./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem01_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem01_label06.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0610fb40496b0ecade3a5ec9ba274ec558241ab5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 20:39:40,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 20:39:40,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 20:39:40,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 20:39:40,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 20:39:40,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 20:39:40,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 20:39:40,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 20:39:40,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 20:39:40,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 20:39:40,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 20:39:40,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 20:39:40,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 20:39:40,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 20:39:40,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 20:39:40,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 20:39:40,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 20:39:40,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 20:39:40,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 20:39:40,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 20:39:40,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 20:39:40,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 20:39:40,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 20:39:40,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 20:39:40,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 20:39:40,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 20:39:40,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 20:39:40,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 20:39:40,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 20:39:40,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 20:39:40,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 20:39:40,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 20:39:40,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 20:39:40,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 20:39:40,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 20:39:40,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 20:39:40,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 20:39:40,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 20:39:40,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 20:39:40,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 20:39:40,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 20:39:40,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 20:39:41,029 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 20:39:41,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 20:39:41,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 20:39:41,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 20:39:41,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 20:39:41,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 20:39:41,032 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 20:39:41,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 20:39:41,033 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 20:39:41,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 20:39:41,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 20:39:41,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 20:39:41,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 20:39:41,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 20:39:41,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 20:39:41,035 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 20:39:41,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 20:39:41,035 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 20:39:41,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 20:39:41,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 20:39:41,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 20:39:41,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 20:39:41,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:39:41,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 20:39:41,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 20:39:41,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 20:39:41,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 20:39:41,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 20:39:41,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 20:39:41,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 20:39:41,037 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0610fb40496b0ecade3a5ec9ba274ec558241ab5 [2021-08-25 20:39:41,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 20:39:41,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 20:39:41,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 20:39:41,437 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 20:39:41,438 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 20:39:41,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label06.c [2021-08-25 20:39:41,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547b4797b/e5aa6f8461424519b1175c9cc316aef9/FLAG9dbb0076d [2021-08-25 20:39:41,965 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 20:39:41,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label06.c [2021-08-25 20:39:41,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547b4797b/e5aa6f8461424519b1175c9cc316aef9/FLAG9dbb0076d [2021-08-25 20:39:41,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547b4797b/e5aa6f8461424519b1175c9cc316aef9 [2021-08-25 20:39:41,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 20:39:42,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 20:39:42,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 20:39:42,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 20:39:42,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 20:39:42,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:39:41" (1/1) ... [2021-08-25 20:39:42,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53af2453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42, skipping insertion in model container [2021-08-25 20:39:42,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:39:41" (1/1) ... [2021-08-25 20:39:42,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 20:39:42,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 20:39:42,378 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label06.c[20964,20977] [2021-08-25 20:39:42,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:39:42,397 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 20:39:42,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label06.c[20964,20977] [2021-08-25 20:39:42,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:39:42,506 INFO L208 MainTranslator]: Completed translation [2021-08-25 20:39:42,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42 WrapperNode [2021-08-25 20:39:42,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 20:39:42,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 20:39:42,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 20:39:42,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 20:39:42,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42" (1/1) ... [2021-08-25 20:39:42,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42" (1/1) ... [2021-08-25 20:39:42,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 20:39:42,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 20:39:42,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 20:39:42,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 20:39:42,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42" (1/1) ... [2021-08-25 20:39:42,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42" (1/1) ... [2021-08-25 20:39:42,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42" (1/1) ... [2021-08-25 20:39:42,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42" (1/1) ... [2021-08-25 20:39:42,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42" (1/1) ... [2021-08-25 20:39:42,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42" (1/1) ... [2021-08-25 20:39:42,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42" (1/1) ... [2021-08-25 20:39:42,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 20:39:42,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 20:39:42,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 20:39:42,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 20:39:42,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42" (1/1) ... [2021-08-25 20:39:42,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:39:42,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:39:42,694 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) [2021-08-25 20:39:42,719 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 [2021-08-25 20:39:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 20:39:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 20:39:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 20:39:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 20:39:43,960 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 20:39:43,960 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-25 20:39:43,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:39:43 BoogieIcfgContainer [2021-08-25 20:39:43,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 20:39:43,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 20:39:43,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 20:39:43,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 20:39:43,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:39:41" (1/3) ... [2021-08-25 20:39:43,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd4bc03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:39:43, skipping insertion in model container [2021-08-25 20:39:43,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:39:42" (2/3) ... [2021-08-25 20:39:43,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd4bc03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:39:43, skipping insertion in model container [2021-08-25 20:39:43,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:39:43" (3/3) ... [2021-08-25 20:39:43,969 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2021-08-25 20:39:43,976 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 20:39:43,976 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 20:39:44,021 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 20:39:44,027 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-25 20:39:44,028 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 20:39:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 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) [2021-08-25 20:39:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-08-25 20:39:44,060 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:39:44,061 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:39:44,062 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:39:44,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:39:44,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1065839007, now seen corresponding path program 1 times [2021-08-25 20:39:44,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:39:44,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375115563] [2021-08-25 20:39:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:39:44,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:39:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:39:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:39:44,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:39:44,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375115563] [2021-08-25 20:39:44,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375115563] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:39:44,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:39:44,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-25 20:39:44,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126444847] [2021-08-25 20:39:44,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-25 20:39:44,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:39:44,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-25 20:39:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-25 20:39:44,634 INFO L87 Difference]: Start difference. First operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-08-25 20:39:46,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:39:46,364 INFO L93 Difference]: Finished difference Result 662 states and 1178 transitions. [2021-08-25 20:39:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-25 20:39:46,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-08-25 20:39:46,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:39:46,377 INFO L225 Difference]: With dead ends: 662 [2021-08-25 20:39:46,377 INFO L226 Difference]: Without dead ends: 397 [2021-08-25 20:39:46,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 90.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-25 20:39:46,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-08-25 20:39:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2021-08-25 20:39:46,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.3055555555555556) internal successors, (517), 396 states have internal predecessors, (517), 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) [2021-08-25 20:39:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 517 transitions. [2021-08-25 20:39:46,435 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 517 transitions. Word has length 124 [2021-08-25 20:39:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:39:46,436 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 517 transitions. [2021-08-25 20:39:46,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-08-25 20:39:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 517 transitions. [2021-08-25 20:39:46,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-08-25 20:39:46,440 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:39:46,440 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:39:46,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 20:39:46,440 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:39:46,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:39:46,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1847356338, now seen corresponding path program 1 times [2021-08-25 20:39:46,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:39:46,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502145830] [2021-08-25 20:39:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:39:46,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:39:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:39:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:39:46,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:39:46,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502145830] [2021-08-25 20:39:46,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502145830] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:39:46,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:39:46,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:39:46,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303218404] [2021-08-25 20:39:46,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 20:39:46,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:39:46,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 20:39:46,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 20:39:46,652 INFO L87 Difference]: Start difference. First operand 397 states and 517 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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) [2021-08-25 20:39:47,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:39:47,696 INFO L93 Difference]: Finished difference Result 1018 states and 1433 transitions. [2021-08-25 20:39:47,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 20:39:47,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-08-25 20:39:47,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:39:47,699 INFO L225 Difference]: With dead ends: 1018 [2021-08-25 20:39:47,699 INFO L226 Difference]: Without dead ends: 659 [2021-08-25 20:39:47,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 20:39:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-08-25 20:39:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 397. [2021-08-25 20:39:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.196969696969697) internal successors, (474), 396 states have internal predecessors, (474), 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) [2021-08-25 20:39:47,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 474 transitions. [2021-08-25 20:39:47,747 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 474 transitions. Word has length 131 [2021-08-25 20:39:47,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:39:47,747 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 474 transitions. [2021-08-25 20:39:47,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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) [2021-08-25 20:39:47,748 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 474 transitions. [2021-08-25 20:39:47,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-08-25 20:39:47,750 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:39:47,750 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:39:47,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 20:39:47,751 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:39:47,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:39:47,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1484164368, now seen corresponding path program 1 times [2021-08-25 20:39:47,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:39:47,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078498654] [2021-08-25 20:39:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:39:47,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:39:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:39:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:39:47,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:39:47,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078498654] [2021-08-25 20:39:47,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078498654] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 20:39:47,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714678264] [2021-08-25 20:39:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:39:47,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 20:39:47,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:39:47,857 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) [2021-08-25 20:39:47,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-25 20:39:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:39:47,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 20:39:48,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:39:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:39:48,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714678264] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:39:48,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 20:39:48,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-08-25 20:39:48,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492966354] [2021-08-25 20:39:48,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:39:48,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:39:48,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:39:48,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-25 20:39:48,909 INFO L87 Difference]: Start difference. First operand 397 states and 474 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2021-08-25 20:39:49,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:39:49,468 INFO L93 Difference]: Finished difference Result 923 states and 1124 transitions. [2021-08-25 20:39:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:39:49,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-08-25 20:39:49,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:39:49,472 INFO L225 Difference]: With dead ends: 923 [2021-08-25 20:39:49,472 INFO L226 Difference]: Without dead ends: 528 [2021-08-25 20:39:49,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-25 20:39:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-08-25 20:39:49,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2021-08-25 20:39:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.1935483870967742) internal successors, (629), 527 states have internal predecessors, (629), 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) [2021-08-25 20:39:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 629 transitions. [2021-08-25 20:39:49,487 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 629 transitions. Word has length 139 [2021-08-25 20:39:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:39:49,488 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 629 transitions. [2021-08-25 20:39:49,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2021-08-25 20:39:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 629 transitions. [2021-08-25 20:39:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-08-25 20:39:49,490 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:39:49,491 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:39:49,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-25 20:39:49,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 20:39:49,705 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:39:49,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:39:49,705 INFO L82 PathProgramCache]: Analyzing trace with hash 754141521, now seen corresponding path program 1 times [2021-08-25 20:39:49,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:39:49,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666137259] [2021-08-25 20:39:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:39:49,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:39:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:39:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-25 20:39:49,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:39:49,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666137259] [2021-08-25 20:39:49,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666137259] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:39:49,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:39:49,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-25 20:39:49,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309178668] [2021-08-25 20:39:49,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:39:49,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:39:49,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:39:49,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:39:49,820 INFO L87 Difference]: Start difference. First operand 528 states and 629 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 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) [2021-08-25 20:39:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:39:50,377 INFO L93 Difference]: Finished difference Result 1185 states and 1415 transitions. [2021-08-25 20:39:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:39:50,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-08-25 20:39:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:39:50,381 INFO L225 Difference]: With dead ends: 1185 [2021-08-25 20:39:50,381 INFO L226 Difference]: Without dead ends: 659 [2021-08-25 20:39:50,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:39:50,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-08-25 20:39:50,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2021-08-25 20:39:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.1732522796352585) internal successors, (772), 658 states have internal predecessors, (772), 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) [2021-08-25 20:39:50,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 772 transitions. [2021-08-25 20:39:50,395 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 772 transitions. Word has length 177 [2021-08-25 20:39:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:39:50,395 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 772 transitions. [2021-08-25 20:39:50,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 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) [2021-08-25 20:39:50,396 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 772 transitions. [2021-08-25 20:39:50,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-08-25 20:39:50,398 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:39:50,399 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:39:50,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-25 20:39:50,399 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:39:50,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:39:50,400 INFO L82 PathProgramCache]: Analyzing trace with hash -263954381, now seen corresponding path program 1 times [2021-08-25 20:39:50,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:39:50,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844926258] [2021-08-25 20:39:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:39:50,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:39:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:39:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-08-25 20:39:50,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:39:50,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844926258] [2021-08-25 20:39:50,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844926258] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:39:50,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:39:50,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:39:50,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231959506] [2021-08-25 20:39:50,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:39:50,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:39:50,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:39:50,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:39:50,453 INFO L87 Difference]: Start difference. First operand 659 states and 772 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-08-25 20:39:51,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:39:51,060 INFO L93 Difference]: Finished difference Result 1971 states and 2311 transitions. [2021-08-25 20:39:51,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:39:51,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2021-08-25 20:39:51,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:39:51,067 INFO L225 Difference]: With dead ends: 1971 [2021-08-25 20:39:51,067 INFO L226 Difference]: Without dead ends: 1314 [2021-08-25 20:39:51,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:39:51,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-08-25 20:39:51,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1052. [2021-08-25 20:39:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 1.1883920076117982) internal successors, (1249), 1051 states have internal predecessors, (1249), 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) [2021-08-25 20:39:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1249 transitions. [2021-08-25 20:39:51,092 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1249 transitions. Word has length 186 [2021-08-25 20:39:51,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:39:51,093 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 1249 transitions. [2021-08-25 20:39:51,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-08-25 20:39:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1249 transitions. [2021-08-25 20:39:51,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-08-25 20:39:51,096 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:39:51,096 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:39:51,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-25 20:39:51,098 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:39:51,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:39:51,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1089788510, now seen corresponding path program 1 times [2021-08-25 20:39:51,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:39:51,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178030938] [2021-08-25 20:39:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:39:51,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:39:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:39:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-08-25 20:39:51,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:39:51,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178030938] [2021-08-25 20:39:51,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178030938] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:39:51,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:39:51,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:39:51,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315671696] [2021-08-25 20:39:51,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 20:39:51,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:39:51,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 20:39:51,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 20:39:51,186 INFO L87 Difference]: Start difference. First operand 1052 states and 1249 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-08-25 20:39:52,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:39:52,075 INFO L93 Difference]: Finished difference Result 2757 states and 3259 transitions. [2021-08-25 20:39:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 20:39:52,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2021-08-25 20:39:52,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:39:52,081 INFO L225 Difference]: With dead ends: 2757 [2021-08-25 20:39:52,081 INFO L226 Difference]: Without dead ends: 1707 [2021-08-25 20:39:52,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 20:39:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-08-25 20:39:52,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1445. [2021-08-25 20:39:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.172437673130194) internal successors, (1693), 1444 states have internal predecessors, (1693), 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) [2021-08-25 20:39:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1693 transitions. [2021-08-25 20:39:52,112 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1693 transitions. Word has length 192 [2021-08-25 20:39:52,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:39:52,112 INFO L470 AbstractCegarLoop]: Abstraction has 1445 states and 1693 transitions. [2021-08-25 20:39:52,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-08-25 20:39:52,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1693 transitions. [2021-08-25 20:39:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-08-25 20:39:52,116 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:39:52,116 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:39:52,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-25 20:39:52,117 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:39:52,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:39:52,117 INFO L82 PathProgramCache]: Analyzing trace with hash 711501825, now seen corresponding path program 1 times [2021-08-25 20:39:52,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:39:52,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924284665] [2021-08-25 20:39:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:39:52,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:39:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:39:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 85 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:39:52,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:39:52,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924284665] [2021-08-25 20:39:52,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924284665] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 20:39:52,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049706964] [2021-08-25 20:39:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:39:52,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 20:39:52,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:39:52,344 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) [2021-08-25 20:39:52,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-25 20:39:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:39:52,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 20:39:52,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:39:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-08-25 20:39:53,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049706964] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:39:53,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 20:39:53,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-08-25 20:39:53,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603442967] [2021-08-25 20:39:53,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:39:53,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:39:53,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:39:53,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-25 20:39:53,600 INFO L87 Difference]: Start difference. First operand 1445 states and 1693 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-08-25 20:39:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:39:54,161 INFO L93 Difference]: Finished difference Result 3281 states and 3831 transitions. [2021-08-25 20:39:54,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:39:54,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-08-25 20:39:54,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:39:54,175 INFO L225 Difference]: With dead ends: 3281 [2021-08-25 20:39:54,175 INFO L226 Difference]: Without dead ends: 1707 [2021-08-25 20:39:54,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.1ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-25 20:39:54,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-08-25 20:39:54,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1707. [2021-08-25 20:39:54,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 1.1336459554513483) internal successors, (1934), 1706 states have internal predecessors, (1934), 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) [2021-08-25 20:39:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1934 transitions. [2021-08-25 20:39:54,204 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1934 transitions. Word has length 210 [2021-08-25 20:39:54,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:39:54,205 INFO L470 AbstractCegarLoop]: Abstraction has 1707 states and 1934 transitions. [2021-08-25 20:39:54,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-08-25 20:39:54,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1934 transitions. [2021-08-25 20:39:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-08-25 20:39:54,210 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:39:54,210 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:39:54,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-25 20:39:54,433 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,SelfDestructingSolverStorable6 [2021-08-25 20:39:54,433 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:39:54,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:39:54,433 INFO L82 PathProgramCache]: Analyzing trace with hash -811478158, now seen corresponding path program 1 times [2021-08-25 20:39:54,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:39:54,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485469616] [2021-08-25 20:39:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:39:54,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:39:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:39:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 122 proven. 36 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-08-25 20:39:54,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:39:54,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485469616] [2021-08-25 20:39:54,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485469616] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 20:39:54,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305719048] [2021-08-25 20:39:54,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:39:54,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 20:39:54,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:39:54,637 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) [2021-08-25 20:39:54,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-25 20:39:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:39:55,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 20:39:55,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:39:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-08-25 20:39:55,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305719048] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:39:55,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 20:39:55,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-08-25 20:39:55,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794877195] [2021-08-25 20:39:55,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:39:55,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:39:55,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:39:55,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-25 20:39:55,988 INFO L87 Difference]: Start difference. First operand 1707 states and 1934 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2021-08-25 20:39:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:39:56,571 INFO L93 Difference]: Finished difference Result 4329 states and 4894 transitions. [2021-08-25 20:39:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:39:56,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-08-25 20:39:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:39:56,581 INFO L225 Difference]: With dead ends: 4329 [2021-08-25 20:39:56,581 INFO L226 Difference]: Without dead ends: 2624 [2021-08-25 20:39:56,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-25 20:39:56,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2021-08-25 20:39:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2493. [2021-08-25 20:39:56,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2492 states have (on average 1.1260032102728732) internal successors, (2806), 2492 states have internal predecessors, (2806), 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) [2021-08-25 20:39:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2806 transitions. [2021-08-25 20:39:56,624 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2806 transitions. Word has length 229 [2021-08-25 20:39:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:39:56,624 INFO L470 AbstractCegarLoop]: Abstraction has 2493 states and 2806 transitions. [2021-08-25 20:39:56,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2021-08-25 20:39:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2806 transitions. [2021-08-25 20:39:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-08-25 20:39:56,632 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:39:56,632 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:39:56,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-25 20:39:56,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 20:39:56,849 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:39:56,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:39:56,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1880505698, now seen corresponding path program 1 times [2021-08-25 20:39:56,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:39:56,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266009187] [2021-08-25 20:39:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:39:56,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:39:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:39:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-08-25 20:39:56,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:39:56,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266009187] [2021-08-25 20:39:56,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266009187] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:39:56,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:39:56,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:39:56,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371268] [2021-08-25 20:39:56,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 20:39:56,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:39:56,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 20:39:56,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 20:39:56,957 INFO L87 Difference]: Start difference. First operand 2493 states and 2806 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-08-25 20:39:57,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:39:57,799 INFO L93 Difference]: Finished difference Result 6161 states and 6961 transitions. [2021-08-25 20:39:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 20:39:57,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2021-08-25 20:39:57,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:39:57,800 INFO L225 Difference]: With dead ends: 6161 [2021-08-25 20:39:57,800 INFO L226 Difference]: Without dead ends: 0 [2021-08-25 20:39:57,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 20:39:57,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-25 20:39:57,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-25 20:39:57,805 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) [2021-08-25 20:39:57,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-25 20:39:57,805 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 261 [2021-08-25 20:39:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:39:57,805 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-25 20:39:57,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-08-25 20:39:57,806 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-25 20:39:57,806 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-25 20:39:57,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:39:57,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-25 20:39:57,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-25 20:39:57,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:39:57,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:39:57,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 20:39:58,039 INFO L857 garLoopResultBuilder]: For program point L564(line 564) no Hoare annotation was computed. [2021-08-25 20:39:58,039 INFO L857 garLoopResultBuilder]: For program point L531(line 531) no Hoare annotation was computed. [2021-08-25 20:39:58,039 INFO L857 garLoopResultBuilder]: For program point L498(line 498) no Hoare annotation was computed. [2021-08-25 20:39:58,039 INFO L857 garLoopResultBuilder]: For program point L465(line 465) no Hoare annotation was computed. [2021-08-25 20:39:58,039 INFO L857 garLoopResultBuilder]: For program point L432(line 432) no Hoare annotation was computed. [2021-08-25 20:39:58,039 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-08-25 20:39:58,039 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-08-25 20:39:58,039 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-08-25 20:39:58,039 INFO L857 garLoopResultBuilder]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L401(lines 401 403) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L434-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L401-2(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L567(line 567) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L534(line 534) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L501(line 501) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L468(line 468) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L435(line 435) no Hoare annotation was computed. [2021-08-25 20:39:58,040 INFO L857 garLoopResultBuilder]: For program point L402(line 402) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L404-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-08-25 20:39:58,041 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L570(line 570) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L537(line 537) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L504(line 504) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L471(line 471) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L438(line 438) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L405(line 405) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,042 INFO L857 garLoopResultBuilder]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L473-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L407-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L573(line 573) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L540(line 540) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L507(line 507) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L474(line 474) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L441(line 441) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L408(line 408) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-08-25 20:39:58,043 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L410-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L576(line 576) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L543(line 543) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L510(line 510) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L477(line 477) no Hoare annotation was computed. [2021-08-25 20:39:58,044 INFO L857 garLoopResultBuilder]: For program point L444(line 444) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L411(line 411) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L413-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L579(line 579) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L546(line 546) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L513(line 513) no Hoare annotation was computed. [2021-08-25 20:39:58,045 INFO L857 garLoopResultBuilder]: For program point L480(line 480) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L447(line 447) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L414(line 414) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,046 INFO L857 garLoopResultBuilder]: For program point L416-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,047 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-25 20:39:58,047 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-08-25 20:39:58,047 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-08-25 20:39:58,047 INFO L857 garLoopResultBuilder]: For program point L582(line 582) no Hoare annotation was computed. [2021-08-25 20:39:58,047 INFO L857 garLoopResultBuilder]: For program point L549(line 549) no Hoare annotation was computed. [2021-08-25 20:39:58,047 INFO L857 garLoopResultBuilder]: For program point L516(line 516) no Hoare annotation was computed. [2021-08-25 20:39:58,047 INFO L857 garLoopResultBuilder]: For program point L483(line 483) no Hoare annotation was computed. [2021-08-25 20:39:58,047 INFO L857 garLoopResultBuilder]: For program point L450(line 450) no Hoare annotation was computed. [2021-08-25 20:39:58,047 INFO L857 garLoopResultBuilder]: For program point L417(line 417) no Hoare annotation was computed. [2021-08-25 20:39:58,047 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-08-25 20:39:58,047 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a17~0 1)) (.cse1 (= ~a20~0 1))) (or (and (<= ~a21~0 0) .cse0 .cse1) (and (<= ~a7~0 0) (= ~a12~0 8) (= ~a21~0 1) .cse0 .cse1) (and (<= 6 ~a16~0) .cse1) (<= ~a16~0 4) (not (= ~a8~0 13)))) [2021-08-25 20:39:58,048 INFO L857 garLoopResultBuilder]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,048 INFO L857 garLoopResultBuilder]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,048 INFO L857 garLoopResultBuilder]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,048 INFO L857 garLoopResultBuilder]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,048 INFO L857 garLoopResultBuilder]: For program point L419-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,048 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-08-25 20:39:58,048 INFO L857 garLoopResultBuilder]: For program point L552(line 552) no Hoare annotation was computed. [2021-08-25 20:39:58,048 INFO L857 garLoopResultBuilder]: For program point L519(line 519) no Hoare annotation was computed. [2021-08-25 20:39:58,048 INFO L857 garLoopResultBuilder]: For program point L486(line 486) no Hoare annotation was computed. [2021-08-25 20:39:58,048 INFO L857 garLoopResultBuilder]: For program point L453(line 453) no Hoare annotation was computed. [2021-08-25 20:39:58,048 INFO L857 garLoopResultBuilder]: For program point L420(line 420) no Hoare annotation was computed. [2021-08-25 20:39:58,048 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-08-25 20:39:58,049 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-08-25 20:39:58,049 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-08-25 20:39:58,049 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-08-25 20:39:58,049 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-08-25 20:39:58,049 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-08-25 20:39:58,049 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-25 20:39:58,049 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-08-25 20:39:58,049 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-08-25 20:39:58,049 INFO L857 garLoopResultBuilder]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,049 INFO L857 garLoopResultBuilder]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,049 INFO L857 garLoopResultBuilder]: For program point L488-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,049 INFO L857 garLoopResultBuilder]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,049 INFO L857 garLoopResultBuilder]: For program point L422-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L555(line 555) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L522(line 522) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L489(line 489) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L456(line 456) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L423(line 423) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,050 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L425-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L558(line 558) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L525(line 525) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L492(line 492) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L459(line 459) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L426(line 426) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-08-25 20:39:58,051 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-08-25 20:39:58,052 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-08-25 20:39:58,052 INFO L857 garLoopResultBuilder]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,052 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a17~0 1)) (.cse1 (= ~a20~0 1))) (or (and (<= ~a21~0 0) .cse0 .cse1) (and (<= ~a7~0 0) (= ~a12~0 8) (= ~a21~0 1) .cse0 .cse1) (and (<= 6 ~a16~0) .cse1) (<= ~a16~0 4) (not (= ~a8~0 13)))) [2021-08-25 20:39:58,052 INFO L857 garLoopResultBuilder]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,052 INFO L857 garLoopResultBuilder]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,052 INFO L857 garLoopResultBuilder]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,052 INFO L857 garLoopResultBuilder]: For program point L428-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,052 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-08-25 20:39:58,052 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-25 20:39:58,052 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 558) no Hoare annotation was computed. [2021-08-25 20:39:58,052 INFO L857 garLoopResultBuilder]: For program point L561(line 561) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L528(line 528) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L495(line 495) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L462(line 462) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L429(line 429) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L431-1(lines 40 585) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-08-25 20:39:58,053 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-08-25 20:39:58,054 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-08-25 20:39:58,054 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-08-25 20:39:58,065 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 20:39:58,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 08:39:58 BoogieIcfgContainer [2021-08-25 20:39:58,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 20:39:58,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 20:39:58,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 20:39:58,088 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 20:39:58,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:39:43" (3/4) ... [2021-08-25 20:39:58,091 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-25 20:39:58,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-25 20:39:58,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-25 20:39:58,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-25 20:39:58,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-25 20:39:58,202 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 20:39:58,202 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 20:39:58,204 INFO L168 Benchmark]: Toolchain (without parser) took 16202.72 ms. Allocated memory was 60.8 MB in the beginning and 249.6 MB in the end (delta: 188.7 MB). Free memory was 38.0 MB in the beginning and 215.2 MB in the end (delta: -177.1 MB). Peak memory consumption was 150.4 MB. Max. memory is 16.1 GB. [2021-08-25 20:39:58,204 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 42.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 20:39:58,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 506.19 ms. Allocated memory is still 60.8 MB. Free memory was 37.9 MB in the beginning and 29.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-25 20:39:58,205 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.39 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 29.4 MB in the beginning and 57.0 MB in the end (delta: -27.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-25 20:39:58,205 INFO L168 Benchmark]: Boogie Preprocessor took 71.44 ms. Allocated memory is still 77.6 MB. Free memory was 57.0 MB in the beginning and 52.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-25 20:39:58,205 INFO L168 Benchmark]: RCFGBuilder took 1294.74 ms. Allocated memory is still 77.6 MB. Free memory was 52.7 MB in the beginning and 40.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2021-08-25 20:39:58,205 INFO L168 Benchmark]: TraceAbstraction took 14123.89 ms. Allocated memory was 77.6 MB in the beginning and 249.6 MB in the end (delta: 172.0 MB). Free memory was 39.9 MB in the beginning and 83.1 MB in the end (delta: -43.1 MB). Peak memory consumption was 128.8 MB. Max. memory is 16.1 GB. [2021-08-25 20:39:58,206 INFO L168 Benchmark]: Witness Printer took 114.27 ms. Allocated memory is still 249.6 MB. Free memory was 83.1 MB in the beginning and 215.2 MB in the end (delta: -132.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-25 20:39:58,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 42.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 506.19 ms. Allocated memory is still 60.8 MB. Free memory was 37.9 MB in the beginning and 29.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.39 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 29.4 MB in the beginning and 57.0 MB in the end (delta: -27.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.44 ms. Allocated memory is still 77.6 MB. Free memory was 57.0 MB in the beginning and 52.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1294.74 ms. Allocated memory is still 77.6 MB. Free memory was 52.7 MB in the beginning and 40.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14123.89 ms. Allocated memory was 77.6 MB in the beginning and 249.6 MB in the end (delta: 172.0 MB). Free memory was 39.9 MB in the beginning and 83.1 MB in the end (delta: -43.1 MB). Peak memory consumption was 128.8 MB. Max. memory is 16.1 GB. * Witness Printer took 114.27 ms. Allocated memory is still 249.6 MB. Free memory was 83.1 MB in the beginning and 215.2 MB in the end (delta: -132.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 558]: 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 1 procedures, 198 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14037.5ms, OverallIterations: 9, TraceHistogramMax: 6, EmptinessCheckTime: 46.8ms, AutomataDifference: 7480.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 230.1ms, InitialAbstractionConstructionTime: 13.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 626 SDtfs, 1571 SDslu, 75 SDs, 0 SdLazy, 4030 SolverSat, 713 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5085.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 606 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 276.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2493occurred in iteration=8, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 235.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 917 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 66 NumberOfFragments, 83 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2256 FormulaSimplificationTreeSizeReduction, 32.1ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 170 FormulaSimplificationTreeSizeReductionInter, 191.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 157.6ms SsaConstructionTime, 418.4ms SatisfiabilityAnalysisTime, 4069.8ms InterpolantComputationTime, 2227 NumberOfCodeBlocks, 2227 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2215 ConstructedInterpolants, 0 QuantifiedInterpolants, 10099 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1040 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 1079/1154 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: 593]: Loop Invariant Derived loop invariant: (((((a21 <= 0 && a17 == 1) && a20 == 1) || ((((a7 <= 0 && a12 == 8) && a21 == 1) && a17 == 1) && a20 == 1)) || (6 <= a16 && a20 == 1)) || a16 <= 4) || !(a8 == 13) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((a21 <= 0 && a17 == 1) && a20 == 1) || ((((a7 <= 0 && a12 == 8) && a21 == 1) && a17 == 1) && a20 == 1)) || (6 <= a16 && a20 == 1)) || a16 <= 4) || !(a8 == 13) RESULT: Ultimate proved your program to be correct! [2021-08-25 20:39:58,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...