04:44:03" (1/1) ... [2022-02-14 16:44:03,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 16:44:03,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 16:44:03,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 16:44:03,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 16:44:03,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 04:44:03" (1/1) ... [2022-02-14 16:44:03,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 16:44:03,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 16:44:03,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-14 16:44:03,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-14 16:44:03,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 16:44:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 16:44:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 16:44:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 16:44:03,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 16:44:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 16:44:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-14 16:44:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-14 16:44:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 16:44:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 16:44:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 16:44:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-14 16:44:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 16:44:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 16:44:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 16:44:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 16:44:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 16:44:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 16:44:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 16:44:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 16:44:03,690 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 16:44:03,691 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 16:44:03,772 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 16:44:03,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 16:44:03,776 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 16:44:03,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 04:44:03 BoogieIcfgContainer [2022-02-14 16:44:03,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 16:44:03,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 16:44:03,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 16:44:03,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 16:44:03,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 04:44:03" (1/3) ... [2022-02-14 16:44:03,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f222b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 04:44:03, skipping insertion in model container [2022-02-14 16:44:03,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 04:44:03" (2/3) ... [2022-02-14 16:44:03,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f222b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 04:44:03, skipping insertion in model container [2022-02-14 16:44:03,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 04:44:03" (3/3) ... [2022-02-14 16:44:03,789 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark23_conjunctive.i [2022-02-14 16:44:03,792 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-14 16:44:03,792 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 16:44:03,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 16:44:03,825 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-14 16:44:03,825 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 16:44:03,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-14 16:44:03,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 16:44:03,838 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 16:44:03,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 16:44:03,839 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 16:44:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 16:44:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2022-02-14 16:44:03,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 16:44:03,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456627459] [2022-02-14 16:44:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 16:44:03,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 16:44:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:03,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 16:44:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:03,952 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 16:44:03,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456627459] [2022-02-14 16:44:03,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456627459] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 16:44:03,952 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 16:44:03,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-14 16:44:03,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118399388] [2022-02-14 16:44:03,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 16:44:03,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-14 16:44:03,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 16:44:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-14 16:44:03,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-14 16:44:03,995 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:04,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 16:44:04,074 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-02-14 16:44:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-14 16:44:04,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 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 12 [2022-02-14 16:44:04,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 16:44:04,079 INFO L225 Difference]: With dead ends: 33 [2022-02-14 16:44:04,079 INFO L226 Difference]: Without dead ends: 14 [2022-02-14 16:44:04,081 INFO L932 BasicCegarLoop]: 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 [2022-02-14 16:44:04,083 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 16:44:04,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 16:44:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-14 16:44:04,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-14 16:44:04,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:04,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-02-14 16:44:04,103 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-02-14 16:44:04,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 16:44:04,103 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-02-14 16:44:04,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:04,103 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-02-14 16:44:04,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-14 16:44:04,104 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 16:44:04,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 16:44:04,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 16:44:04,104 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 16:44:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 16:44:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash -828987386, now seen corresponding path program 1 times [2022-02-14 16:44:04,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 16:44:04,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994544123] [2022-02-14 16:44:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 16:44:04,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 16:44:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 16:44:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:04,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 16:44:04,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994544123] [2022-02-14 16:44:04,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994544123] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 16:44:04,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903153751] [2022-02-14 16:44:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 16:44:04,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:04,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 16:44:04,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 16:44:04,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-14 16:44:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:04,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-14 16:44:04,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 16:44:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:04,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 16:44:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:04,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903153751] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 16:44:04,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 16:44:04,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-02-14 16:44:04,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616573458] [2022-02-14 16:44:04,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 16:44:04,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-14 16:44:04,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 16:44:04,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-14 16:44:04,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-14 16:44:04,308 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 16:44:04,377 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-02-14 16:44:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-14 16:44:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-02-14 16:44:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 16:44:04,378 INFO L225 Difference]: With dead ends: 22 [2022-02-14 16:44:04,378 INFO L226 Difference]: Without dead ends: 17 [2022-02-14 16:44:04,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-02-14 16:44:04,380 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 16:44:04,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 19 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 16:44:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-02-14 16:44:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-02-14 16:44:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:04,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-02-14 16:44:04,383 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2022-02-14 16:44:04,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 16:44:04,384 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-02-14 16:44:04,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:04,384 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-02-14 16:44:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-14 16:44:04,384 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 16:44:04,384 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 16:44:04,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-14 16:44:04,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:04,600 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 16:44:04,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 16:44:04,601 INFO L85 PathProgramCache]: Analyzing trace with hash 480105496, now seen corresponding path program 2 times [2022-02-14 16:44:04,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 16:44:04,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248985607] [2022-02-14 16:44:04,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 16:44:04,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 16:44:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:04,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 16:44:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:04,700 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 16:44:04,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248985607] [2022-02-14 16:44:04,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248985607] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 16:44:04,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864325202] [2022-02-14 16:44:04,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-14 16:44:04,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:04,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 16:44:04,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 16:44:04,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-14 16:44:04,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-14 16:44:04,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 16:44:04,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-14 16:44:04,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 16:44:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:04,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 16:44:04,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:04,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864325202] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 16:44:04,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 16:44:04,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-02-14 16:44:04,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629296500] [2022-02-14 16:44:04,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 16:44:04,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-14 16:44:04,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 16:44:04,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-14 16:44:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-02-14 16:44:04,866 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 16:44:04,997 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-02-14 16:44:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 16:44:04,997 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-02-14 16:44:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 16:44:04,998 INFO L225 Difference]: With dead ends: 28 [2022-02-14 16:44:04,998 INFO L226 Difference]: Without dead ends: 23 [2022-02-14 16:44:04,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2022-02-14 16:44:05,001 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 16:44:05,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 16:44:05,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-14 16:44:05,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-02-14 16:44:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-02-14 16:44:05,012 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2022-02-14 16:44:05,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 16:44:05,012 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-02-14 16:44:05,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:05,012 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-02-14 16:44:05,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-14 16:44:05,013 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 16:44:05,013 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 16:44:05,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-14 16:44:05,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-14 16:44:05,229 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 16:44:05,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 16:44:05,230 INFO L85 PathProgramCache]: Analyzing trace with hash 140881240, now seen corresponding path program 3 times [2022-02-14 16:44:05,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 16:44:05,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895688482] [2022-02-14 16:44:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 16:44:05,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 16:44:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:05,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 16:44:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:05,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 16:44:05,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895688482] [2022-02-14 16:44:05,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895688482] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 16:44:05,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019824578] [2022-02-14 16:44:05,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-14 16:44:05,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:05,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 16:44:05,372 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 16:44:05,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-14 16:44:05,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-14 16:44:05,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 16:44:05,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-14 16:44:05,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 16:44:05,445 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:05,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 16:44:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:05,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019824578] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 16:44:05,613 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 16:44:05,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 25 [2022-02-14 16:44:05,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924647498] [2022-02-14 16:44:05,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 16:44:05,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-14 16:44:05,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 16:44:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-14 16:44:05,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2022-02-14 16:44:05,614 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 25 states, 25 states have (on average 1.24) internal successors, (31), 24 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:05,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 16:44:05,899 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-02-14 16:44:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-14 16:44:05,900 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 24 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-14 16:44:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 16:44:05,900 INFO L225 Difference]: With dead ends: 40 [2022-02-14 16:44:05,901 INFO L226 Difference]: Without dead ends: 35 [2022-02-14 16:44:05,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2022-02-14 16:44:05,902 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 16:44:05,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 16:44:05,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-14 16:44:05,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-02-14 16:44:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-02-14 16:44:05,913 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 22 [2022-02-14 16:44:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 16:44:05,913 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-02-14 16:44:05,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 24 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-02-14 16:44:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-14 16:44:05,914 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 16:44:05,914 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 16:44:05,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-14 16:44:06,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:06,116 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 16:44:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 16:44:06,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1329696728, now seen corresponding path program 4 times [2022-02-14 16:44:06,117 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 16:44:06,117 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583230494] [2022-02-14 16:44:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 16:44:06,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 16:44:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:06,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 16:44:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:06,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 16:44:06,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583230494] [2022-02-14 16:44:06,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583230494] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 16:44:06,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410073910] [2022-02-14 16:44:06,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-14 16:44:06,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:06,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 16:44:06,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 16:44:06,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-14 16:44:06,481 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-14 16:44:06,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 16:44:06,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-14 16:44:06,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 16:44:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:06,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 16:44:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:07,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410073910] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 16:44:07,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 16:44:07,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 49 [2022-02-14 16:44:07,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779554344] [2022-02-14 16:44:07,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 16:44:07,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-14 16:44:07,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 16:44:07,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-14 16:44:07,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2022-02-14 16:44:07,126 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 48 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:07,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 16:44:07,988 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2022-02-14 16:44:07,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-14 16:44:07,989 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 48 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-02-14 16:44:07,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 16:44:07,990 INFO L225 Difference]: With dead ends: 64 [2022-02-14 16:44:07,990 INFO L226 Difference]: Without dead ends: 59 [2022-02-14 16:44:07,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2022-02-14 16:44:07,993 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 16:44:07,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 16:44:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-14 16:44:07,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-02-14 16:44:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-02-14 16:44:07,999 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 34 [2022-02-14 16:44:07,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 16:44:07,999 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-02-14 16:44:07,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 48 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:07,999 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-02-14 16:44:08,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-14 16:44:08,000 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 16:44:08,000 INFO L514 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 16:44:08,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-14 16:44:08,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:08,216 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 16:44:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 16:44:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash -187034408, now seen corresponding path program 5 times [2022-02-14 16:44:08,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 16:44:08,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29613494] [2022-02-14 16:44:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 16:44:08,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 16:44:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:09,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 16:44:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:09,009 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 16:44:09,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29613494] [2022-02-14 16:44:09,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29613494] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 16:44:09,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856454845] [2022-02-14 16:44:09,009 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-14 16:44:09,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:09,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 16:44:09,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 16:44:09,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-14 16:44:09,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2022-02-14 16:44:09,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 16:44:09,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 48 conjunts are in the unsatisfiable core [2022-02-14 16:44:09,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 16:44:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:09,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 16:44:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:11,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856454845] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 16:44:11,139 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 16:44:11,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 97 [2022-02-14 16:44:11,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972111040] [2022-02-14 16:44:11,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 16:44:11,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-02-14 16:44:11,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 16:44:11,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-02-14 16:44:11,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2022-02-14 16:44:11,143 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 96 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 16:44:13,946 INFO L93 Difference]: Finished difference Result 112 states and 159 transitions. [2022-02-14 16:44:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-14 16:44:13,946 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 96 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-02-14 16:44:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 16:44:13,947 INFO L225 Difference]: With dead ends: 112 [2022-02-14 16:44:13,947 INFO L226 Difference]: Without dead ends: 107 [2022-02-14 16:44:13,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5452 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2022-02-14 16:44:13,954 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-14 16:44:13,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 19 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-14 16:44:13,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-02-14 16:44:13,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-02-14 16:44:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0098039215686274) internal successors, (103), 102 states have internal predecessors, (103), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2022-02-14 16:44:13,968 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 58 [2022-02-14 16:44:13,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 16:44:13,971 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2022-02-14 16:44:13,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 96 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:13,973 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2022-02-14 16:44:13,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-02-14 16:44:13,974 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 16:44:13,974 INFO L514 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 16:44:13,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-14 16:44:14,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:14,175 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 16:44:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 16:44:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash -49406248, now seen corresponding path program 6 times [2022-02-14 16:44:14,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 16:44:14,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300686109] [2022-02-14 16:44:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 16:44:14,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 16:44:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:16,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 16:44:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:16,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 16:44:16,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300686109] [2022-02-14 16:44:16,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300686109] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 16:44:16,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878352447] [2022-02-14 16:44:16,733 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-14 16:44:16,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:16,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 16:44:16,734 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 16:44:16,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-14 16:44:16,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2022-02-14 16:44:16,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 16:44:16,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 96 conjunts are in the unsatisfiable core [2022-02-14 16:44:16,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 16:44:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:17,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 16:44:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:17,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878352447] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 16:44:17,598 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 16:44:17,598 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97, 97] total 103 [2022-02-14 16:44:17,598 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262008489] [2022-02-14 16:44:17,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 16:44:17,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-14 16:44:17,599 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 16:44:17,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-14 16:44:17,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2022-02-14 16:44:17,601 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 103 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 102 states have internal predecessors, (110), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:20,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 16:44:20,921 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2022-02-14 16:44:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-14 16:44:20,921 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 102 states have internal predecessors, (110), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2022-02-14 16:44:20,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 16:44:20,924 INFO L225 Difference]: With dead ends: 118 [2022-02-14 16:44:20,924 INFO L226 Difference]: Without dead ends: 113 [2022-02-14 16:44:20,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5055 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2022-02-14 16:44:20,928 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 16:44:20,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 16:44:20,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-02-14 16:44:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-02-14 16:44:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0092592592592593) internal successors, (109), 108 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2022-02-14 16:44:20,936 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 106 [2022-02-14 16:44:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 16:44:20,937 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2022-02-14 16:44:20,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 102 states have internal predecessors, (110), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:20,937 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2022-02-14 16:44:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-02-14 16:44:20,938 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 16:44:20,938 INFO L514 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 16:44:20,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-14 16:44:21,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:21,138 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 16:44:21,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 16:44:21,139 INFO L85 PathProgramCache]: Analyzing trace with hash 245557272, now seen corresponding path program 7 times [2022-02-14 16:44:21,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 16:44:21,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257182348] [2022-02-14 16:44:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 16:44:21,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 16:44:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:24,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 16:44:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:24,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 16:44:24,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257182348] [2022-02-14 16:44:24,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257182348] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 16:44:24,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173297354] [2022-02-14 16:44:24,870 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-14 16:44:24,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:24,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 16:44:24,871 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 16:44:24,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-14 16:44:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:24,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 205 conjunts are in the unsatisfiable core [2022-02-14 16:44:24,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 16:44:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:25,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 16:44:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:26,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173297354] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 16:44:26,166 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 16:44:26,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105, 105] total 108 [2022-02-14 16:44:26,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584914014] [2022-02-14 16:44:26,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 16:44:26,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-02-14 16:44:26,167 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 16:44:26,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-02-14 16:44:26,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=11341, Unknown=0, NotChecked=0, Total=11556 [2022-02-14 16:44:26,168 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand has 108 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 105 states have internal predecessors, (111), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 16:44:33,014 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2022-02-14 16:44:33,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-14 16:44:33,015 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 105 states have internal predecessors, (111), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2022-02-14 16:44:33,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 16:44:33,015 INFO L225 Difference]: With dead ends: 119 [2022-02-14 16:44:33,015 INFO L226 Difference]: Without dead ends: 114 [2022-02-14 16:44:33,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 219 SyntacticMatches, 5 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5457 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=632, Invalid=43678, Unknown=0, NotChecked=0, Total=44310 [2022-02-14 16:44:33,018 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 11234 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 11338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 11234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-14 16:44:33,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 533 Invalid, 11338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 11234 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-14 16:44:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-02-14 16:44:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-02-14 16:44:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.0091743119266054) internal successors, (110), 109 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2022-02-14 16:44:33,026 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2022-02-14 16:44:33,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 16:44:33,027 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2022-02-14 16:44:33,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 105 states have internal predecessors, (111), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:33,027 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2022-02-14 16:44:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-14 16:44:33,028 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 16:44:33,028 INFO L514 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 16:44:33,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-14 16:44:33,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 16:44:33,260 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 16:44:33,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 16:44:33,260 INFO L85 PathProgramCache]: Analyzing trace with hash -942270330, now seen corresponding path program 8 times [2022-02-14 16:44:33,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 16:44:33,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481397652] [2022-02-14 16:44:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 16:44:33,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 16:44:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 16:44:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 16:44:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 5151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 16:44:36,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 16:44:36,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481397652] [2022-02-14 16:44:36,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481397652] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 16:44:36,195 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 16:44:36,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [] total 104 [2022-02-14 16:44:36,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798914347] [2022-02-14 16:44:36,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 16:44:36,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-14 16:44:36,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 16:44:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-14 16:44:36,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2022-02-14 16:44:36,198 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand has 104 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 103 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 16:44:38,322 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2022-02-14 16:44:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-14 16:44:38,322 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 103 states have internal predecessors, (109), 2 states have call successors, (3), 3 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 113 [2022-02-14 16:44:38,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 16:44:38,323 INFO L225 Difference]: With dead ends: 114 [2022-02-14 16:44:38,323 INFO L226 Difference]: Without dead ends: 0 [2022-02-14 16:44:38,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5050 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2022-02-14 16:44:38,325 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-14 16:44:38,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-14 16:44:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-14 16:44:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-14 16:44:38,326 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) [2022-02-14 16:44:38,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-14 16:44:38,326 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2022-02-14 16:44:38,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 16:44:38,326 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-14 16:44:38,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 103 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 16:44:38,326 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-14 16:44:38,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-14 16:44:38,328 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 16:44:38,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-14 16:44:38,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-14 16:44:39,498 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2022-02-14 16:44:39,498 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2022-02-14 16:44:39,498 INFO L858 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-02-14 16:44:39,499 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 19 29) the Hoare annotation is: true [2022-02-14 16:44:39,499 INFO L858 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2022-02-14 16:44:39,499 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 19 29) no Hoare annotation was computed. [2022-02-14 16:44:39,499 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-02-14 16:44:39,500 INFO L854 garLoopResultBuilder]: At program point L23-2(lines 23 26) the Hoare annotation is: (or (and (<= main_~j~0 190) (<= 190 main_~j~0) (<= 95 main_~i~0) (< main_~i~0 96)) (and (<= 38 main_~i~0) (<= 76 main_~j~0) (<= main_~i~0 38) (<= main_~j~0 76)) (and (<= main_~j~0 88) (<= 88 main_~j~0) (<= 44 main_~i~0) (<= main_~i~0 44)) (and (<= main_~j~0 130) (<= 130 main_~j~0) (<= 65 main_~i~0) (<= main_~i~0 65)) (and (<= main_~i~0 53) (<= 53 main_~i~0) (<= 106 main_~j~0) (<= main_~j~0 106)) (and (<= 86 main_~i~0) (<= main_~i~0 86) (<= 172 main_~j~0) (<= main_~j~0 172)) (and (<= main_~i~0 93) (<= 93 main_~i~0) (<= 186 main_~j~0) (<= main_~j~0 186)) (and (<= main_~j~0 72) (<= 72 main_~j~0) (<= 36 main_~i~0) (<= main_~i~0 36)) (and (<= main_~j~0 12) (<= 12 main_~j~0) (<= main_~i~0 6) (<= 6 main_~i~0)) (and (<= 134 main_~j~0) (<= 67 main_~i~0) (<= main_~i~0 67) (<= main_~j~0 134)) (and (<= 90 main_~i~0) (<= main_~j~0 180) (<= main_~i~0 90) (<= 180 main_~j~0)) (and (<= 148 main_~j~0) (<= main_~j~0 148) (<= 74 main_~i~0) (<= main_~i~0 74)) (and (<= 39 main_~i~0) (<= 78 main_~j~0) (<= main_~i~0 39) (<= main_~j~0 78)) (and (<= 23 main_~i~0) (<= main_~i~0 23) (<= 46 main_~j~0) (<= main_~j~0 46)) (and (<= 22 main_~j~0) (<= 11 main_~i~0) (<= main_~j~0 22) (<= main_~i~0 11)) (and (<= 77 main_~i~0) (<= main_~i~0 77) (<= 154 main_~j~0) (<= main_~j~0 154)) (and (<= 136 main_~j~0) (<= main_~j~0 136) (<= 68 main_~i~0) (<= main_~i~0 68)) (and (<= 97 main_~i~0) (<= main_~j~0 194) (< main_~i~0 98) (<= 194 main_~j~0)) (and (<= 132 main_~j~0) (<= main_~i~0 66) (<= main_~j~0 132) (<= 66 main_~i~0)) (and (<= 100 main_~i~0) (<= main_~j~0 200) (< 199 main_~j~0)) (and (<= 68 main_~j~0) (<= main_~j~0 68) (<= main_~i~0 34) (<= 34 main_~i~0)) (and (<= main_~j~0 92) (<= 46 main_~i~0) (<= main_~i~0 46) (<= 92 main_~j~0)) (and (<= 37 main_~i~0) (<= main_~i~0 37) (<= main_~j~0 74) (<= 74 main_~j~0)) (and (<= 20 main_~i~0) (<= main_~j~0 40) (<= 40 main_~j~0) (<= main_~i~0 20)) (and (<= 98 main_~i~0) (<= 196 main_~j~0) (< main_~i~0 99) (<= main_~j~0 196)) (and (<= main_~j~0 162) (<= main_~i~0 81) (<= 162 main_~j~0) (<= 81 main_~i~0)) (and (<= 52 main_~i~0) (<= main_~i~0 52) (<= main_~j~0 104) (<= 104 main_~j~0)) (and (<= 12 main_~i~0) (<= main_~j~0 24) (<= main_~i~0 12) (<= 24 main_~j~0)) (and (<= 31 main_~i~0) (<= main_~i~0 31) (<= main_~j~0 62) (<= 62 main_~j~0)) (and (<= main_~j~0 56) (<= main_~i~0 28) (<= 28 main_~i~0) (<= 56 main_~j~0)) (and (<= main_~j~0 90) (<= 90 main_~j~0) (<= 45 main_~i~0) (<= main_~i~0 45)) (and (<= main_~i~0 63) (<= main_~j~0 126) (<= 126 main_~j~0) (<= 63 main_~i~0)) (and (<= main_~i~0 79) (<= 158 main_~j~0) (<= main_~j~0 158) (<= 79 main_~i~0)) (and (<= 78 main_~i~0) (<= 156 main_~j~0) (<= main_~i~0 78) (<= main_~j~0 156)) (and (<= main_~j~0 100) (<= 100 main_~j~0) (<= main_~i~0 50) (<= 50 main_~i~0)) (and (<= 96 main_~j~0) (<= 48 main_~i~0) (<= main_~j~0 96) (<= main_~i~0 48)) (and (<= main_~j~0 44) (<= 22 main_~i~0) (<= main_~i~0 22) (<= 44 main_~j~0)) (and (<= main_~i~0 59) (<= 59 main_~i~0) (<= 118 main_~j~0) (<= main_~j~0 118)) (and (<= 150 main_~j~0) (<= main_~j~0 150) (<= main_~i~0 75) (<= 75 main_~i~0)) (and (<= 58 main_~j~0) (<= main_~j~0 58) (<= main_~i~0 29) (<= 29 main_~i~0)) (and (<= main_~i~0 16) (<= main_~j~0 32) (<= 16 main_~i~0) (<= 32 main_~j~0)) (and (<= 89 main_~i~0) (<= 178 main_~j~0) (<= main_~j~0 178) (<= main_~i~0 89)) (and (<= 30 main_~i~0) (<= main_~i~0 30) (<= main_~j~0 60) (<= 60 main_~j~0)) (and (<= 15 main_~i~0) (<= main_~j~0 30) (<= main_~i~0 15) (<= 30 main_~j~0)) (and (<= 33 main_~i~0) (<= main_~j~0 66) (<= 66 main_~j~0) (<= main_~i~0 33)) (and (<= main_~i~0 64) (<= main_~j~0 128) (<= 64 main_~i~0) (<= 128 main_~j~0)) (and (<= main_~j~0 8) (<= main_~i~0 4) (<= 8 main_~j~0) (<= 4 main_~i~0)) (and (<= 9 main_~i~0) (<= 18 main_~j~0) (<= main_~i~0 9) (<= main_~j~0 18)) (and (<= main_~i~0 56) (<= 56 main_~i~0) (<= main_~j~0 112) (<= 112 main_~j~0)) (and (<= main_~j~0 10) (<= 10 main_~j~0) (<= main_~i~0 5) (<= 5 main_~i~0)) (and (<= main_~j~0 144) (<= main_~i~0 72) (<= 72 main_~i~0) (<= 144 main_~j~0)) (and (<= main_~i~0 49) (<= 49 main_~i~0) (<= 98 main_~j~0) (<= main_~j~0 98)) (and (<= main_~j~0 52) (<= 52 main_~j~0) (<= main_~i~0 26) (<= 26 main_~i~0)) (and (<= 2 main_~i~0) (<= 4 main_~j~0) (<= main_~j~0 4) (<= main_~i~0 2)) (and (<= main_~i~0 92) (<= 184 main_~j~0) (<= main_~j~0 184) (<= 92 main_~i~0)) (and (<= main_~i~0 60) (<= 120 main_~j~0) (<= main_~j~0 120) (<= 60 main_~i~0)) (and (<= 138 main_~j~0) (<= main_~j~0 138) (<= 69 main_~i~0) (<= main_~i~0 69)) (and (<= 19 main_~i~0) (<= main_~j~0 38) (<= main_~i~0 19) (<= 38 main_~j~0)) (and (<= 58 main_~i~0) (<= main_~j~0 116) (<= 116 main_~j~0) (<= main_~i~0 58)) (and (<= 80 main_~i~0) (<= main_~i~0 80) (<= 160 main_~j~0) (<= main_~j~0 160)) (and (<= 114 main_~j~0) (<= main_~j~0 114) (<= main_~i~0 57) (<= 57 main_~i~0)) (and (<= 94 main_~i~0) (<= 188 main_~j~0) (<= main_~j~0 188) (<= main_~i~0 94)) (and (<= 108 main_~j~0) (<= main_~i~0 54) (<= main_~j~0 108) (<= 54 main_~i~0)) (and (<= 51 main_~i~0) (<= main_~i~0 51) (<= 102 main_~j~0) (<= main_~j~0 102)) (and (<= 164 main_~j~0) (<= main_~j~0 164) (<= 82 main_~i~0) (<= main_~i~0 82)) (and (<= 70 main_~j~0) (<= 35 main_~i~0) (<= main_~j~0 70) (<= main_~i~0 35)) (and (<= 64 main_~j~0) (<= main_~i~0 32) (<= main_~j~0 64) (<= 32 main_~i~0)) (and (<= 87 main_~i~0) (<= 174 main_~j~0) (<= main_~j~0 174) (<= main_~i~0 87)) (and (<= main_~i~0 76) (<= 152 main_~j~0) (<= main_~j~0 152) (<= 76 main_~i~0)) (and (<= main_~j~0 2) (<= main_~i~0 1) (<= 2 main_~j~0) (<= 1 main_~i~0)) (and (<= 83 main_~i~0) (<= main_~j~0 166) (<= main_~i~0 83) (<= 166 main_~j~0)) (and (<= main_~i~0 10) (<= 20 main_~j~0) (<= 10 main_~i~0) (<= main_~j~0 20)) (and (<= main_~i~0 41) (<= 82 main_~j~0) (<= 41 main_~i~0) (<= main_~j~0 82)) (and (<= main_~j~0 36) (<= main_~i~0 18) (<= 18 main_~i~0) (<= 36 main_~j~0)) (and (<= main_~i~0 27) (<= 54 main_~j~0) (<= main_~j~0 54) (<= 27 main_~i~0)) (and (<= 50 main_~j~0) (<= 25 main_~i~0) (<= main_~j~0 50) (<= main_~i~0 25)) (and (<= main_~j~0 86) (<= 86 main_~j~0) (<= main_~i~0 43) (<= 43 main_~i~0)) (and (<= 62 main_~i~0) (<= 124 main_~j~0) (<= main_~i~0 62) (<= main_~j~0 124)) (and (<= main_~j~0 142) (<= 142 main_~j~0) (<= main_~i~0 71) (<= 71 main_~i~0)) (and (<= 42 main_~i~0) (<= main_~i~0 42) (<= 84 main_~j~0) (<= main_~j~0 84)) (and (<= main_~j~0 192) (< main_~i~0 97) (<= 96 main_~i~0) (<= 192 main_~j~0)) (and (<= 14 main_~j~0) (<= main_~i~0 7) (<= main_~j~0 14) (<= 7 main_~i~0)) (and (<= main_~j~0 6) (<= 6 main_~j~0) (<= 3 main_~i~0) (<= main_~i~0 3)) (and (<= main_~j~0 34) (<= 17 main_~i~0) (<= main_~i~0 17) (<= 34 main_~j~0)) (and (<= 40 main_~i~0) (<= 80 main_~j~0) (<= main_~i~0 40) (<= main_~j~0 80)) (and (<= main_~i~0 14) (<= 14 main_~i~0) (<= main_~j~0 28) (<= 28 main_~j~0)) (and (<= 88 main_~i~0) (<= 176 main_~j~0) (<= main_~j~0 176) (<= main_~i~0 88)) (and (<= main_~i~0 0) (<= 0 main_~j~0) (<= 0 main_~i~0) (<= main_~j~0 0)) (and (<= main_~i~0 70) (<= 70 main_~i~0) (<= main_~j~0 140) (<= 140 main_~j~0)) (and (<= 182 main_~j~0) (<= main_~i~0 91) (<= 91 main_~i~0) (<= main_~j~0 182)) (and (<= 24 main_~i~0) (<= main_~j~0 48) (<= main_~i~0 24) (<= 48 main_~j~0)) (and (<= main_~j~0 146) (<= 146 main_~j~0) (<= main_~i~0 73) (<= 73 main_~i~0)) (and (<= 8 main_~i~0) (<= main_~i~0 8) (<= main_~j~0 16) (<= 16 main_~j~0)) (and (<= 42 main_~j~0) (<= main_~j~0 42) (<= main_~i~0 21) (<= 21 main_~i~0)) (and (<= main_~j~0 198) (< main_~i~0 100) (<= 99 main_~i~0) (<= 198 main_~j~0)) (and (<= main_~j~0 122) (<= 61 main_~i~0) (<= main_~i~0 61) (<= 122 main_~j~0)) (and (<= main_~i~0 84) (<= 168 main_~j~0) (<= 84 main_~i~0) (<= main_~j~0 168)) (and (<= main_~j~0 110) (<= 110 main_~j~0) (<= main_~i~0 55) (<= 55 main_~i~0)) (and (<= main_~i~0 47) (<= main_~j~0 94) (<= 94 main_~j~0) (<= 47 main_~i~0)) (and (<= 170 main_~j~0) (<= 85 main_~i~0) (<= main_~i~0 85) (<= main_~j~0 170)) (and (<= main_~i~0 13) (<= 13 main_~i~0) (<= main_~j~0 26) (<= 26 main_~j~0))) [2022-02-14 16:44:39,500 INFO L854 garLoopResultBuilder]: At program point L23-3(lines 23 26) the Hoare annotation is: (and (<= main_~j~0 200) (< 199 main_~j~0)) [2022-02-14 16:44:39,500 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 19 29) no Hoare annotation was computed. [2022-02-14 16:44:39,500 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-02-14 16:44:39,500 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-14 16:44:39,500 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-02-14 16:44:39,500 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-14 16:44:39,500 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-14 16:44:39,500 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-14 16:44:39,500 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-14 16:44:39,500 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-02-14 16:44:39,500 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-02-14 16:44:39,500 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-02-14 16:44:39,500 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2022-02-14 16:44:39,500 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2022-02-14 16:44:39,501 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-02-14 16:44:39,503 INFO L732 BasicCegarLoop]: Path program histogram: [8, 1] [2022-02-14 16:44:39,504 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 16:44:39,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 04:44:39 BoogieIcfgContainer [2022-02-14 16:44:39,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 16:44:39,545 INFO L158 Benchmark]: Toolchain (without parser) took 36209.61ms. Allocated memory was 196.1MB in the beginning and 248.5MB in the end (delta: 52.4MB). Free memory was 145.7MB in the beginning and 213.1MB in the end (delta: -67.4MB). Peak memory consumption was 123.0MB. Max. memory is 8.0GB. [2022-02-14 16:44:39,546 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory was 161.7MB in the beginning and 161.6MB in the end (delta: 136.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 16:44:39,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.31ms. Allocated memory is still 196.1MB. Free memory was 145.5MB in the beginning and 171.3MB in the end (delta: -25.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-14 16:44:39,546 INFO L158 Benchmark]: Boogie Preprocessor took 30.04ms. Allocated memory is still 196.1MB. Free memory was 171.3MB in the beginning and 169.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 16:44:39,546 INFO L158 Benchmark]: RCFGBuilder took 213.16ms. Allocated memory is still 196.1MB. Free memory was 169.8MB in the beginning and 160.2MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-14 16:44:39,546 INFO L158 Benchmark]: TraceAbstraction took 35767.04ms. Allocated memory was 196.1MB in the beginning and 248.5MB in the end (delta: 52.4MB). Free memory was 159.8MB in the beginning and 213.1MB in the end (delta: -53.3MB). Peak memory consumption was 137.9MB. Max. memory is 8.0GB. [2022-02-14 16:44:39,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory was 161.7MB in the beginning and 161.6MB in the end (delta: 136.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.31ms. Allocated memory is still 196.1MB. Free memory was 145.5MB in the beginning and 171.3MB in the end (delta: -25.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.04ms. Allocated memory is still 196.1MB. Free memory was 171.3MB in the beginning and 169.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 213.16ms. Allocated memory is still 196.1MB. Free memory was 169.8MB in the beginning and 160.2MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 35767.04ms. Allocated memory was 196.1MB in the beginning and 248.5MB in the end (delta: 52.4MB). Free memory was 159.8MB in the beginning and 213.1MB in the end (delta: -53.3MB). Peak memory consumption was 137.9MB. 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: 16]: 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, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 35.7s, OverallIterations: 9, TraceHistogramMax: 101, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 16.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 764 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 655 mSDsCounter, 514 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12229 IncrementalHoareTripleChecker+Invalid, 12743 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 514 mSolverCounterUnsat, 109 mSDtfsCounter, 12229 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1620 GetRequests, 641 SyntacticMatches, 6 SemanticMatches, 973 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22650 ImplicationChecksByTransitivity, 24.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=8, InterpolantAutomatonStates: 508, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 117 NumberOfFragments, 1329 HoareAnnotationTreeSize, 15 FomulaSimplifications, 264 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 847 NumberOfCodeBlocks, 847 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 1185 ConstructedInterpolants, 0 QuantifiedInterpolants, 4391 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1784 ConjunctsInSsa, 394 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 5151/37896 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((j <= 190 && 190 <= j) && 95 <= i) && i < 96) || (((38 <= i && 76 <= j) && i <= 38) && j <= 76)) || (((j <= 88 && 88 <= j) && 44 <= i) && i <= 44)) || (((j <= 130 && 130 <= j) && 65 <= i) && i <= 65)) || (((i <= 53 && 53 <= i) && 106 <= j) && j <= 106)) || (((86 <= i && i <= 86) && 172 <= j) && j <= 172)) || (((i <= 93 && 93 <= i) && 186 <= j) && j <= 186)) || (((j <= 72 && 72 <= j) && 36 <= i) && i <= 36)) || (((j <= 12 && 12 <= j) && i <= 6) && 6 <= i)) || (((134 <= j && 67 <= i) && i <= 67) && j <= 134)) || (((90 <= i && j <= 180) && i <= 90) && 180 <= j)) || (((148 <= j && j <= 148) && 74 <= i) && i <= 74)) || (((39 <= i && 78 <= j) && i <= 39) && j <= 78)) || (((23 <= i && i <= 23) && 46 <= j) && j <= 46)) || (((22 <= j && 11 <= i) && j <= 22) && i <= 11)) || (((77 <= i && i <= 77) && 154 <= j) && j <= 154)) || (((136 <= j && j <= 136) && 68 <= i) && i <= 68)) || (((97 <= i && j <= 194) && i < 98) && 194 <= j)) || (((132 <= j && i <= 66) && j <= 132) && 66 <= i)) || ((100 <= i && j <= 200) && 199 < j)) || (((68 <= j && j <= 68) && i <= 34) && 34 <= i)) || (((j <= 92 && 46 <= i) && i <= 46) && 92 <= j)) || (((37 <= i && i <= 37) && j <= 74) && 74 <= j)) || (((20 <= i && j <= 40) && 40 <= j) && i <= 20)) || (((98 <= i && 196 <= j) && i < 99) && j <= 196)) || (((j <= 162 && i <= 81) && 162 <= j) && 81 <= i)) || (((52 <= i && i <= 52) && j <= 104) && 104 <= j)) || (((12 <= i && j <= 24) && i <= 12) && 24 <= j)) || (((31 <= i && i <= 31) && j <= 62) && 62 <= j)) || (((j <= 56 && i <= 28) && 28 <= i) && 56 <= j)) || (((j <= 90 && 90 <= j) && 45 <= i) && i <= 45)) || (((i <= 63 && j <= 126) && 126 <= j) && 63 <= i)) || (((i <= 79 && 158 <= j) && j <= 158) && 79 <= i)) || (((78 <= i && 156 <= j) && i <= 78) && j <= 156)) || (((j <= 100 && 100 <= j) && i <= 50) && 50 <= i)) || (((96 <= j && 48 <= i) && j <= 96) && i <= 48)) || (((j <= 44 && 22 <= i) && i <= 22) && 44 <= j)) || (((i <= 59 && 59 <= i) && 118 <= j) && j <= 118)) || (((150 <= j && j <= 150) && i <= 75) && 75 <= i)) || (((58 <= j && j <= 58) && i <= 29) && 29 <= i)) || (((i <= 16 && j <= 32) && 16 <= i) && 32 <= j)) || (((89 <= i && 178 <= j) && j <= 178) && i <= 89)) || (((30 <= i && i <= 30) && j <= 60) && 60 <= j)) || (((15 <= i && j <= 30) && i <= 15) && 30 <= j)) || (((33 <= i && j <= 66) && 66 <= j) && i <= 33)) || (((i <= 64 && j <= 128) && 64 <= i) && 128 <= j)) || (((j <= 8 && i <= 4) && 8 <= j) && 4 <= i)) || (((9 <= i && 18 <= j) && i <= 9) && j <= 18)) || (((i <= 56 && 56 <= i) && j <= 112) && 112 <= j)) || (((j <= 10 && 10 <= j) && i <= 5) && 5 <= i)) || (((j <= 144 && i <= 72) && 72 <= i) && 144 <= j)) || (((i <= 49 && 49 <= i) && 98 <= j) && j <= 98)) || (((j <= 52 && 52 <= j) && i <= 26) && 26 <= i)) || (((2 <= i && 4 <= j) && j <= 4) && i <= 2)) || (((i <= 92 && 184 <= j) && j <= 184) && 92 <= i)) || (((i <= 60 && 120 <= j) && j <= 120) && 60 <= i)) || (((138 <= j && j <= 138) && 69 <= i) && i <= 69)) || (((19 <= i && j <= 38) && i <= 19) && 38 <= j)) || (((58 <= i && j <= 116) && 116 <= j) && i <= 58)) || (((80 <= i && i <= 80) && 160 <= j) && j <= 160)) || (((114 <= j && j <= 114) && i <= 57) && 57 <= i)) || (((94 <= i && 188 <= j) && j <= 188) && i <= 94)) || (((108 <= j && i <= 54) && j <= 108) && 54 <= i)) || (((51 <= i && i <= 51) && 102 <= j) && j <= 102)) || (((164 <= j && j <= 164) && 82 <= i) && i <= 82)) || (((70 <= j && 35 <= i) && j <= 70) && i <= 35)) || (((64 <= j && i <= 32) && j <= 64) && 32 <= i)) || (((87 <= i && 174 <= j) && j <= 174) && i <= 87)) || (((i <= 76 && 152 <= j) && j <= 152) && 76 <= i)) || (((j <= 2 && i <= 1) && 2 <= j) && 1 <= i)) || (((83 <= i && j <= 166) && i <= 83) && 166 <= j)) || (((i <= 10 && 20 <= j) && 10 <= i) && j <= 20)) || (((i <= 41 && 82 <= j) && 41 <= i) && j <= 82)) || (((j <= 36 && i <= 18) && 18 <= i) && 36 <= j)) || (((i <= 27 && 54 <= j) && j <= 54) && 27 <= i)) || (((50 <= j && 25 <= i) && j <= 50) && i <= 25)) || (((j <= 86 && 86 <= j) && i <= 43) && 43 <= i)) || (((62 <= i && 124 <= j) && i <= 62) && j <= 124)) || (((j <= 142 && 142 <= j) && i <= 71) && 71 <= i)) || (((42 <= i && i <= 42) && 84 <= j) && j <= 84)) || (((j <= 192 && i < 97) && 96 <= i) && 192 <= j)) || (((14 <= j && i <= 7) && j <= 14) && 7 <= i)) || (((j <= 6 && 6 <= j) && 3 <= i) && i <= 3)) || (((j <= 34 && 17 <= i) && i <= 17) && 34 <= j)) || (((40 <= i && 80 <= j) && i <= 40) && j <= 80)) || (((i <= 14 && 14 <= i) && j <= 28) && 28 <= j)) || (((88 <= i && 176 <= j) && j <= 176) && i <= 88)) || (((i <= 0 && 0 <= j) && 0 <= i) && j <= 0)) || (((i <= 70 && 70 <= i) && j <= 140) && 140 <= j)) || (((182 <= j && i <= 91) && 91 <= i) && j <= 182)) || (((24 <= i && j <= 48) && i <= 24) && 48 <= j)) || (((j <= 146 && 146 <= j) && i <= 73) && 73 <= i)) || (((8 <= i && i <= 8) && j <= 16) && 16 <= j)) || (((42 <= j && j <= 42) && i <= 21) && 21 <= i)) || (((j <= 198 && i < 100) && 99 <= i) && 198 <= j)) || (((j <= 122 && 61 <= i) && i <= 61) && 122 <= j)) || (((i <= 84 && 168 <= j) && 84 <= i) && j <= 168)) || (((j <= 110 && 110 <= j) && i <= 55) && 55 <= i)) || (((i <= 47 && j <= 94) && 94 <= j) && 47 <= i)) || (((170 <= j && 85 <= i) && i <= 85) && j <= 170)) || (((i <= 13 && 13 <= i) && j <= 26) && 26 <= j) RESULT: Ultimate proved your program to be correct! [2022-02-14 16:44:39,583 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...